ARIA Studio + ARIA AI Companion

User Manual

Version 1.0.0 Build 630 · January 2026

Contact Altitude at:

Website: https://altitude.audio

Email: contact@altitude.audio

Discord Server: https://discord.gg/9yb7hcEsmG

Setup Tutorials: https://altitude.audio/tutorials

Quick Start

Try Demo Mode: ARIA Studio includes a fully-featured Demo Mode that lets you explore the application without a serial number. Launch ARIA Studio and select "Demo Mode" to get started immediately.

Purchase: To unlock all features, purchase ARIA Studio at https://altitude.audio. Your serial number will be emailed to you and will also appear in ARIA AI when you log in.

Quick Start with ARIA AI Companion App

  1. Download and Install ARIA AI: Download ARIA AI's installer package for macOS or Windows from https://altitude.audio/aria-ai.


  2. Sign in or create an account: Log in to ARIA AI with your Altitude Audio credentials (same as for the website).

  3. Download and Install ARIA Studio: Use the download link in ARIA AI to get the latest version of ARIA Studio. Complete the installation process for all components, including the ARIA-Audio-VAD Virtual Audio Driver on macOS. On Windows, install a third-party VAD such as VB-Cable.


  4. Authorize ARIA Studio: If you've purchased ARIA Studio, your serial number will appear in ARIA AI. Copy it, open ARIA Studio, paste it into the verification prompt, and submit.

  5. Take or Sync Your Hearing Tests:

    • FullScale Desktop App: Take our hearing test on macOS or Windows with 48 test variants. Use the "TO ARIA" button to send results directly to ARIA Studio.
    • FullScale Mobile App: Take our hearing test on iOS or Android with 24 test variants. Sync results via ARIA AI.
    • ARIA AI Sync: Go to the SYNC TESTS view in ARIA AI and press the button to send your test results to ARIA Studio.

  6. Generate Startup Presets in ARIA AI: Go to the PRESET GENERATOR view in ARIA AI and use any or all of the four methods to generate personalized presets. Interact with the AI agent to generate some as well.


  7. Audio Routing in ARIA Studio: Set up your input and output audio devices in ARIA Studio's AUDIO view. Set the INPUT to the OUTPUT of your VAD, and set ARIA's OUTPUT to your speakers, DAC, or interface. Turn audio streaming on!

  8. Load a Personalized Preset and Listen: Load any one of the personalized presets generated in step 6, play music, and start to listen.

    • Your new presets are located at: Presets/Full/User/AUTO/

NOTE: See the Audio Routing to ARIA section for sample implementations on macOS and Windows using Virtual Audio Devices (VAD).

ARIA AI Companion App

ARIA Studio is best utilized with the ARIA AI companion app. This application allows you to:

  1. Create an account and/or log in.

  2. View your serial number (after purchase).

  3. Download the latest version of ARIA Studio.

  4. Access the FullScale hearing test on iOS, Android, macOS, and Windows.

  5. Sync your hearing tests directly with ARIA Studio via online sync.

  6. Create personalized presets with rule-based logic or AI-assisted construction.

  7. Ask a specialized AI agent questions about ARIA Studio usage and support.

  8. Modify your account settings.

ARIA AI Installation Overview

ARIA AI installation package includes the standalone application, ARIA AI, for both macOS and Windows platforms. Download the appropriate version for your machine from https://altitude.audio/aria-ai and complete the install process. Once logged in you will be able to download ARIA Studio directly from the application.

ARIA AI Views

ARIA AI is broken into the following views with varied functions.

1. Login & Signup Views

Used to login to the application or create a new Altitude Audio account and login.

2. Home View

Used to view your ARIA Studio serial number (after purchase), download ARIA Studio, and access the FullScale Hearing Test on all platforms.

3. Sync Tests View

Used to directly import your hearing tests into ARIA Studio via our online sync process.

4. Preset Generator View

Used to automate personalized preset creation through a variety of rule-based preset construction methods. These include:

  • Get Started: This creates the most basic personalized preset using wideband (single band) multiband editors. Think of it as setting every parameter to 50%.
  • Randomize: This applies a mix of rule-based heuristics with sub-preset randomization to create personalized presets for you one at a time.
  • Batch Presets: This creates a batch of 5 randomized presets.
  • AI Generated Presets from Description: Tell the AI Agent what type of preset you would like made or your desired sound qualities and it will construct a preset for you using very basic filter analysis and rules.
  • Profile Mode: Used to select the newest hearing profile in your library or a random hearing profile from your library.

5. ARIA AI View

An AI Agent specialized to answer questions about ARIA Studio. This agent has access to a library of reference material we have constructed for this purpose, enabling the agent to answer questions directly.

6. Account View

Used to complete several basic account functions, including:

  • Copy your ARIA Studio serial number (after purchase)
  • Turn two-factor authentication on or off
  • Enable or disable email communication from Altitude
  • Log out

7. Beta View

Used to access beta features and serial numbers for users enrolled in our beta program.

Note: If you are not enrolled in the beta program, the BETA view will display your production serial number. An update to ARIA AI is forthcoming that will improve this experience.

ARIA AI Usage Notes

  1. Auto Logout: ARIA AI is designed with security in mind and for this reason will log you out every 7 days.

  2. AI Usage Limitations: ARIA AI will apply monthly and lifetime credit limits. As we are not monetizing this feature, we've set the threshold at a level we hope will allow you to experiment with the feature and limit our expense in providing it.

FullScale Hearing Test

The FullScale Hearing Test is Altitude Audio's comprehensive hearing assessment application, available on macOS, Windows, iOS, and Android. Your hearing test results are used by ARIA Studio to create personalized audio corrections tailored to your unique hearing profile.

Accessing the Hearing Test

Visit our website to download FullScale for your platform:

https://altitude.audio/fullscale-hearing-test

  • macOS & Windows: Download the desktop application directly from the website.
  • iOS: Download from the App Store link on the website.
  • Android: Download from the Google Play Store link on the website.

FullScale Desktop App Views

The FullScale desktop application (macOS & Windows) includes the following views:

1. Login & Signup Views

Used to log in to the application or create a new Altitude Audio account. Your account syncs across FullScale, ARIA AI, and ARIA Studio.

  • Login: Enter your email and password to access your account.
  • Create Account: Sign up with your email to create a new Altitude Audio account.
  • Offline Mode: Test without an account (results stored locally only).

2. Home View

The main hub displaying your completed hearing tests and providing access to start new tests.

  • Test Cards: View all your completed and in-progress hearing tests.
  • TO ARIA Button: Click this button on any test card to send that test's results directly to ARIA Studio.
  • New Test: Start a new hearing test from this view.

3. Results View

Displayed after completing a hearing test, showing your results and export options.

  • Audiogram: Visual representation of your hearing thresholds.
  • dB HL Table: Detailed threshold values by frequency.
  • TO ARIA Button: Send your results directly to ARIA Studio.
  • Return Home: Go back to the Home View to see all your tests.

Syncing Results to ARIA Studio

FullScale provides a seamless "TO ARIA" button to send your hearing test results directly to ARIA Studio:

  1. After Testing: When you complete a test, the Results View displays a "TO ARIA" button. Click it to send your results immediately.

  2. From Home View: Each test card on the Home View has a "TO ARIA" button. Use this to sync any previous test at any time.

  3. Requirements: ARIA Studio must be installed on the same computer. The results are saved to ARIA Studio's hearing profile directory.

Calibrated Devices

For the most accurate results, use a calibrated headphone or earbud. FullScale supports over 5,500 headphone models through integration with the AutoEQ database.

Test Options

  • Tone Type: Choose between Pure tones (steady) or Pulsed tones (intermittent) based on your preference.
  • Enhanced Calibration: For users with sensitive hearing, Enhanced mode provides a gentler testing experience with reduced maximum output levels.
  • Frequency Selection: Multiple psychoacoustic models (Full, Part 1, Bark, ERB, Part 2) offer different frequency coverage options.

Extended Hearing Report

FullScale offers an optional Extended Hearing Report—a detailed PDF analysis of your hearing test results with professional-grade insights. This report is available for purchase through:

  • FullScale Desktop/Mobile App: Access the report purchase option directly from your test results.

The extended report provides deeper analysis beyond the basic results needed for ARIA Studio, making it valuable for users who want comprehensive documentation of their hearing profile.

Sending Results to ARIA Studio (All Platforms)

After completing a hearing test, send your results to ARIA Studio using one of these methods:

  1. TO ARIA Button (Desktop - Recommended): Click the "TO ARIA" button in FullScale's Results View or Home View to send results directly to ARIA Studio.
  2. ARIA AI Sync: Use the SYNC TESTS view in ARIA AI to sync all your tests from any platform (iOS, Android, macOS, Windows).
  3. Manual Import: Email results to yourself and copy the .csv file to the hearing test pathway.

Note: Using the FullScale desktop app or ARIA AI is recommended for the best experience. These methods provide seamless integration and automatic syncing.

ARIA Studio Installation and Resource Locations

Installation Overview

ARIA's installation package includes the standalone application, ARIA Studio, and plugin formats for both macOS and Windows platforms:

macOS:

  • ARIA Studio Standalone Application
  • ARIA Studio VST3 Plugin
  • ARIA Studio AUv2 Plugin
  • ARIA Studio Library & Resources
  • ARIA-Audio-VAD Virtual Audio Device

Windows:

  • ARIA Studio Standalone Application
  • ARIA Studio VST3 Plugin
  • ARIA Studio CLAP Plugin
  • ARIA Studio Library & Resources

For Windows users, a VAD is not included but can be obtained separately; popular choices like VB-Cable's HiFi Cable & ASIO Bridge are readily available.

Installation Paths

  • macOS: Installed files can be accessed at ~/Music/altitude/

  • Windows: Installed files can be accessed at C:\ProgramData\Altitude\

Further details on authorizing ARIA, routing audio, and importing hearing test results are provided in subsequent sections.

Authorizing ARIA

Upon installing ARIA on your computer, you can authorize it using the license serial number provided at the time of purchase. Navigate to the Authorization view (click "ARIA Studio" in the top left corner), copy and paste this serial number into the authorization field, click 'verify', and then navigate to ARIA's AUDIO SETTINGS view.

Demo Mode: If you haven't purchased yet, select "Demo Mode" to explore ARIA Studio's full feature set. Some features may be limited in demo mode.

Support

If you encounter any issues during authorization, please reach out to Altitude Support at Contact@Altitude.Audio for assistance.

ARIA Studio Use Recommendations | Workarounds

  1. Increase drive at higher filter levels to make up lost volume.

  2. Select Limiter presets based on the max amount of correction applied in the top graph. For example, if the y-axis shows -5dB of correction, select presets from the 4-7dBCorr folder.

  3. Increase CHAR and TRANS at higher compression levels.

  4. Increase TRANS if you hear distortion 1st, then try adjusting CHAR.

  5. The balance between CHAR + TRANS determines the limiters sound.

  6. Use SHARED mode in WASAPI or DirectSound for ease in Windows.

  7. Input a constant volume level into ARIA---turn off automatic normalization in your streaming application.

  8. Route audio directly to ARIA from your streaming application whenever possible.

  9. If you notice pervasive and incurable clipping, restart ARIA or replace the VST3 instance.

  10. Automatic sample rate switching works on mac when using ARIA VST3 in Reaper and Qobuz desktop application. But, not with Roon.

  11. Double click the audio output meters if you see NaN and no activity.

  12. Be patient when engaging HQ mode on 16K FIR sizes. If you hear no sound after 20 seconds, disengage HQ mode (sound should return), adjust CR UP slightly, retry HQ mode.

User Interface

Resizing the Interface

To adjust the size of ARIA's window, drag the lower right corner to your desired dimensions.

Navigating the Interface

ARIA's user interface is divided into several distinct views, each designed for specific functions. To switch between these views, navigate with the left side panel and the menu navigator in the bottom left corner.

Power Button (Bypass)

Turn the POWER button ON to enable DSP processing. When enabled it will be FILLED with color.

POWER ON:

Turn OFF the POWER button to BYPASS DSP processing, passing audio straight through ARA. The power button has NO FILL when disabled.

POWER OFF (BYPASSED):

This control is useful for A/B testing between processed and unprocessed audio, allowing you to directly hear the effect of ARIA's adjustments.

[Primary Views]{.smallcaps}

  • PRESET: This opens the preset navigation browser.

  • FILE: This opens the file browser for hearing profile and convolution file selection.

  • FILTER: This is your hub for making advanced adjustments to ARIA's filters.

  • LOUD: This is where you control the style and magnitude of limiting applied.

  • FX: Use this view to load external convolution files for purposes like room correction.

  • AUDIO: Set and modify ARIA's audio input and output devices along with other audio settings.

[Bottom Bar Views]{.smallcaps}

The bottom bar of the user interface serves as an additional parameter menu. Access different menus by clicking in the BOTTOM LEFT CORNER of the interface. Menus available and their function include:

  • HELP: Display Tooltips in the bottom bar.

  • INFO: Display build and version information.

  • UI: Make global UI changes to language, theme, and scale**.**

  • FONT: Change the font size and type used**.**

  • EDIT COLORS: Change the color of any UI component individually.

  • GLOBAL COLORS: Change the interface's global color theme all at once**.**

  • PREF: Displays CPU usage.

  • PARAM LOCK: Displays, sets, resets, and toggles lock status for individual parameters.

  • AUDIO IO: Displays the application's AUDIO settings**.**

  • MESSAGE: Displays important messages**.**

  • PRESET: Access a consolidated preset navigation browser for system and sub presets.

  • FILE: Access a consolidated file browser for hearing profiles and convolution files**.**

Side Panel

The SIDE PANEL is how you navigate through ARIA's main views. It also contains key parameters you may want to tune from song to song, namely CR UP and DRIVE. Access the AUDIO SETTINGS view with the AUDIO button at the bottom of the view and turn AUDIO STREAMING ON with the power button. Access the bottom bar menu selector in the lower left corner of the UI.

The SIDE PANEL VIEWS include:

  • PRESET: Navigate through full presets and sub-presets. Full presets change the entire plugin state, while sub-presets apply to specific parameter subsets, allowing for modular customization of your sound.

  • FILE: Access and manage hearing profiles and convolution files. This view provides a structured browser to import, select, and load different audio processing profiles based on your needs.

  • FILTER: Configure your personalized hearing correction filters. This view displays your hearing profile graphs, provides multi-band editors for frequency-specific adjustments, and offers global control parameters for fine-tuning your sound.

  • LOUD: Control ARIA's dynamics processing with precision. Adjust limiter parameters like DRIVE, CHARACTER, and TRANSIENTS, manage input/output gain, and monitor audio levels through comprehensive metering displays.

  • FX: Access ARIA's post-DSP convolution engines for spatial enhancement. Load impulse response files for room correction, headphone equalization, or reverberation effects with support for one, two, and four-channel configurations.

  • CR UP: Increase the global correction level in dB to elevate the overall hearing correction. This is a primary control for adjusting the intensity of your personalized hearing profile.

  • DRIVE: Control the input gain to ARIA's limiter, determining how hard the audio hits the dynamics processing. Higher values create more dynamic compression and perceived loudness.

  • IN GAIN: Adjust the input gain of the stereo signal in dB prior to any processing. Use this to optimize signal levels entering ARIA's processing chain.

  • OUT GAIN: Control the output gain of the stereo signal in dB after all processing is complete. Use this for final volume adjustment without affecting internal processing.

  • AUDIO: Configure audio device settings, sample rates, and buffer sizes. This view allows you to select input/output devices, manage audio streaming, and optimize performance for your specific hardware setup.

Preset View The PRESET View may be accessed from the PRESET browser in the top middle of the UI or with the PRESET view button on the left side panel. Once opened you may navigate through full presets and sub-presets. Full presets change the whole plugin state. Sub-presets apply only to a subset of parameters.

File View The FILE View may be accessed from the FILE view button on the left side panel or by the FILE browser button in the top middle of the PROFILE & FILTER views. Use this view to navigate and load different hearing profiles or convolution files.

Filter View The FILTER view of ARIA is where you setup your sound personalization filters. The equalization part. The view has 3 sections.

Section A: The topmost section plots your test results, hearing profile, and derived correction filters' responses, which show the detailed changes ARIA is making.

Section B: The middle section contains Multi-Band Editor(s) (MBE), which are used to make frequency specific adjustments to how your hearing profile is applied by ARIA. Think of these like your EQ controls.

Section C: The bottom panel contains global parameters relating to all aspects of ARIA, including input, output and gain reduction meters.[
]{.underline}

Section A---Hearing Profiles and Graphing

  1. GRAPH DROPDOWN [RAW]: Select the data graphed from the following options. FLT is the main graph you will use when tuning ARIA.

  • RAW USER PROFILE: View your imported hearing test results alongside the reference curve**.**

  • HEARING LOSS PROFILE: Displays the total hearing level of your profile based on the raw results from your hearing test.

  • HEARING LOSS CORR): Shows the hearing level of your profile adjusted according to the current operational parameters in ARIA.

  • POST STEREO: Presents the total correction values derived directly from your raw hearing test results.

  • TOTAL CORRECTION: Displays the total correction from TC but limited by the maximum correction dB parameter set in ARIA.

  • RES: View the correction as applied in aria after accounting for all parameter settings.

  • SMOOTHED: View ARIA's smoothed target response curve, considering all current parameter settings.

  • RESULT FILTER: View the response of ARIA's FIR filter as it is currently configured, demonstrating how the filter modifies audio output.

  1. S/D (Single / Dual Profile): Toggle between Single and Dual/Blended hearing profile modes. Single mode uses only one hearing profile, while Dual mode allows for blending two profiles.

PROFILE 1 / PROFILE 2: Displays the hearing profile data for slot 1 or slot 2. Use this view to examine the detailed attributes of the loaded hearing profiles.

  1. FILE BROWSER: Open a file dialog to load specific hearing profiles into ARIA, allowing you to switch between multiple profiles as needed.

  2. Hearing Sub-Profile [full/part1/bark/erb/part2]: Choose from up to five psychoacoustic models to define your hearing profile based on a complete hearing test. Note that tests concluded early may offer limited model options.

  3. BLEND: Adjust this setting to blend two hearing profiles into a single hybrid profile. This feature averages the characteristics of both profiles for a balanced output.

  4. LR (Left/Right Toggle): This toggle allows you to select which data is displayed on the Hearing Profile (HP) graph---either from the left ear, the right ear, or both.

  5. ALL (Overall Data Toggle): Use this toggle to switch the data displayed on the HP graph between your individual test results and the standard reference curve.

Frequency Warping: Adjust the frequency scaling on graphical displays using the scroll wheel while hovering over the graph's bottom left corner. This adjustment is particularly useful for enhancing the visibility of specific frequency regions, whether low or high, facilitating a more detailed analysis.

Section B---Multi-Band Editors (MBE)

ARIA's Multi-Band Editors (MBE) allow for precise, frequency-specific adjustments across various global parameters within ARIA's signal chain. Each editor enables unique modifications that can significantly alter the sound produced by ARIA. Although these editors have diverse functions, they all share a consistent user interface with up to 6 bands.

Operating the Multi-Band Editors:

  • Adjust Band Levels: To modify a band's level, click, hold, and drag the band's horizontal edge vertically.

  • Reposition Bands: To move a band along the frequency axis, click, hold, and drag the vertical separator at the band's edge.

  • Add a Band: Double-click at the desired frequency location on the editor to introduce a new band.

  • Remove a Band: To remove a band, hold down the Control key and double-click on the band.

  • Adjust Band Curvature: Alter the curvature of the bands by scrolling with your mouse wheel while hovering over an intersection point between bands.

  • Frequency Warp Adjustment: Modify the frequency spacing on the X-axis by scrolling with your mouse wheel while hovering over the MBE's lower left corner. This activates ARIA's frequency warp feature for expanded or condensed frequency views.

Multi-Band Editor Functions and Controls

  1. MBE SELECTOR DROPDOWN [REF]: Select the active MBE from a dropdown menu of available parameters including:

  • REFERENCE: Adjust the global reference curve using this multi-band editor. You can raise or flatten the curve as needed for overall sound calibration.

  • PROFILE BLEND: Multi-band editor for blending dual hearing profiles. Customize how two profiles combine to create a unified auditory experience.

  • M/S MID: Dedicated to the middle signal content in Mid/Sides mode, this editor allows you to refine the middle correction profile without altering the global correction response

  • M/S SIDE: Adjusts the sides signal content in Mid/Sides mode, fine-tuning the sides correction profile independently of the global correction.

  • LR-CORRECTION AMOUNT: For Combined Left-Right mode, this multi-band editor customizes the parameters for your combined LR correction profile.

  • L GAIN: Tailors the correction response curve specifically for the left ear in LR-Separate mode, either raising or flattening it as needed.

  • R GAIN: Similar to L-GAIN but for the right channel, allowing adjustments to the correction response curve for the right ear in LR-Separate mode.

  • CORRECTION AMOUNT: Global correction multi-band editor used to modify the overall correction response curve.

  1. FLT SIZE: Select from a dropdown menu of FIR filter sizes to smooth filter resolution.

  2. STD / HQ MODE: Switch between Standard and High-Quality (Minimum Phase) FIR filters. Note: HQ mode activation may delay sound output for 2-10 seconds depending on FIR filter size.

  3. OPERATING MODE DROPDOWN [LR-S]: Select from 3 operating modes to modify the sound and imaging. Choose from Mid/Sides, Left-Right Combined, and Left-Right Separate.

  • MS (Mid/Sides Mode): Activate Mid/Sides processing mode, suitable for both speakers and headphones, enhancing the spatial quality of audio.

  • LR-C (Left + Right Combined Mode): Activate Combined Left-Right processing mode, ideal for open-air listening environments and compatible with headphone use as well.

  • LR-S (Left / Right Separate Mode): Switch to Separate Left & Right processing mode, designed for enhanced stereo imaging in headphone listening and speaker setups.

  1. MULTI-BAND EDITOR: The main MBE editor.

Additional Controls

  • MBE Vertical Separators: Modify a band's frequency range by dragging the vertical separators horizontally to expand or narrow its scope.

  • MBE Horizontal Bar: Adjust the band's assigned parameter level from 0 to 100 by moving the horizontal bar vertically.

  • Smooth MBE Curve Hover Point: Use the scroll wheel to smooth transitions between bands, enhancing the gradient of the multi-band editor's curve.

Section C---Control Panel Settings

  1. CR UP (Correction Up): Increase the global correction in dB to elevate the overall correction level.

  2. CR DOWN (Correction Down): Apply downward correction in dB for outliers below the reference curve.

  3. MAX COR DB (Maximum Correction): Set the maximum correction limit in dB at any frequency.

  4. MAX ST DB (Maximum Stereo Delta): Define the maximum allowable difference in dB between left and right ear hearing levels.

  5. MONO / MS BLEND: Adjust between stereo processing and mono processing, including channel-inverted processing options in LR-Separate and LR-Combined modes. In Mid/Sides mode the parameter increases width with values above 0.0 and increases focus with values below 0.0.

  6. SMOOTH: Smooths the target filter response.

  7. OUTLIERS: Removes the greatest outlier data point(s) from hearing profile derivation.

  8. RESCALE: Controls the frequency warp for the multi-band editor and hearing profile graph x-axis display. Adjusts how frequencies are distributed across the visual representation.

LOUD View

The LOUD view contains gain reduction parameters for ARIA's limiter(s) and/or compressor(s). Input and output gain are also present. As are input, output, and gain reduction meters.

  • DRIVE: Increase the gain at the entry point of dynamics processing to intensify the effect.

  • CHAR (Character): Fine-tune the character of dynamics modules, balancing gain reduction to prevent distortion.

  • TRANS (Transients): Modify the transient response of dynamics processing to maintain clarity under dynamic changes.

  • CH LINK (Channel Link): Adjust the proportion of shared dynamics processing between fully independent left and right channels and fully combined.

  • AUTO ENV: Engages the dynamics processing's automatic envelop (attack and release) feature. Works better with longer CHAR and TRANS values.

  • IN GAIN: Adjust the input gain of the stereo signal in dB prior to processing.

  • OUT GAIN: Adjust the output gain of the stereo signal in dB after all processing is complete.

Metering and Monitoring:

  • INPUT METER: Displays input audio signal volume with peak and RMS readings.

  • OUTPUT METER: Shows output audio signal volume with peak and RMS readings.

  • DYNAMICS METER: Monitors dynamic gain reduction with peak and RMS indicators.

  • PEAK READINGS: Displays peak values for volume and dynamics meters**.**

  • RMS READINGS: Shows RMS values for volume and dynamics meters.

Hearing Profile System

Profile Management

ARIA's hearing profile browser enables you to manage and load your hearing test results. Add new hearing test results or choose from characteristic profiles provided. You can load these profiles into one of two slots, which can then be blended to create a hybrid profile tailored to your needs. Importing your hearing test results can be performed both offline and online, offering flexibility in how and where you access your data.

Importing Hearing Test Results into ARIA

There are three ways to import your hearing test results into ARIA Studio:

The easiest way to import hearing tests is using the FullScale Hearing Test desktop app:

  1. Complete your hearing test in FullScale on macOS or Windows.
  2. Click the "TO ARIA" button in the results view.
  3. Your hearing test results will be automatically sent to ARIA Studio.
  1. Open ARIA AI and log in with your Altitude Audio credentials.
  2. Navigate to the SYNC TESTS view.
  3. Press the sync button to send all your hearing test results to ARIA Studio.

Method 3: Manual Import (Offline)

Tip: For the best experience, we recommend using the FullScale desktop app or ARIA AI instead of manual import. These methods provide automatic syncing of your results.

To import your hearing test results manually:

  1. Obtain the .csv File:

    • Open FullScale MOBILE on any iOS or Android and navigate to a completed hearing test and PURCHASE the extended reporting option.
    • Select "Email report" to have the results emailed to you as a .csv file.

  2. Prepare the File for Import:

    • Download the .csv file from your email.
    • Rename the file to something descriptive that you will recognize easily.

  3. Copy the File to the Hearing Test Pathway:

macOS Hearing Test Data Pathway

~/Music/altitude/shared/lib/profile/User

~/Music/altitude/shared/lib/profile/Server

Windows Hearing Test Data Pathway

C:\ProgramData\Altitude\shared\lib\profile\User

C:\ProgramData\Altitude\shared\lib\profile\Server

Blended & Sub-Hearing Profiles

Use ARIA's blended hearing profile functionality to mix two profiles into one, hybrid profile. Frequency specific averaging of profile sections may be completed with the multi-band editor, discussed in subsequent sections.

Single Hearing Profile Mode: By default, ARIA operates in SINGLE profile mode, utilizing only the profile loaded into slot 1. In this mode, the blending of hearing profiles is disabled, focusing on the adjustments from a single source.

Dual Hearing Profile Mode: Activate DUAL hearing profile mode by selecting the "D" button. This mode enables the blending of two distinct profiles loaded into slots 1 and 2. Adjust the blend using the 'blend hearing profiles' parameter to find the perfect balance tailored to your auditory preferences.

Use Cases for Blended Hearing Profiles

Blending hearing profiles allows you to combine favored characteristics of multiple profiles to achieve greater sonic performance. One common use is to blend sub-hearing profiles from a single test together, which is another form of smoothing. Another is blending your own hearing profile with a characteristic (factory) hearing profile to achieve different tonality.

Hearing Sub-Profiles

When you complete the FullScale Hearing Test protocol, your results include multiple hearing profiles. These profiles reflect different psychoacoustic models and can be accessed and managed within ARIA.

Accessing Sub-Profiles

To view and select from available hearing sub-profiles, navigate to the sub-profile menu. Here, you can choose from up to five (5) different options, provided your hearing test was completed in full. Note that if the test was concluded early, some sub-profiles might not be available, as the completion of the entire test battery is necessary to generate each distinct sub-profile.

Within the sub-profile menu, you can also switch the psychoacoustic model used to derive each hearing profile. A sub-profile may be selected for both hearing profiles when in dual hearing profile mode.

Sub-profile Psychoacoustic Models

Hearing is a complex phenomenon, and its understanding varies based on different psychoacoustic models derived from scientific research. ARIA leverages this diversity by allowing you to select from multiple psychoacoustic models through sub-profiles based on your comprehensive hearing test results. This feature ensures that ARIA can be finely tuned to reflect the nuances of how you perceive sound.

Selecting Sub-profiles

Each sub-profile in ARIA represents a different model of hearing:

  • Full: Incorporates all frequencies tested, providing a highly granular view of your hearing across the spectrum.

  • Part 1: Based on medical/traditional scales commonly used in clinical settings.

  • Bark: Utilizes the Bark scale, which is structured around how the human auditory system perceives sound.

  • ERB: Uses the Equivalent Rectangular Bandwidth (ERB) scale, focusing on critical bandwidths in auditory perception.

  • Part 2: Represents additional testing from the FullScale Hearing Test Part 2, offering a differing approach to low frequency regions.

Preset Management System

ARIA's preset management system provides a versatile framework for handling presets efficiently. This system enables you to load, save, and delete presets easily.

Modular Structure: The system is designed with a modular structure, which allows for precise management of presets either for the entire application or for specific individual modules. For instance, you can manage presets specifically for components like the multiband editor.

Saving Presets and Sub-Presets: ARIA's preset management system follows a predetermined folder structure for saving your presets. It is very important that you save your presets in the correct folder for easy retrieval and function.

As an example, Full ARIA presets, which save every parameter into master presets, should be saved in the Full pathway. Limiter Sub-presets, which store only limiter related parameter values, should be saved in the Limiter pathway.

Sub-Presets: Sub-presets are specialized settings that only control the module(s) to which they are assigned. This allows for detailed customization of individual aspects of ARIA without altering the overall configuration.

Sub-Preset Use: Sub-presets in ARIA are incredibly useful for making comprehensive yet isolated adjustments. For instance, you can modify all settings within the Multi-Band Editor (MBE) without impacting other aspects of ARIA such as the dynamics, convolution, loaded hearing profiles, or overall control parameters.

This functionality enables you to implement broad changes across the MBE quickly while maintaining consistency in other processing areas, eliminating the need for individual adjustments. Furthermore, you can chain together various sub-presets, allowing you to merge your preferred settings into one ultimate personalized listening preset.

Sub-Preset Types & Parameters: ARIA's sub-presets store the following parameters:

Global Presets:

  1. Full: Use this pathway to save presets storing the full state of ARIA, excluding HQ filter mode.

  2. Base: Use this pathway to save presets storing global filter parameters including correction up and down, maximum correction and step values, outlier threshold, stereo mode and mono values, smoothness, and FIR filter size.

  3. Profiles: Use this pathway to save presets storing the hearing profiles as currently engaged in ARIA's Hearing Profile System.

Sub-Preset Parameters & Pathways:

  1. Limiter: Use this pathway to save presets storing ARIA's limiter parameters---DRIVE, CHAR, and TRANS.

  2. Convolution: Use this pathway to save presets storing all parameters used in ARIA's post-DSP convolution.

  3. REF EQ: Use this pathway to save presets storing values for the reference curve EQ/Multi-band Editor.

  4. HPB EQ: Use this pathway to save presets storing values for the hearing profile blend EQ/Multi-band Editor.

  5. MS-M EQ: Use this pathway to save presets storing values for the middle signal's EQ/Multi-band Editor, which is available for use in Mid/Sides (MS) Mode.

  6. MS-S EQ: Use this pathway to save presets storing values for the sides signal's EQ/Multi-band Editor, which is available for use in Mid/Sides (MS) Mode.

  7. MID-SIDE EQ: Use this pathway to save presets storing values for the middle & sides signals' EQ/Multi-band Editors, which is available for use in Mid/Sides (MS) Mode.

  8. LR EQ: Use this pathway to save presets storing values for the Left-Right Combined EQ/Multi-band Editor, which is available for Left-Right Combined (LR-C) Mode.

  9. LR-L EQ: Use this pathway to save presets storing values for the left channel's EQ/Multi-band Editor, which is available for use in Left-Right Separate (LR-S) Mode.

  10. LR-R EQ: Use this pathway to save presets storing values for the right channel's EQ/Multi-band Editor, which is available for use in Left-Right Separate (LR-S) Mode.

  11. CR EQ: Use this pathway to save presets storing values for ARIA's global correction EQ/Multi-band Editor.

  12. P-Lock: Parameter lock sub-preset used to store sets of parameters to remain locked while changing other settings. This prevents the locked parameters from changing.

  13. Color: Sub-presets for different UI themes and colors.

Parameter Lock

ARIA's Parameter Lock feature allows you to lock specific parameters, so they remain unchanged when loading different presets or sub-presets. This powerful functionality lets you preserve your favorite settings while freely experimenting with other parameters.

Accessing and Activating Parameter Lock:

  1. Navigate to the bottom bar of the user interface.

  2. Click on the menu navigator in the bottom left corner.

  3. Select "PARAM LOCK" from the available options.

  4. Turn on Parameter Lock globally from the PARAM LOCK bottom bar menu.

Locking Individual Parameters:

  1. On Mac: Hold Option + Click on any parameter you wish to lock.

  2. On Windows: Hold Alt + Click on any parameter you wish to lock.

The locked parameter will change color and appear dimmed, indicating it is now locked. Proceed to make changes to your presets or other parameters---the locked parameters will maintain their values.

Unlocking Parameters:

  1. Individual Unlock: Option + Click (Mac) or Alt + Click (Windows) on a locked parameter to unlock it.

  2. Reset All: Use the "RESET PARAM LOCK" button in the bottom menu to unlock all parameters at once.

  3. Global Disable: Turn OFF Global PARAM LOCK in the bottom menu to disable the parameter lock functionality entirely.

This feature is particularly useful when you've found certain aspects of your sound that you want to keep constant while exploring variations in other areas of ARIA's processing chain.

Practical Applications:

  • Preserve Your Sound: Lock your favorite EQ settings or correction amounts while experimenting with different limiter presets.

  • Mix and Match: Create hybrid configurations by locking certain parameters from one preset while loading others.

  • Workflow Efficiency: Lock your hearing profile settings while auditioning different dynamic processing presets.

  • Incremental Adjustments: Lock most parameters and only allow specific ones to change as you fine-tune your sound.

Syncing Multiple Computers

To sync hearing profiles, presets, and convolution files across multiple computers, use ARIA AI's online sync feature or manually copy files between machines.

Online Sync via ARIA AI: Log in to ARIA AI on each computer and use the SYNC TESTS view to sync your hearing test results across all your devices.

Manual File Transfer: Gather the files you intend to sync from the pathways listed below on your main machine. Copy them onto your target machine and move them into the same pathways. Relaunch ARIA.

macOS Pathways

  • Hearing Profiles: ~/Music/altitude/shared/lib/profile/User/Default

  • Convolution Files: ~/Music/altitude/shared/lib/wav/

  • Presets: ~/Music/altitude/product/ARIA/preset/full/

  • Sub-presets: ~/Music/altitude/product/ARIA/preset/sub/

Windows Pathways

  • Hearing Profiles: C:\ProgramData\Altitude\shared\lib\profile\User\Default

  • Convolution Files: C:\ProgramData\Altitude\shared\lib\wav\

  • Presets: C:\ProgramData\Altitude\product\ARIA\preset\full\

  • Sub-presets: C:\ProgramData\Altitude\product\ARIA\preset\sub\

FX Convolution View

The convolution view in ARIA provides access to four (4) post-DSP convolution engines designed to work with one, two, and four-channel stereo impulse response files. These four engines are ideal for applying convolution files included with ARIA's factory library or that you've created externally. These may be used for spatialization effects, room correction, headphone equalization, or even to add reverberation.

Each convolution engine includes two independent transform rows, allowing you to apply up to two IR transformation algorithms simultaneously. The available transforms are:

  • Invert – Spectral inversion for correction filters or creative effects
  • Diffuse – Randomized scattering for spacious, less defined sound
  • Tilt – Frequency-dependent gain slope (spectral tilt)
  • GDelay – Group delay manipulation for spatial effects and phase correction
  • HRTF – Binaural spatialization simulating head-related transfer functions

Each transform has eight parameters (P0–P7), with the last two (LF/HF) controlling the frequency range affected by the processing.

The FFT frequency response display shows the convolution file response for channel 1 only. This means that if you load a 4-channel true stereo IR file, only one of four channels is graphed.

Convolution File Sample Rates

Ideally, the audio signal sample rate at ARIA's input matches the sample rate of your convolution .wav files. By default, the factory IR files are sampled at 48,000 Hz. If your files have a different sample rate, they will be resampled to match the input rate.

Controls and Functionality for Convolution Files

Convolution parameters in ARIA are broken into global parameters, which apply equally to each convolution slot (P1..P4), and individual parameters, such as inversion, which apply to an individual convolution slot.

Global Convolution Controls:

  • MIX: Convolution wet/dry mix parameter per convolution slot (1..4).

  • FILE BROWSER: Access this feature to open a file dialog window, allowing you to select and load either two or four-channel stereo impulse response files (.wav) into ARIA.

  • File Details: Each convolution file loaded into ARIA is accompanied by detailed information to assist in your audio management:

    • Channel Mapping: Displays the configuration of channels within the file.

    • Sample Rate: Shows the frequency of sample processing per second.

    • Length: Indicates the total count of samples within the file.

    • Duration: Provides the length of the audio file in seconds.

  • Plot: Convolution file FFT response for channel 1 only. This means that only the first channel of multichannel .wav files loaded into ARIA is graphed at this time.

Convolution File Slots:

ARIA can manage up to four convolution files simultaneously, enhancing flexibility for comparative listening with these parameters:

  1. GLOBAL ON/OFF: Turn global convolution engines on and off, applying to all convolution slots.

  2. SLOT 1 ON/OFF: Click to load, activate, and access settings for Convolution File 1.

  3. SLOT 2 ON/OFF: Click to load, activate, and access settings for Convolution File 2.

  4. SLOT 3 ON/OFF: Click to load, activate, and access settings for Convolution File 3.

  5. SLOT 4 ON/OFF: Click to load, activate, and access settings for Convolution File 4.

Convolution Transforms:

Each convolution engine supports the ability to apply up to two IR transforms from the list of available algorithms documented in the Convolution Transforms section below. These transforms allow you to invert the impulse response, precisely control phase properties, apply smoothing, and more. This feature can be invaluable for tasks such as phase alignment, room correction, and creative sound design where nuanced control over the impulse response is required.

  • P1–P8: Each transform row provides parameters specific to the selected transform algorithm. See the Convolution Transforms section for detailed parameter descriptions.

  • Transform Selector: Use the drop-down menus to select up to two transforms to apply to the impulse response. Available transforms include Invert, Resample, Warp, Tilt, Diffuse, and Deconv.

Convolution Transforms

Note: The Convolution Transforms module is an experimental feature currently in development. Many new parameters and transforms have recently been added. Basic documentation follows below; more detailed descriptions will be provided in the next release.

ARIA's convolution module includes six IR transformation algorithms. Each transform can be assigned to the top or bottom parameter row independently. All transforms include LF (low-frequency cutoff) and HF (high-frequency cutoff) parameters to limit the frequency range affected by the processing.

Invert

The Invert transform performs spectral inversion of the impulse response, useful for creating correction filters or creative sound design effects.

Parameter Range
DEPTH 0 – 100
SMOOTH 0 – 100
LIMIT NOLIM – 100
REG OFF – -40
SCALE 0 – 100
PHASE 0% – 100M
LF OFF – 2.00K
HF 3.07K – 25.0K
  • DEPTH – Amount of inversion applied (0 = none, 100 = full inversion)
  • SMOOTH – Smoothing applied to the inverted spectrum to reduce artifacts
  • LIMIT – Maximum correction limit to prevent extreme gain values
  • REG – Regularization amount to prevent division by near-zero values
  • SCALE – Overall scaling of the inverted response
  • PHASE – Phase handling (0% = zero-phase, 100M = minimum phase)
  • LF/HF – Low and high frequency cutoff boundaries

Resample

The Resample transform applies time-stretching and compression to the impulse response using phase vocoder techniques.

Parameter Range
RATIO 0.06x – 16.00x
PV FQ 80.0 – 8.00K
WARP 0.50
SOFT 0.020 – 0.330
INTP LIN / CUB
PHASE CMPX / M+MP
LF OFF – 2.00K
HF OFF – 25.0K
  • RATIO – Time stretch/compress ratio (< 1 = compress, > 1 = stretch)
  • PV FQ – Phase vocoder frequency resolution
  • WARP – Time warping curve shape
  • SOFT – Transition softness for phase vocoder processing
  • INTP – Interpolation mode (LIN = linear, CUB = cubic)
  • PHASE – Phase mode (CMPX = complex, M+MP = magnitude + minimum phase)
  • LF/HF – Low and high frequency cutoff boundaries

Diffuse

The Diffuse transform adds randomized scattering to the impulse response, creating a more spacious and less defined sound character.

Parameter Range
AMOUNT 0 – 100
SMOOTH 1 – 33
SEED 0 – 999
STEREO 0 – 100
EARLY 0.0 – 50.0
MIX AUTO – 100
LF OFF – 2.00K
HF OFF – 25.0K
  • AMOUNT – Intensity of the diffusion effect (0 = none, 100 = maximum)
  • SMOOTH – Smoothing factor for the diffusion algorithm
  • SEED – Random seed value for reproducible diffusion patterns
  • STEREO – Stereo decorrelation amount between left and right channels
  • EARLY – Early reflection density control
  • MIX – Wet/dry mix (AUTO = automatic gain compensation)
  • LF/HF – Low and high frequency cutoff boundaries

Tilt

The Tilt transform applies a frequency-dependent gain slope to the IR, tilting the spectral balance toward lower or higher frequencies.

Parameter Range
DEPTH 0 – 100
PV FQ 80.0 – 8.00K
SLOPE -12.0 – +12.0
SOFT 0.020 – 1.000
SHAPE 0.50 – 2.00
PHASE CMPX / M+MP
LF OFF – 2.00K
HF OFF – 25.0K
  • DEPTH – Amount of tilt effect applied
  • PV FQ – Pivot frequency where tilt crosses unity gain
  • SLOPE – Tilt angle in dB/octave (negative = bass boost, positive = treble boost)
  • SOFT – Transition softness around the pivot frequency
  • SHAPE – Curve shape of the tilt response
  • PHASE – Phase mode (CMPX = complex, M+MP = magnitude + minimum phase)
  • LF/HF – Low and high frequency cutoff boundaries

GDelay

The GDelay (Group Delay) transform manipulates the phase response to add frequency-dependent time delays, useful for spatial effects and phase correction.

Parameter Range
DEPTH 0 – 100
CTR 80.0 – 8.00K
WID 0.050 – 2.000
SHAPE 0.50 – 4.00
MAX 0.0 – 30.0
MIX 0 – 100
LF OFF – 2.00K
HF OFF – 25.0K
  • DEPTH – Amount of group delay modification applied
  • CTR – Center frequency of the delay effect
  • WID – Width of the affected frequency band (in octaves)
  • SHAPE – Shape of the delay curve
  • MAX – Maximum delay time in milliseconds
  • MIX – Wet/dry mix of the processed signal
  • LF/HF – Low and high frequency cutoff boundaries

HRTF

The HRTF (Head-Related Transfer Function) transform applies binaural spatialization cues to simulate how sound interacts with the human head and ears.

Parameter Range
XFD 0 – 100
ITD 0.00 – 0.80
ILD 0.0 – 12.0
HEAD 200 – 2.00K
NDEP 0.0 – 12.0
NFQ 2.00K – 12.0K
LF OFF – 2.00K
HF OFF – 25.0K
  • XFD – Crossfeed amount between left and right channels
  • ITD – Interaural Time Difference (time delay between ears in ms)
  • ILD – Interaural Level Difference (level difference between ears in dB)
  • HEAD – Head size/diameter modeling frequency
  • NDEP – Nose depth/shadowing effect amount in dB
  • NFQ – Nose frequency (frequency where nose shadowing begins)
  • LF/HF – Low and high frequency cutoff boundaries

Authorization View

Upon installing ARIA on your computer, you must authorize it using the license serial number provided at the time of purchase. This window will open automatically on the first launch. You may also navigate to the Authorization View by clicking on ARIA Studio in the upper left corner of the UI. Once on the Authorization View, enter this serial number into the authorization field within ARIA, click 'verify', and then return to ARIA's Home View.

Audio Settings (AUDIO) View

ARIA's AUDIO view gives you access to key audio input and output settings when using ARIA as a standalone application. These include the selection of ARIA's input and output audio devices, which determine how audio is streamed into ARIA for processing and what device ARIA outputs sound to, respectively. ARIA's VST3 does not have an AUDIO view, as these settings are handled by the plugin host.

ARIA's sample rate may also be adjusted here. The input driver menu provides available drivers to select from based on the host machine and exclusive mode targets shared vs exclusive wasapi modes on Windows.

  1. Audio Driver: Choose the specific audio driver that ARIA will use for processing incoming and outgoing audio streams.

  2. Driver Mode: Select the desired Windows WASAPI mode from the following options:

    • Shared: Allows ARIA to share the audio driver with other applications.

    • Shared AC (Audio Communication): Optimizes sharing for communications applications.

    • Exclusive: Gives ARIA exclusive control over the audio driver for potentially higher fidelity.

  3. Buffer Size (AUTO/512): Change the audio buffer frame size between 512 and automatic assignment. When using Auto, the buffer size dynamically adjusts to match the host machine's buffer settings.

  4. Sample Rate: Set the operating frequency or sample rate at which ARIA processes audio. This should match the native sample rate of your audio content for best performance.

  5. Input Device: Select the virtual audio device (VAD) or physical audio device that will route audio into ARIA. This could be your sound card, an external audio interface, or a virtual cable.

  6. Output Device: Choose the output device through which ARIA will send the processed audio. This can be a Digital Audio Converter (DAC), a sound card, or another type of audio output device.

  7. Global Audio ON/OFF: Toggle this switch to enable or disable ARIA's audio streaming.

  8. RESET: Manually reset ARIA's audio session.

User Interface (UI) Settings

The user interface in ARIA is adjustable in real time from the User Interface (UI) Views in the Bottom Bar Menus. From here you can select different color themes, adjust hue, saturation, and lightness, and change font size or language. Save and load UI themes as well from the sub-preset browser under "Color". Key parameters available include:

  • HUE: Adjust the color hue for the engaged color theme with this knob.

  • SATURATION: Adjust the color saturation for the engaged color theme with this slider.

  • LIGHTNESS: Adjust the color lightness for the engaged color theme with this slider.

  • FONT SIZE: Adjust the font size of all text in ARIA's UI with this knob.

  • LANGUAGE: Change the interface language.

  • SLIDE TIME: Adjust the interface animation time with this parameter.

Global Color

Access the Global Color parameters from the Bottom Bar's navigation menu by selecting GLOBAL COLOR. Adjust the Hue, Saturation, and Lightness (HSL) of all UI components at once with this view. You may also adjust the animation duration in this menu.

Edit Color

Access the Edit Color parameters from the Bottom Bar's navigation menu by selecting EDIT COLORS. Use the subsequent category and parameter menus to filter down to the exact UI component and state modified by HSL changes.

Audio Routing To ARIA

ARIA is designed to accommodate any PCM digital audio input, functioning both as a standalone application and as a plugin within various hosts, such as Digital Audio Workstations (DAWs). This flexibility allows ARIA to integrate seamlessly into your existing audio setup.

Choosing the Right Virtual Audio Driver: The selection of an appropriate virtual audio driver is crucial and should be based on your specific output device, whether it's a dedicated Digital Audio Converter (DAC) or wireless audio device. There are several high-performance virtual audio drivers available that can enhance your experience by ensuring optimal compatibility and audio quality.

Visual Guide to Audio Routing:

A diagram of a company Description automatically generated

This diagram illustrates the path the audio signal travels from your source application through ARIA for processing, and finally out to your chosen audio output device.

macOS Audio Routing Sample

To send all audio from your computer system to ARIA Studio, use the include virtual audio device---ARIA-Audio-VAD.

  1. Go to your computer's sound settings and set your output sound device to ARIA-Audio-VAD.

  2. Open Audio MIDI Setup and make sure the sample rate of the VAD and your speakers, dac, or interface all match. Note the sample rate.

  3. Launch ARIA Studio.

Many applications allow you to send audio directly to ARIA-Audio-VAD from their output devices menu. To use this feature with ARIA, select ARIA-Audio-VAD as the output speaker in the streaming application. Launch ARIA Studio.

In ARIA's Audio Settings view set the following:

  1. ARIA's input to ARIA-Audio-VAD;

  2. ARIA's output to your speakers, dac, or interface;

  3. ARIA's sample rate to what you set in the prior steps;

  4. Core Audio as the driver;

  5. Any buffer size;

  6. Turn audio streaming on and return home.

You are now ready to process audio.

Windows Audio Routing Sample

To send all audio from your computer system to ARIA Studio, use any virtual audio device of your choosing. We use Hi-Fi Cable & ASIO Bridge by VB-Audio and ASIO4All.

  1. Go to your computer's sound settings and set your output sound device to your VAD input device---HiFi Cable's input in our implementations.

  2. Open Sound Settings and make sure the sample rate of the VAD's input, output, and your speakers, dac, or interface all match. Note the sample rate.

  3. Launch ARIA Studio.

Many applications allow you to send audio directly to your VAD's input from their output devices menu. To use this feature with ARIA, select your VAD input as the output speaker in the streaming application. Launch ARIA Studio.

In ARIA's Audio Settings view set the following:

  1. ARIA's input to your VAD's Output---HiFi-Cable's Output in our implementations;

  2. ARIA's output to your speakers, dac, or interface;

  3. ARIA's sample rate to what you set in the prior steps;

  4. Select an audio driver---we recommend DirectSound or Shared WASAPI at this time.

  5. Any buffer size;

  6. Turn audio streaming on and return home.

You are now ready to process audio.

Recommendations for Specific Devices:

  • Apple's Earbuds and Uncommon Sample Rates: For devices like apple's earbuds or others that operate at non-standard sample rates (such as 48kHz), using a sophisticated audio routing application like Loopback on macOS is recommended. Loopback allows you to configure multiple audio drivers with different sample rates and manages necessary sample rate conversions, facilitating seamless audio flow from standard sources (typically 44.1kHz) to your device.

Sample Rate Management

ARIA maintains the integrity of the audio signal by not resampling the input, processed, or output streams. This approach ensures that you have full control over the sample rate throughout the signal chain---from your streaming application to your Digital Audio Converter (DAC).

Setting the Sample Rate:

  • Configuration: Set the sample rate in the AUDIO settings view of ARIA to match the sample rate of your streaming audio. This synchronization is crucial to avoid any discrepancies that might affect sound quality.

  • Handling Mismatches: If the sample rate of the audio stream changes between tracks, this can lead to audible glitches or artifacts. To resolve such issues, adjust ARIA's sample rate to align with the source audio's sample rate and restart the audio stream.

System-Level Resampling:

  • Built-In Algorithms: Both Mac and Windows operating systems offer built-in resampling algorithms that can handle mismatches in sample rates when they occur. Whether or not to utilize these features can depend on your specific needs and the desired fidelity of the output.

  • Use Case Consideration: Consider the implications of using system-level resampling based on your audio setup and processing goals. While convenient, it may not always provide the best audio quality.

Virtual Audio Devices (VADs):

  • Consistency Across Devices: Virtual Audio Devices operate independently and may handle resampling differently. To ensure optimal performance, keep the sample rate of your VAD consistent with the source audio, ARIA's settings, and your DAC's capabilities.

  • Variable Sample Rates: If dealing with variable sample rates poses a challenge, you might opt to standardize the sample rate prior to processing in ARIA. Alternatively, allowing the operating system to manage sample rates via settings like WASAPI shared mode can simplify use.

Virtual Audio Devices (VADs)

Each virtual audio device (VAD) offers unique features and capabilities. Selecting the right VAD is crucial for optimizing your experience with ARIA. Below are our recommended options based on your operating system:

macOS Recommended VADs:

  • ARIA-Audio-VAD: Included with ARIA Studio.

  • BlackHole 2ch Virtual Audio Device: An excellent choice for routing audio between applications without latency.

  • Loopback by Rogue Amoeba: Provides more complex routing capabilities and allows for multiple audio channels and devices to be configured with ease.

Windows Recommended VADs:

  • HiFi Cable & ASIO Bridge by VB-Audio: Ideal for high-fidelity audio transfers and integrating with ASIO-supported applications.

  • VB-Cable Virtual Audio Device by VB-Audio: A straightforward solution for routing audio between applications.

Learning and Documentation:

It is strongly encouraged to familiarize yourself with the VAD you choose. Spend some time reviewing the manufacturer's documentation to fully understand the features and setup procedures. This knowledge will help you maximize the potential of your audio setup with ARIA.

Technical Specifications

Mac:

CPU: Apple Silicon M1 and newer
Memory: 8 GB RAM minimum (16 GB recommended)
Disk Space: 16 GB free on system drive
Operating System: macOS Catalina 10.15, Big Sur 11, Monterey 12, Ventura 13, Sonoma 14, or Sequoia 15
Screen Resolution: 1280x1024 minimum (1600x1024 recommended)

Windows:

CPU: X64 compatible Intel or AMD CPU
Memory: 8 GB RAM minimum (16 GB recommended)
Disk Space: 16 GB free on system drive
Operating System: Windows 10 64-bit, Windows 11
Screen Resolution: 1280x1024 minimum (1600x1024 recommended)

Sample Rates:

Both the plugin and standalone app support sample rates ranging from 44.1 kHz to 192 kHz.

Supported Plugin Formats:

  • macOS: VST3, AUv2, CLAP
  • Windows: VST3, CLAP

Digital Audio Workstations (DAWs) that support these plugin formats will host ARIA Studio.

Languages:

ARIA Studio supports the following languages: English, German, Spanish, French, Japanese, Portuguese, and Russian. Change the language from the UI settings in the bottom bar menu.

Audio Routing:

Whether you're on the standalone app or the plugin in a DAW, you'll want a virtual audio cable for routing. Try options like BlackHole, Loopback, or HiFi Cable & ASIO Bridge by VB Cable.

Third-Party Content Attribution

Impulse Response Library

The impulse response files included with ARIA Studio are provided by recordinghopkins and are used under the Creative Commons Attribution 4.0 International License (CC BY 4.0).

These original impulse responses include vintage analog plate and spring reverbs, as well as unique real acoustic spaces.