Measurements and Spatial Audio
Audio Toolbox™ enables you to perform measurements on audio systems using functionality to generate test excitation signals, estimate impulse responses, and calculate industry-standard metrics.
You can also use Audio Toolbox features to work with spatial audio signals. Read head-related
transfer functions (HRTFs) stored in SOFA files, and interpolate HRTFs with
interpolateHRTF
. Synthesize room impulse responses for
virtual indoor spaces with acousticRoomResponse
. Use ambisonicEncoderMatrix
and ambisonicDecoderMatrix
to encode and decode 3-D audio using
ambisonics.
Apps
Impulse Response Measurer | Measure impulse response of audio system |
Functions
Properties
Meter Properties | Audio Meter UI component (Since R2023b) |
Blocks
Loudness Meter | Standard-compliant loudness measurements |
Topics
- Measure and Manage Impulse Responses
Capture and analyze impulse response (IR) measurements by using the Impulse Response Measurer.
- Create an App to Play and Visualize Audio Files
Create an app in App Designer to play and visualize audio files.
- Surround Sound Matrix Encoding and Decoding
This example shows how to generate a stereo signal from a multichannel audio signal using matrix encoding, and how to recover the original channels from the stereo mix using matrix decoding.
- Audio Device Test Stimuli
Exercise a nonlinear system with common audio device stimuli and compare the advantages and disadvantages of the different stimuli.
- Analyze Ambisonic Decoders
Derive objective metrics to analyze the performance of an ambisonic decoder.
- Ambisonic Spatial Transformations
Apply spatial transformations to an ambisonic signal.