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Audio Toolbox

Design and analyze speech, acoustic, and audio processing systems

Audio Toolbox™ provides tools for audio processing, speech analysis, and acoustic measurement. It includes algorithms for processing audio signals such as equalization and time stretching, estimating acoustic signal metrics such as loudness and sharpness, and extracting audio features such as MFCC and pitch. It also provides advanced machine learning models, including i-vectors, and pretrained deep learning networks, including VGGish and CREPE. Toolbox apps support live algorithm testing, impulse response measurement, and signal labeling. The toolbox provides streaming interfaces to ASIO™, CoreAudio, and other sound cards; MIDI devices; and tools for generating and hosting VST and Audio Units plugins.

With Audio Toolbox you can import, label, and augment audio data sets, as well as extract features to train machine learning and deep learning models. The pre-trained models provided can be applied to audio recordings for high-level semantic analysis.

You can prototype audio processing algorithms in real time or run custom acoustic measurements by streaming low-latency audio to and from sound cards. You can validate your algorithm by turning it into an audio plugin to run in external host applications such as Digital Audio Workstations. Plugin hosting lets you use external audio plugins as regular MATLAB® objects.

Get Started

Learn the basics of Audio Toolbox

Audio I/O and Waveform Generation

Record and play audio from devices, read and write audio files, generate waveforms

Audio Processing Algorithm Design

Audio processing tools, algorithm design and modularization, stream processing

Machine Learning and Deep Learning for Audio

Dataset management, labeling, and augmentation; segmentation and feature extraction for audio, speech, and acoustic applications

Measurements and Spatial Audio

Acoustics, psychoacoustics, room impulse response, HRTF, SPL metering

Simulation, Tuning, and Visualization

Real-time prototyping and tuning, MIDI, audio test bench

Musical Instrument Digital Interface (MIDI)

Create, send, and receive MIDI messages

Audio Plugin Creation and Hosting

VST and AU generation, testing, validation, and hosting

Code Generation and Deployment

Generate standalone applications for desktop computers, mobile devices, and embedded targets