Multichannel Audio Input and Output

Acquire multichannel audio data and generate signals with Windows^® sound cards

Before you use audio channels, see Data Acquisition Toolbox Supported Hardware.

Functions

`addinput`	Add input channel to device interface (Since R2020a)
`addoutput`	Add output channel to device interface (Since R2020a)
`removechannel`	Remove channel from device interface (Since R2020a)

Topics

Audio Input and Output
Acquire and generate audio signals using one or more device channels.

Featured Examples

Acquire Continuous Audio Data

Set up a continuous audio acquisition using a microphone.

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Generate Audio Signals

Generate audio signals using a 5.1 channel sound system.

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Set up continuous audio generation using multiple audio channels. The signal, a sample of Handel's "Hallelujah Chorus", is broken up into contiguous segments and played back in two parts. The first part of the example plays each segment on a single speaker and a sub-woofer. The second part plays each segment on a different set of speakers (a choir of voices).

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Create an Echometer Using Audio Measurements

Create an echometer sonar using audio data acquisition and signal processing, which can measure distance by determining the time of flight of a sound pulse reflected off of a surface.

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Create an App for Analog Triggered Data Acquisition

Create an analog-triggered data acquisition app by using Data Acquisition Toolbox™ and App Designer.

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Analog Triggered Data Acquisition Using Stateflow Charts

Create an analog-triggered data acquisition app by using Stateflow®, Data Acquisition Toolbox™, and App Designer.

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Create an App for Live Data Acquisition

Create an app which acquires data from a DAQ device or sound card, displays a live data view, and logs data to a MAT file.

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Impulse Response Measurement Using a NI USB-4431 Device

Measure an impulse response using a National Instruments™ (NI) USB-4431 sound and vibration device and the Impulse Response Measurer app.

Open Live Script