Audio toolbox enables real time audio input and output.
Mat lab audio files.
Read and write audio files write data to an audio file get information about the file and then read the data back into the matlab workspace.
Audio data in the file returned as an m by n matrix where m is the number of audio samples read and n is the number of audio channels in the file.
These mat files include chirp gong laughter splat train and handel.
There is a built in function sound that will send a sound signal to an output device such as speakers.
Write to audio file get information about audio file.
For example load a sample mat file that contains signal and sample rate data and listen to the audio.
For simple playback using a single function call use sound or soundsc.
On linux platforms audioinfo might also return information about the contents of any files supported by gstreamer.
After you import or record audio matlab supports several ways to listen to the data.
Audioinfo can extract audio metadata from mpeg 4 mp4 m4v video files on windows 7 or later macos 10 7 lion or higher and.
Matlab has several mat files that store for various sounds the signal vector in a variable y and the frequency in a variable fs.
Sends the signal in vector y with sample frequency fs to the speaker on the pc and most unix platforms values in y are assumed to be in the range 1 0 y 1 0.
Using the enhanced functionality of audio toolbox audio i o you can interact with the low latency asio driver on windows selectively map to and from device channels and control your device bit depth to manage a database of audio files use audiodatastore.
On linux platforms audioinfo might also return information about the contents of any files supported by gstreamer.
If you do not specify datatype or datatype is double then y is of type double and matrix elements are normalized values between 1 0 and 1 0.
Values outside that range are clipped stereo sound is played on platforms that support it when y is an n by 2 matrix.
On windows 7 platforms or later audioinfo might also return information about the contents of any files supported by windows media foundation.
