Information about a digital audio file can be recovered by using a built-in function: audioinfo.
The basic syntax for using the function is the following:
info = audioinfo(filename)
Input Variable:
filename – a string containing the name of the file. Example: ‘testSignal.wav’
Output Variables:
info – a structure containing the following pieces of information about the file.
info.Filename – a string of the sound file’s name.
info.CompressionMethod – a string describing the method of data compression.
info.NumChannels – a scalar describing whether the file is mono (1) or stereo (2).
info.TotalSamples – a scalar representing the number of samples per channel.
info.Duration – a scalar representing the length of the file in seconds.
info.BitsPerSample – a scalar representing the bit depth of the file.
Now that you have learned the basics of working with audio in Matlab, you are ready to to get set up in the Matlab environment.
Further documentation for the function is available here.
Links to other related functions: audioread, sound, audiowrite