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Please note that the recommended version of Scilab is 6.0.1. This page might be outdated.
See the recommended documentation of this function

Scilab Help >> Sound file handling > auread


load .au sound file

Calling Sequence




string (The .au extension is appended if no extension is given)




integer, frequency sampling in Hz.


string ('size' or 'snd') or integer (to read n samples) or 1 x 2 integer vector [n1,n2] (to read from n1 to n2).


Utility function to read .au sound file. auread(aufile) loads a sound file specified by the string aufile, returning the sampled data in y. Amplitude values are in the range [-1,+1].

Supports multi-channel data in the following formats: 8-bit mu-law, 8-, 16-, and 32-bit linear, and floating point.

[y,Fs,bits]=auread(aufile) returns the sample rate (Fs) in Hertz and the number of bits per sample used to encode the data in the file.

auread(aufile,n) returns the first n samples from each channel.

auread(aufile,[n1,n2]) returns samples n1 to n2.

auread(aufile,'size') returns the size of the audio data contained in the file in place of the actual audio data, returning the vector as [samples channels].

auread(aufile,'snd') returns information about the sample and data as a tlist.



// default is 8-bits mu-law

See Also

  • savewave — save data into a sound wav file.
  • analyze — frequency plot of a sound signal
  • mapsound — Plots a sound map
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Last updated:
Thu Oct 02 13:46:52 CEST 2014