MATLAB Function Reference

auread

Read NeXT/SUN (.au) sound file

Graphical Interface

As an alternative to auread, use the Import Wizard. To activate the Import Wizard, select Import data from the File menu.

Syntax

• y = auread('aufile')
  [y,Fs,bits] = auread('aufile')
  [...] = auread('aufile',N)
  [...] = auread('aufile',[N1,N2])
  siz = auread('aufile','size')
  

Description

y = auread('aufile') loads a sound file specified by the string aufile, returning the sampled data in y. The .au extension is appended if no extension is given. Amplitude values are in the range [-1,+1]. auread supports multi-channel data in the following formats:

• 8-bit mu-law
• 8-, 16-, and 32-bit linear
• floating-point

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

[...] = auread('aufile',N) returns only the first N samples from each channel in the file.

[...] = auread('aufile',[N1 N2]) returns only samples N1 through N2 from each channel in the file.

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

See Also

auwrite, wavread

audiorecorder

auwrite