Man Scilab

wavread - load .wav sound file

Calling Sequence

y=wavread(wavfile)

y=wavread(wavfile,ext)

[y,Fs,bits]=wavread(wavfile)

[y,Fs,bits]=wavread(wavfile,ext)

Parameters

• wavfile : string (The .wav extension is appended if no extension is given)
• Fs : integer, frequency sampling in Hz.
• ext : string ( 'size' ) or integer (to read n samples) or 1 x 2 integer vector [n1,n2] (to read from n1 to n2).

Description

Utility function to read .wav sound file. wavread(wavfile) loads a sound file specified by the string wavfile, 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]=wavread(wavfile) returns the sample rate (Fs) in Hertz and the number of bits per sample used to encode the data in the file.

wavread(wavfile,n) returns the first n samples from each channel.

wavread(wavfile,[n1,n2]) returns samples n1 to n2.

read(wavfile,'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].

Examples

  wavread('SCI/demos/sound/chimes.wav','size')

  [y,Fs,bits]=wavread('SCI/demos/sound/chimes.wav');Fs,bits
  subplot(2,1,1)
  plot2d(y(:,1))
  subplot(2,1,2)
  plot2d(y(:,2))
  
  y=wavread('SCI/demos/sound/chimes.wav',[1 5]) //the first five samples

 
  

See Also

auread ,   savewave ,   analyze ,   mapsound ,  

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