| | | Scilab Reference Manual | |
|---|
wavread — load .wav sound file
y=wavread(wavfile) y=wavread(wavfile,ext) [y,Fs,bits]=wavread(wavfile) [y,Fs,bits]=wavread(wavfile,ext)
| 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). |
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].
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
| << sound | wavwrite >> |