MATLAB wave recording problem

[nwo4life]

wavwrite

HI,

I am having problems with MATLABs wave recording. I need to record a speech with fs = 8kHz at 8 bits/sample (one channel). Here is my code but it doesn't work,

y = wavrecord(5*fs, fs,1, 'uint8'); --> WORKS
wavplay(y,fs); -->WORKS
wavwrite(y, 8, 'test.wav');
x = wavread('test.wav');

The wavwrite command does not work properly, no errors occur but the when I play the file using Windows Media Player i don't hear anything. When I read the wav file back in to MATLAB its all the numbers in the vector are the same. i have also tried with two channels and the same result appears.

If anyone has an answer to this problem, please help me.

 

[nwo4life]

matlab recording problem

If someone can give me some help. I would really appreciate it.

THANKS

 

[echo47]

code for matlab wave recording

wavrecord with uint8 returns values from 0 to 255, but wavwrite expects -1 to +1.
Try this:

fs = 11025;
x = wavrecord(2*fs, fs, 'uint8');
wavplay(x, fs);
wavwrite((double(x)-128)/128, fs, 8, 'test.wav');
system('test.wav'); % Windows will play it

 

[sania]

wave recording in matlab

hello
i need complete coding of voice recognition
i have no time to submit my final year project and i worked alot on it but my coding has got some errors and i need a coding so that i can match mine and i can correct mine
kindly help me in giving me coding of voice recognition