Wavwrite doesn't work

I have these two simple lines of code:

[x1,fs,nbits] = wavread('old.wav'); 
%Get only one channel - the first one
%x1 = x1(:,1);   
wavwrite(x1,fs,nbits,'new.wav');

at the end I basically wanted to do something with the input (old.wav) samples before writing it to new.wav, but this itself doesn't work. I dont see a new.wav getting created, when I have the file already, nor do I see it getting overwritten with the contents of the old.wav file. Please help!!

Answer 1

[Wayne King]

Are you getting any error messages in the command line?

Enter

    >>pwd

at the command prompt. Is this the same place that you are trying to read the .wav file from?