[scilab-Users] Working with audio

[Antoine Monmayrant]

On 05/27/2010 10:08 AM, meteor girl wrote:
> I'm new to Scilab, and I'm having a difficult time figuring out how I can
> analyze the signals in these mp3s:
>
> http://www.archive.org/details/ird062
>
> How would I go about this? Is there any way I import the file without
> requiring it to be a .wav file? I have converted, but I'd like to not lose
> in a audio quality through transcoding it from an already lossy format.
>
> I did convert it to .wav to see if I could use wavread and analyze, as
> mentioned at http://cermics.enpc.fr/~jpc/mopsi/doc/ch19.html
>
> Wavread told me "mget: stack size exceeded (Use stacksize function to
> increase it)."
The file you try to open is too big for the current stacksize.
You need to try to increase the stacksize to avoid this problem:

stacksize('max');

> So, I tried
>
> y=wavread("test.wav", [1 5])
>
> That made it not complain, but I'm not sure what that does.
>
> analyze(y) and mapsound(y) complain that y is an undefined variable after
> what I thought was already assigned above.
>
> I need a decent overview of how to work with audio in Scilab and hope
> someone here can help.
>
>    


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