[CM] Resampling in SND

e deleflie edeleflie@gmail.com
Tue, 22 May 2007 14:16:25 +1000


I've noticed that save-sound-as contains a field for sample rate  ...
I've tried putting a different sample rate in there but there was no
conversion.

What about if I want to change the bit-depth (from 16 to 24)? how
would I do that?

Etienne

On 5/18/07, Bill Schottstaedt <bil@ccrma.stanford.edu> wrote:
> >  can anyone advise on the best quality re-sampling option?
>
> src-sound is Snd's resampler; its quality depends to some extent
> on the sinc-width (this sets the length of the section of sound that
> is convolved with a sinc function during the conversion).  The
> src speed is directly proportional to this width, so its default in
> Snd is 10 -- this is about as small as it can be, so you will sometimes
> hear artifacts -- Perry Cook liked 40 as a default, and I've heard
> cases where I had to use 100 -- listen to the result and if it
> sounds fine, you've got the right choice.  Look under sinc-width
> in extsnd.html for a test case.
>
>