Re: Sample-rate conversion
Re: Sample-rate conversion
- Subject: Re: Sample-rate conversion
- From: Marc Poirier <email@hidden>
- Date: Wed, 4 Feb 2004 10:55:18 -0600 (CST)
On Wed, 4 Feb 2004, Franck Stauffer wrote:
>
Hey jens,
>
>
I don't think averaging things the way you do it is safe. If you'd like
>
downsampling things properly i suggest you use something like cubic
>
spline interpolation. I guess the music-dsp
>
source code archive has a code that does this...
That will help, and lowpassing any frequencies that would be above the new
Nyquist before doing the interpolation is required for decent results,
too. Probably the easiest is to just use the AudioConverter APIs in OS X,
which are highly optimized and also are, in some people's opinion, the
best sounding sample rate conversion algorithms yet.
Marc
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