1 Dec
2010
1 Dec
'10
4:11 p.m.
On Wed, Dec 01, 2010 at 05:21:09PM +0300, Andrew Gaydenko wrote:
On Wednesday, December 01, 2010 16:33:35
fons(a)kokkinizita.net wrote:
Fons, thanks! It is *that* trick I needed to eliminate my doubts wrt fs/2
products :-) I think SRC is an approriate lib for up/down-sampling.
For the fixed ratios you need zita-resampler will probably
somewhat faster.
--
FA
There are three of them, and Alleline.
I'm
afraid direct amplitude caculation in accorance with a0...aN will
produce "too fast" signal deviation, resulting in exceeding fs/2 band.
Any non-linear transfer function will do this for some inputs.
If you have an x^N term, anything above Fs/(2*N) will alias.
If you want the nonlinearity without aliasing, you have to
upsample (by a factor N, with N = highest power of x used),
apply the nonlinear function, then downsample.