[music-dsp] sinc FIR ?
r_obert at hotmail.com
Wed Apr 6 20:03:33 EDT 2005
I'm redoing some sample and decimate code I have for an audio project. I
had been using standard halfband filters, but after following the recent
"downsampling" thread, I realize that the -3 dB at the fs/4 is going to
result in too much aliasing for me ... especially if it's only a single
stage of decimation. In that regard, my interest was heightened by
discussion of the sinc FIR filter. If I understood correctly, this filter
will provide great attenuation at fs/4? But I'm not having much luck
finding out more information. Can someone point me to some, or lend a
description on how it's generated?
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