[music-dsp] Tweakable filters of higher orders?
earlevel at earlevel.com
Wed Sep 29 02:28:56 EDT 2004
Yes, that is the usual thing to do--higher order filters get too
sensitive to coefficient precision. Most DSP texts point this out, and
suggest using series or parallel combinations of lower order filters. I
wanted to add that--it may or may not be obvious--when you cascade
several lower order filters, remember that the frequency cutoff moves
(because it's defined as the -3dB points, and since the cascade changes
On Sep 28, 2004, at 3:17 PM, Koen Tanghe wrote:
> On Sunday, September 26, 2004 1:46 AM [GMT+1=CET],
> Koen Tanghe <xxxkoen at smartelectronix.comxxx> wrote:
>> Can I just use a cascade
>> of multiple identical instances of a biquad to get "sharper" filters?
>> are there any special things to do?
> Well, that's what I ended up with for now. Appears to work fine...
More information about the music-dsp