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filter notch

Started by tw April 24, 2008
Could you tell me how filter notch work's?
On Apr 25, 6:36 am, tw <"zoty1[nospam]"@tlen.pl> wrote:
> Could you tell me how filter notch work's?
It has a frequency response that is flat then dips down sharply to attenuate noise in a narrow band of frequencies...

tw wrote:

> Could you tell me how filter notch work's?
It works very well, if you don't ask too much. VLV
tw wrote:
> Could you tell me how filter notch work's?
What kind of notch filter? Analog? Digital? Software? I imagine that you are interested in the principle of operation. We would need to know more about your background to give a meaningful answer Jerry -- Engineering is the art of making what you want from things you can get. &macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;&macr;
On Apr 24, 10:36 am, tw <"zoty1[nospam]"@tlen.pl> wrote:
> Could you tell me how filter notch work's?
Zero on the unit circle in the complex Z-plane (actually just inside, to be stable even in the presence of arithmetic/rounding/quantizing type errors or noise).
Ron N. wrote:
> On Apr 24, 10:36 am, tw <"zoty1[nospam]"@tlen.pl> wrote: > > > Could you tell me how filter notch work's? > > Zero on the unit circle in the complex Z-plane > (actually just inside, to be stable even in the > presence of arithmetic/rounding/quantizing type > errors or noise).
How would you characterize the stability issue of zeros?
On Apr 25, 12:02 am, Andor <andor.bari...@gmail.com> wrote:
> Ron N. wrote: > > On Apr 24, 10:36 am, tw <"zoty1[nospam]"@tlen.pl> wrote: > > > > Could you tell me how filter notch work's? > > > Zero on the unit circle in the complex Z-plane > > (actually just inside, to be stable even in the > > presence of arithmetic/rounding/quantizing type > > errors or noise). > > How would you characterize the stability issue of zeros?
(must have been a brain flip :) Are notches that close to the unit circle even "usefully" invertible to stable poles? IMHO. YMMV.