Time Varying Filters

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2 total messages Started by Robert Dyas Fri, 14 Jun 1991 22:13

#2040

Author: Robert Dyas
Date: Fri, 14 Jun 1991 22:13

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I'm working on a project which requires the use of time varying filters (ie. a filter
whose coefficients vary with time).  I'm aware of the potential problems but I need 
more information on the subject.  In particular I've found occasions when a change of
filter coefficients causes a DC bump in the output.  I was aware that this might
happen, but I would like to know the details of why this happens.  All the DSP
texts I have deal only with time invariant filters and shed no light on this topic.
Any help or pointers to articles and/or texts would be greatly appreciated.


Thanks -
Bob Dyas
PRISM Interactive Products

Re: Time Varying Filters

#2043

Author: Steve Warwick
Date: Mon, 17 Jun 1991 15:48

3 lines
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see " multirate digital signal processing "

     by R. Crochiere and L Rabner.

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