rmd@gca-prism.com (Robert Dyas) (06/15/91)
********** 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
sdw@hpsad.HP.COM (Steve Warwick) (06/17/91)
see " multirate digital signal processing "
by R. Crochiere and L Rabner.