bandpass filter design for ACTEL FPGA

Started by mughat January 13, 2006
Anyone have experience with designing band pass filters for ACTEL FPGAs? 
Tools, appnotes anything is of interest.

I my project I have to make some DSP on 3 audio signals (100Hz-22Khz). 
Planing on using the new Fusion mixed-signal FPGA from ACTEL.


mughat wrote:

> Anyone have experience with designing band pass filters for ACTEL FPGAs? > Tools, appnotes anything is of interest. > > I my project I have to make some DSP on 3 audio signals (100Hz-22Khz). > Planing on using the new Fusion mixed-signal FPGA from ACTEL. > >
You need to design the filter first using some filter design software (this will give your the filter architecture and coefficients). Then you can worry about putting into the device. You don't say much about your requirements or environment. Audio sample rates are much lower than what modern FPGAs can be clocked at, so it is perfectly reasonable to use a combination of bit serial and time-multiplexed logic to reduce the footprint of your filter.