UPGRADE YOUR BROWSER

We have detected your current browser version is not the latest one. Xilinx.com uses the latest web technologies to bring you the best online experience possible. Please upgrade to a Xilinx.com supported browser:Chrome, Firefox, Internet Explorer 11, Safari. Thank you!

cancel
Showing results for 
Search instead for 
Did you mean: 
Highlighted
Explorer
Explorer
2,844 Views
Registered: ‎04-16-2009

Fir compiler

Jump to solution

AFAIK, FIR is nothing more than a set of (convolution) coefficients. Now, how is it possible that you provide both passband and stopband as input arguments for the filter generation along with the coefficients? Aren't they related, implying redundancy or, more likely, incompatibility conflicts? Why I always have a low-pass filter, no matter which coefficients I choose? Why don't coefficients affect anything but ripple? Why do I get a low-pass filter, despite my pass band is in (0.5-1) and stop-band in the range (0-0.5)?

0 Kudos
1 Solution

Accepted Solutions
Xilinx Employee
Xilinx Employee
3,060 Views
Registered: ‎08-02-2011

Re: Fir compiler

Jump to solution

Everything in that 'frequency response tab' of the FIR Compiler GUI (i.e. the stopband/passband settings) is simply for setting up the analysis of the display. It doesn't affect your coefficients or the actual response of the filter at all.


This is touched on in the datasheet.

www.xilinx.com

View solution in original post

0 Kudos
2 Replies
Xilinx Employee
Xilinx Employee
3,061 Views
Registered: ‎08-02-2011

Re: Fir compiler

Jump to solution

Everything in that 'frequency response tab' of the FIR Compiler GUI (i.e. the stopband/passband settings) is simply for setting up the analysis of the display. It doesn't affect your coefficients or the actual response of the filter at all.


This is touched on in the datasheet.

www.xilinx.com

View solution in original post

0 Kudos
Explorer
Explorer
2,818 Views
Registered: ‎04-16-2009

Re: Fir compiler

Jump to solution

I have accepted but I do not agree that it is clear from the datasheet.

0 Kudos