Re: 60Hz Notch filter at 25kHz sampling rate?

Hello,

I have an ENG signal, sampled at 25kHz that has high mains interference
that I want to remove. The problem is I need the surrounding
frequencies,
maybe not 50-70, but I can't afford to sacrifice much more than this.
The
filter designs I've been looking at don't seem to be able to do this at
such a high sampling rate.

Any suggestions? Would downsampling help?

Thank you in advance for your help

Allison




Hi Allison,
Here's a simple IIR notch filter that you can try. Feel free to e-mail me
with questions.
Steve

http://www.dspguide.com/ch19/3.htm


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