Re: IIR band pass filter design query

Hi,

Is it so that "high Q" in your requirement translates into "steep edges"?
If so, some thoughts:

Under some circumstances it may be better to
-downconvert the signal in the digital domain to 0 Hz,
-use complex *lowpass* filters
-and translate back up to the center frequency.

Maybe a standard BP design will do. But if you find it's impossible, check
this option. Multirate filter books tell how it's done most efficiently.

Alternative, if it doesn't have to be real-time: try to use one huge FFT
on the whole signal

Cheers

Markus


.

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