On Tuesday 31 July 2007 08:29:32 Johnathan Corgan wrote:
> Marcus Leech wrote:
> > Is there a way to produce an efficient notch filter with the bandpass
> > filter designer in Gnu Radio?
>
> You can subtract the output of a linear phase bandpass filter from the
> original signal, as long as the original signal has been delayed by the
> same number of taps as the filter before the subtraction.
I use the band_reject filter option see below:
elif options.filter_type == "nf":
coeffs = gr.firdes.band_reject(
1.0,
sample_rate,
frequency - (bandwidth/2),
frequency + (bandwidth/2),
50,
gr.firdes.WIN_HANN)
For more info consult the documentation,
cheerio Berndt
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