Hi, that is the way I'm pointing to. I know of those but it's a bit more complicated than that. Those bypass fiters have zero values of -1 and 1, while [bp~] has only pole values. So my question is if I can achieve [bp~] by only turning the zero values of -1 and 1 to 0. I actually tried it and it didn't seem to do the trick.

Maybe I'm doing something wrong. I don't know. It'd solve my issue if I could have [bp~] as biquad coefficients. But if not, I'd need some guidelines on how to plot the frequency response in the same way as [filterview] or [mmb.filterplot] plot the biquad coefficients.

Cheers

2014-04-09 8:30 GMT-03:00 Colet Patrice <colet.patrice@free.fr>:

Le 09/04/2014 01:45, Alexandre Torres Porres a écrit :

Hi there. I'm trying to find a way to plot the frequency response of [bp~].

Hello, I don't know if it helps, in ggee there are filter objects that are applying formula for biquad coefficients, it's easy to use those formula in expr and apply them to biquad object in vanilla.
I know of patches that can plot from biquad coefficients, so it'd be great if I could get biquad coefficients from an input of frequency and Q.

I see [bp~] is a 2 pole filter. So does it mean I can achieve it by zeroing out a bandpass filter made with [biquad~]? Cause I see people make bandpass filters with 2poles in biquad, but the zeros are at -1 and 1. I tried zero values of zero, but it didn't look to good to make me believe that's the same as [bp~].

I know of miller's example H10.measurement.pd, and compared to it, didn't seem to fit.

Anyway, I wanted something that would plot [bp~] right away, not like the H10 example, which takes some time. But then, if we can't do it with biquad coefficients, I would need some guidelines to do it some other how.

Thanks

Cheers

I know about filterview and patch
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