Re: [music-dsp] confirm a2ab2276c83b0f9c59752d823250447ab4b666

� h. �i wonder if someone is trying to tell me something � Original Message Subject: confirm a2ab2276c83b0f9c59752d823250447ab4b666 From: music-dsp-requ...@music.columbia.edu Date: Mon, March 28, 2016 2:31 pm To:

Re: [music-dsp] confirm a2ab2276c83b0f9c59752d823250447ab4b666

This happened to me also, but I didn't give it much thought. On Mon, Mar 28, 2016 at 4:31 PM, robert bristow-johnson < r...@audioimagination.com> wrote: > > > h. i wonder if someone is trying to tell me something > > > > Original Message

Re: [music-dsp] Changing Biquad filter coefficients on-the-fly, how to handle filter state?

robert bristow-johnson писал 2016-03-28 23:31: This statement implies the LTI case, where the concept of the transfer function exists. i didn't say that. i said "applying ... to the same integrator." about each individual "transfer function" that looks like "s^(-1)" You were talking about

Re: [music-dsp] Changing Biquad filter coefficients on-the-fly, how to handle filter state?

Ethan Fenn писал 2016-03-25 20:57: oscillator. The update step looks like this: y := p + b0*x p := -(a1/2)*p + (sigma/2)*q + (b1 - a1*b0)*x q := -(sigma/2)*p - (a1/2)*q + (1/sigma)*(2*b2 - 2*a2*b0 - a1*b1 + a1^2*b0)*x Is there a name for this kind of representation? This looks like a

Re: [music-dsp] Changing Biquad filter coefficients on-the-fly, how to handle filter state?

Original Message Subject: Re: [music-dsp] Changing Biquad filter coefficients on-the-fly, how to handle filter state? From: "Ethan Fenn" Date: Mon, March 28, 2016 11:43 am To:

Re: [music-dsp] Changing Biquad filter coefficients on-the-fly, how to handle filter state?

Hi Vadim, IIRC, the problem with this form (as with Jordan normal form in principle) > is that it gets ill-conditioned when the poles get close to each other > (upon the first look I'm not sure where this ill-conditioning appears in > your formulas, though, so I might be wrong there, or there

Re: [music-dsp] Changing Biquad filter coefficients on-the-fly, how to handle filter state?

I don't know much about these yet -- but your book is on my list to read in the near future! This stuff is actually simpler than what you're trying to do. So I'm not sure, what are you waiting for ;) robert bristow-johnson писал 2016-03-28 17:57: using the trapezoid rule to