[linux-audio-dev] Re: Cheby amp code

[Tim Goetze]

Steve Harris wrote:

>On Mon, Nov 04, 2002 at 11:10:14 -0800, Paul Winkler wrote:
>> > For the record my current guess for an amp process is:
>> > 
>> >               .-> bandpass -> shaper -.     .--- LP <--.
>> >               |                       |     v          |
>> > input -> EQ? -+-> bandpass -> shaper -+-> delay -> EQ ---> output
>> >               |                       |
>> >               `-> bandpass -> shaper -'
>> 
>> well, we'd have to try it and see :)
>> 
>> the delay w/ lp in feedback -  is that basically
>> how you make a resonant lopass filter? 
>
>No, its a primitive cabinet simulator. Just model reflections off the back
>wall. The LP represents absorbion in the fiberous stuff inside. I read
>about the technique somewhere... music-dsp probably.

i do think that the in-cab echo is part of the impulse response
if you have a convolver ('imp_1199', 'unmatched') following the
shaper summation node. it sounds to me like it is fwiw.

how many split bands do you think we'll need?

nice ascii, btw.

tim