Re: [linux-audio-dev] convolution reverb ?

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Subject: Re: [linux-audio-dev] convolution reverb ?
From: J Digital (joshdigital_AT_hotmail.com)
Date: ti elo    24 1999 - 23:56:39 EDT

I use real time convolution all the time (except when i am emailing, or
sleeping). I dont know how common my 'trick' is - but what i do is make a
LONG circular buffer, eg 4 seconds, and specify a SMALL number of taps on
that buffer (eg 64). Then you can do neat things by applying controller
curves to not only the feedforward and feedback parameters, but also to the
tap point..
check out some dodgy source code at www.response.cx

josh 

--
josh_AT_response.cx

>From: Dave Phillips <dlphilp_AT_bright.net>
>To: Jörn Nettingsmeier <nettings_AT_folkwang.uni-essen.de>
>CC: linux-audio-dev <linux-audio-dev_AT_ginette.musique.umontreal.ca>
>Subject: Re: [linux-audio-dev] convolution reverb ?
>Date: Tue, 24 Aug 1999 13:25:49 -0400
>
>Jörn Nettingsmeier wrote:
>
> > at a workshop (see below) i learned about a concept called
> > convolution. [snip]
> >
> >   does anyone know about linux implementations of this concept ?
> > the algorithm doesn´t appear too complicated, it seems it´s all
> > about cpu-time.
>
>Csound does pretty decent convolution, and my Csound Resources page
>lists some sources for impulse response files. You do have to be careful
>about amplitudes, but yes, the results are worth the time waiting.
>Convolution seems a bit beyond realtime at this point, at least for my
>machine. Does anyone know of research or implementation of realtime
>audio convolution ?
>
>Finally, there's a good explanation of it (with source code) in F.R.
>Moore's "Elements Of Computer Music".
>
>The Linux Csound/Csound Resources page is located at:
>
>	http://www.bright.net/~dlphilp/linux_csound.html
>
>Lots of great stuff listed here, and it has been updated as of this
>morning.
>
>== Dave Phillips
>
>        http://www.bright.net/~dlphilp/index.html
>    http://sunsite.univie.ac.at/Linux-soundapp/linux_soundapps.html

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