Subject: Re: [linux-audio-dev] Moog VCF in SpiralSynthModular
From: Steve Harris (S.W.Harris_AT_ecs.soton.ac.uk)
Date: Fri May 24 2002 - 20:23:45 EEST
On Fri, May 24, 2002 at 06:55:51 +0200, Dr. Matthias Nagorni wrote:
> On Fri, 24 May 2002, Steve Harris wrote:
>
> > The right choice imho. More to the point, you can coonect control or audio
> > output to audio inputs, so you can do what you'de like with an audio rate
> > resonace/cutoff input.
> I'm currently implementing the filters with audio ports for both frequency
> and resonance. An audio port for dBgain might be useful for the peaking EQ
> as well. There will be additional control ports for frequency offset,
> resonance offset and a frequency pitch factor [-2..2].
> In a modular synth not every port has to be connected to a CV. So
> I plan to allow that frequency and resonance audio ports may be
> left unconnected. In this case they should be initialized with a NULL
> pointer. The run method then checks for NULL pointers and executes
> different loops.
I think this is a bad precident. Other ladspa plugins will segfault if you
try this.
Its an interesting problem though. I would suggest maybe NaN if its not
connected.
- Steve
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