linuxaudio.org

On Wed, Aug 22, 2012 at 05:32:26PM -0400, David Robillard wrote:
> The oscillators actually have three CV frequency ports: frequency, lin.

quoted text
> FM, exp. FM.  Since the FM ports provide the ability to modulate in a

> moogey way, I'm thinking perhaps the ideal solution (outside AMS) is to

> simply make the frequency port Hz and leave the others as-is.  The

> others, being FM, are purely relative.

(upper case names refer to the enums in *.h, CV means audio rate in AMS)
FREQ (CV, log) : keyboard voltage, so this needs to be log in AMS.
OCTN, TUNE (control, log) : from GUI. In fact one control separated into

and 'octave' switch and 'tune' slider. They are two ports only because

AMS derives the GUI from the plugin interface. Today I'd separate them

only in the GUI.
Note that there is no problem at all if the for example the VCO has

middle C as the reference and the keyboard has A440. Just use the

'TUNE' control to shift everything by 3/4 octave. That's one of

the reasons why it exists.
> The filters are slightly different: they also have two CV FM ports (lin

quoted text
> and exp), but the cutoff frequency is a control port (not CV).  It might

> be nice to make this CV as well, space be damned.  This one port could

> also be Hz, leaving the others alone.

Sorry but this is wrong. The filters have:
A_FREQ (CV, log) : keyboard voltage),

C_FREQ (control, log) : GUI slider

A_FMOD (CV, log) : modulation (e.g. envelope), gain set by C_FMODG (slider).
So the 'cutoff' is avaiable as both CV and control, and they don't

have linear modulation. 
Ciao,
--

FA
A world of exhaustive, reliable metadata would be an utopia.

It's also a pipe-dream, founded on self-delusion, nerd hubris

and hysterically inflated market opportunities. (Cory Doctorow)
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