[LAD] Plugin 1/oct frequency controls (AMS/MCP/VCO)

[David Robillard]

On Wed, 2012-08-22 at 10:22 -0700, Sean Bolton wrote:
> Hi Dave,
> 
> On Wed, 22 Aug 2012 12:43:27 -0400 David Robillard <d at drobilla.net>
> wrote:
> > Originally I was thinking about a
> > control to set the base frequency, but it sounds like you are
> > thinking about adding a Hz frequency CV port.  This is a better idea,
> > since you get both options, and the debate goes away entirely.  The
> > overhead is about 2 multiplications per sample, so not really an
> > issue.
> 
> Careful there.  You will find that to get the 1/oct modulation to work,
> you'll need a calculation somewhat like this:
> 
> frequency = exp2(octave_mod_port + log2(Hz_port))
> 
> which in light of this overlong discussion, makes me laugh out
> loud!

... the calculation is not the issue, the interface is.

-dr

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