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

Fons Adriaensen fons at linuxaudio.org
Mon Aug 20 19:26:47 UTC 2012

On Mon, Aug 20, 2012 at 12:34:38PM -0400, David Robillard wrote:
> So far I have done all of MCP and all of VCO.

You'll find a call to exp2ap() with a complicated sum as
the argument. One of the terms of that sum, usually near
the end, is a constant. Adding 0.75f to that should
transpose verything from middle C to A (440) - 3/4 octave

Also please check that all FP constants are single
precision as well as all math.h functions. I was
rather careless with that when I wrote those plugins.
It matters, in particular if you compile for 32-bit



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