On Mon, Mar 08, 2004 at 01:57:24AM -0500, Dave Robillard wrote: > Are there any simple math plugins for LADSPA? Like, scaling of a > signal, sum of signals, dif of signals, etc. etc. > > As an example, I'd like to take the output of an envelope in the range > 0-1 and scale it by about 300 to make it appropriate for modifying > cutoff value. Fiddling with signals mathematically is fun anyway. > > I'm sure I could hack one out pretty easily, but if they already > exist...
GDAM includes a "MiniNetwork" graphical modular filter builder. There is a "math" element into which you can type any simple functions. There is also a "ladspapluginmaker" which will let you compile mininetworks into LADSPA plugins. I haven't used it in years, but it ought to be possible to compile any math function into a LADSPA filter this way. At least, you might find the mathfunction code useful as an example of parsing and executing math functions. -geoff
