[linux-audio-dev] Diode wave shaper (LADSPA plugin)?

[Jens M Andreasen]

On mån, 2004-08-16 at 10:54, Stanley Jaddoe wrote:
> Hi,
> 
> I'm trying to convert an existing analog (hardware) synth to an open source 
> softsynth.
> One of the components of the analog synth is a diode wave shaper. The 
> schematic is included (diode.jpg). The Inputs 2, 3, ... n and its resistors 
> are optional.
> 
> I'd like to know if there's a LADSPA plugin (or even better: a DSP IIR 
> recurrence relation) which emulates the included schematic as close as 
> possible. Unfortunately, I don't have the EE background required to do this 
> myself.

It's a function that converts from linear to S-shaped. It bounds
-infinity <--> +infinity to be within -1.0 <--> +1.0 with fairly linear
characteristics around zero.

> 
> Thanks in advance, 
> Stanley.