16 Aug
2004
16 Aug
'04
8:05 a.m.
On Mon, 16 Aug 2004 10:54:04 +0200
Stanley Jaddoe <linux-audio-dev(a)terabytemusic.cjb.net> 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
Possibly, but I'm not too familiar with what is available in LADSPA.
(or even better: a DSP IIR recurrence relation)
Nope, not possible with a linear recurrence relationship.
which emulates the included schematic as close as
possible. Unfortunately, I don't have the EE background required to do this
myself.
Its actually rather simple (first year EE):
static inline double
diode_clip (double input, double clip_level /* should be positive */)
{ if (input > clip_level)
return clip_level ;
if (input < -clip_level)
return clip_level ;
return input ;
}
Erik
--
+-----------------------------------------------------------+
Erik de Castro Lopo nospam(a)mega-nerd.com (Yes it's valid)
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