Subject: Re: [linux-audio-dev] Diode wave shaper (LADSPA plugin)?
From: Stanley Jaddoe (linux-audio-dev_AT_terabytemusic.cjb.net)
Date: Mon Aug 16 2004 - 20:09:10 EEST
On Monday 16 August 2004 18:23, Jens M Andreasen wrote:
> Now please tell us, what is this synth of yours that you have
> disassembled? Is this circuit part of the output-stage or is it part of
> the individual oscillators? Inquiring minds wants to know!
It's the TR-909 drum machine.
For the Bass Drum part, the wave shaper converts the triangle output of a VCO
to a sine.
For the Rim Shot part, it's in the output stage, where three sine waves of
three different oscillator are mixed (that's why I had three inputs in the
schematic of my first post) and shaped.
For the Snare Drum, Low-, Mid- and High Toms, diode clippers are being used to
transform triangle waves to sine waves.
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