[sdiy] Top Octave Generators, beehiving and leakage

[Mike I]

That old  ETI- Powertran String-thing article by Tim Orr makes some mention
of the beehiving problem.

Funny to see that   "Key Click" and "Leakage" have become virtues    :D



----- Original Message -----
From: dragon.servicing <dragon.servicing at googlemail.com>
To: <synth-diy at dropmix.xs4all.nl>
Sent: Friday, May 02, 2008 2:25 PM
Subject: [sdiy] Top Octave Generators, beehiving and leakage


> Hi,
> I think that the background noise on the older organs is called
> Beehiving. some models have worse background noises than others. It
> seems it is quite hard to design an organ that has a low background
> noise. Dc switching ( electronic switching ) on the keyboards ( rather
> than switching the audio directly ) can help as you can then keep the
> audio signals away from other bits of wiring and circuitry.
> I think the leakage knob may be to simulate the effect of all the
> different tonewheels being together on a Hammond organ.
> ( the signal levels from the tonewheel generators are quite small, so
> there may be coupling ? effects between them) .
> regards Peter
>
>
>
> Dave Manley wrote:
> > Roy J. Tellason wrote:
> >>
> >> I'm thinking of all that background noise I used to hear in some of
> >> those organs I worked on....
> >>
> >> It's not at the outputs,  but all that stuff going on being picked up
> >> elsewhere,  particularly in any lower-level circuitry that's the
problem.
> >>
> >
> > In pursuit of emulation perfection, The VOCE tone-wheel modules give you
> > a 'Leakage' knob to set the level of all this buzzing crosstalk.
> >
> > http://www.voceinc.com/
> >
> > -Dave
>
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