Fw: analogue drum moduels

[David Krupicz]

----- Original Message -----
From: David Krupicz <dkrupicz at interlog.com>
To: Sam Hargreaves <S.Hargreaves1 at student.derby.ac.uk>
Cc: <synth-diy at mailhost.bpa.nl>
Sent: Saturday, December 04, 1999 2:16 PM
Subject: Re: analogue drum moduels


>
> ----- Original Message -----
> From: Sam Hargreaves <S.Hargreaves1 at student.derby.ac.uk>
> To: <synth-diy at mailhost.bpa.nl>
> Sent: Thursday, December 02, 1999 7:16 AM
> Subject: analogue drum moduels
>
>
> > hello synth-diy
> > My names Sam i'm a third year student at Derby university
> > England. For my third year project i'm researching and hopeing to
> > build an analogue drum synth moduel. the research is going well i
> >
> > i'm first going to concentrate on the snare drum so if any one has
> > any idears or opinions they would be greatfully recieved.
>
> I've created some 'analogue' drum sounds using the software synth
> Reactor from Native Instruments, and what you need for a good snare
> is a noise oscillator, a VCO, a VCA, a VCF and two envelope generators
> ( Decay - Release type will suffice)
>
> Basically, the percussive 'hit' of the snare is provided by the noise
> generator, passed through the filter.  The cutoff frequency of the
> filter should start off at the highest frequency (it's a lowpass resonant
> filter BTW...) and decay rather quickly.   This is what you use the first
> EG for... The resonance of the filter can be adjusted by a pot to get a
> suitable tone...
>
> A snare drum also has a 'resonant' component of a particular pitch
> (not to be confused with the resonance of a VCF) which is provided by
> the VCO.  The pitch of the VCO varies slightly in the same manner as the
> cutoff freq of the filter.  (You can use the same EG for both, and trim
the
> levels with
> two independant pots.
>
> Now run both the filtered noise and the VCO through a VCA controlled by
the
> second envelope generator, and trigger both EG's with the same gate
signal,
> tweak the knobs until you get an acceptable electronic snare.
>
> It won't sound exactly like a real snare drum, but that's not the point is
> it?  Anyway,
> it's a lot easier than it sounds, especially if you do it all in software
> with Reactor... :)
>
>
>
>