[sdiy] Real piano keyboards: any use?

[David G. Dixon]

Ah.  I get it.  It's an AR.

David G. Dixon
Professor
Department of Materials Engineering
University of British Columbia
309-6350 Stores Road
Vancouver, B.C. V6T 1Z4
Canada
 
Tel 1-604-822-3679
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> -----Original Message-----
> From: synth-diy-bounces at dropmix.xs4all.nl [mailto:synth-diy-
> bounces at dropmix.xs4all.nl] On Behalf Of cheater cheater
> Sent: Thursday, January 29, 2009 12:27 PM
> To: synth-diy at dropmix.xs4all.nl
> Subject: Re: [sdiy] Real piano keyboards: any use?
> 
> An AR is a non-symmetric LPF that you put a gate into and get an AR
> envelope out of.[1]
> 
> An assymmetric LPF is an LPF where the 'slew rate'*is set separately
> for rising and falling signals.
> 
> *(actually: time coefficients)
> 
> [1] That's why different gate designs make your synth sound
> differently. It's all in the transient!
> 
> Cheers
> D.
> 
> On Thu, Jan 29, 2009 at 8:15 PM, David G. Dixon
> <dixon at interchange.ubc.ca> wrote:
> >> It does indeed!
> >> I think the best way to achieve this kind of control is to have a
> >> continuous optic distance sensor. This can give you acceleration
> >> output and position output.
> >> Imagine having a synth style keyboard with the position going to the
> >> volume of the voice, and the speed going (through a non-symmetric LPF
> >> with a long release) to the volume of the suboctave. This would be a
> >> great lead/pad patch.
> >
> > Did you mean "non-symmetric AR" as in fast attack, long release?  What
> is a
> > non-symmetric LPF?
> >
> >
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