[sdiy] transducers

[CCartCat at aol.com]

In a message dated 11/9/04 12:26:30 PM, richard at skydancer.com writes:


> At 07:02 09/11/2004 -0800, Metrophage wrote:
> >Ok, I'll provide some fuel for your ignorance! >;]P
> >
> >On the simple side, there are:
> >
> >Karplus, K., and A. Strong. 1983. "Digital synthesis of plucked string
> >and drum timbres." Computer Music Journal 7(2):43-55, MIT Press
> >
> >Jaffe, D.. and J. Smith. 1983. "Extensions of the Karplus-Strong
> >plucked string algorithm." Computer Music Journal 7(2):43-55, MIT Press
> 
> Karplus Strong isn't so much a physical model as a physical analogy. It's
> hugely simplified compared to what happens in a real string, which is part
> of a real set of strings, somewhere near a real soundboard, in the real 
> world.
> 
> It's also not a good reverb model.
> 
> And - worse still - it's a DSP technique. ;)
> 
> If you want a spring reverb, the simplest way to make one is buy a long
> piece of drain pipe, run a long spring along the middle, fit a cheap
> speaker at one end and a mike at the other. It'll sound - unusual - but
> most spring reverbs sound less than stellar, so at least you'll have
> something original.
> 
> You can also buy a reverb tank - most guitar amp makers stock them as
> spares for their own units - and build a simple driver circuit around it.
> 
> If you want a *good* reverb, that's a whole other issue. Some familiarity
> with convolution reverbs probably wouldn't hurt at that point.
> 
> Or you can go find a large space and tile it. That will work too.
> 
> Richard
> 

Ignorantly piggybacking on the above:

Yeah, for a digital version of a spring reverb, how about using the sound of 
an impulse thru a spring reverb in a convolution reverb?   Do different spring 
reverbs.   Get really weird with other springs/strings (as previously 
mentioned)/resonant objects.

No doubt done to death already in some major music lab, but why should 
whitecoats have all the fun?

Okay, back to lurking,
Kevin Seward
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