<HTML><FONT FACE=arial,helvetica><HTML><FONT COLOR="#000000" FACE="Geneva" FAMILY="SANSSERIF" SIZE="2"><BR>
In a message dated 11/9/04 12:26:30 PM, richard@skydancer.com writes:<BR>
<BR>
<BR>
<BLOCKQUOTE CITE STYLE="BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px" TYPE="CITE"></FONT><FONT COLOR="#000000" FACE="Geneva" FAMILY="SANSSERIF" SIZE="2">At 07:02 09/11/2004 -0800, Metrophage wrote:<BR>
>Ok, I'll provide some fuel for your ignorance! >;]P<BR>
><BR>
>On the simple side, there are:<BR>
><BR>
>Karplus, K., and A. Strong. 1983. "Digital synthesis of plucked string<BR>
>and drum timbres." Computer Music Journal 7(2):43-55, MIT Press<BR>
><BR>
>Jaffe, D.. and J. Smith. 1983. "Extensions of the Karplus-Strong<BR>
>plucked string algorithm." Computer Music Journal 7(2):43-55, MIT Press<BR>
<BR>
Karplus Strong isn't so much a physical model as a physical analogy. It's<BR>
hugely simplified compared to what happens in a real string, which is part<BR>
of a real set of strings, somewhere near a real soundboard, in the real world.<BR>
<BR>
It's also not a good reverb model.<BR>
<BR>
And - worse still - it's a DSP technique. ;)<BR>
<BR>
If you want a spring reverb, the simplest way to make one is buy a long<BR>
piece of drain pipe, run a long spring along the middle, fit a cheap<BR>
speaker at one end and a mike at the other. It'll sound - unusual - but<BR>
most spring reverbs sound less than stellar, so at least you'll have<BR>
something original.<BR>
<BR>
You can also buy a reverb tank - most guitar amp makers stock them as<BR>
spares for their own units - and build a simple driver circuit around it.<BR>
<BR>
If you want a *good* reverb, that's a whole other issue. Some familiarity<BR>
with convolution reverbs probably wouldn't hurt at that point.<BR>
<BR>
Or you can go find a large space and tile it. That will work too.<BR>
<BR>
Richard<BR>
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<BR>
Ignorantly piggybacking on the above:<BR>
<BR>
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.<BR>
<BR>
No doubt done to death already in some major music lab, but why should whitecoats have all the fun?<BR>
<BR>
Okay, back to lurking,<BR>
Kevin Seward<BR>
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