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Re: "Reverse Engineering" of Sound Samples

Date1997-04-12 03:34
FromLawrence Troxler
SubjectRe: "Reverse Engineering" of Sound Samples
Hmm, SMS, perhaps? I don't have the URL handy but could find out.


--  Larry Troxler  --  lt@westnet.com  --  Patterson, NY USA  --
  

Date1997-04-12 04:20
From"Vadim V. Sytnikov"
Subject"Reverse Engineering" of Sound Samples
Some questions, if you please:

-- are there any works of Joseph Schillinger available on-line ?
-- tools / info on algorithmic composition [using Csound] ?
-- info on / tools for sound "reverse engineering" [using Csound] ?

I think, the very last item needs explanation. Suppose, you have just
recorded a sound with a mic, but want to have .ORC file rather than the
sound itself. One straightforward and quite obvious ( read -- ugly )
approach is to apply FFT to that sound, and then setup corresponding
number of sine generators in your .ORC file. Please, please, don't
object, I have plenty of objections myself.

The major is an inherent inability to SIGNIFICANTLY modify .ORC file in
such a way that the resulting sound would be instantly recognizable
( BY HUMAN -- not by spectrum analyzer ) as a "variant" of original
instrument. What I mean is that if the original sound is, say, FM-like,
all attempts to significantly modify its AM representation would fail.

What I need is a tool ( or an info -- I could build the tool myself )
which will, at least, give me A HINT: which instrument to fiddle with
from some set of pre-built ones. I think the task is not-so-crazy since
I don't need a perfect resemblance. AND, more important, I don't even
need to know instrument parameters' values -- just WHICH instrument.
Well, I don't really think there IS a tool, but any info/suggestions/
remarks will do.

Thank you in advance,
Vadim.