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Re: making a sound unrecognizable (the satanic trick)



Hi Ursula,

I'm looking for a possibility to change/edit a environmental or at
least natural sound in a way  that it is not any longer recognizable as
what it is, but, however, for doing this with changing as less acoustic
parameters as possible. ;-)  The intention is to use these sounds in a
MMN paradigm and it is important that  both "versions" of the sound are
acoustically as similar as possible.
The main point is that the sound (that can also be a more complex thing
as the sound of a barking dog or a something like that) should be not
possible to be recognized as what it is.

a good way to make a sound unrecognisable is to play it backward in time (see for example, the ASA demo cd). Acoustics parameters are untouched (although time reversed). It might not work for amplitude steady sounds (e.g. a food blender).


Ciao,
m
********************
Massimo Grassi - PhD
Laboratorio di Psicologia
Via Petracco 8 - 33100 Udine - Italy
http://www.psy.unipd.it/~grassi
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