AW: making a sound unrecognizable

[Stefan Kerber <kerber@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>]

Dear Ursula,

a procedure for neutralizing the meaning of sound was proposed by Fastl.
Look at:

Neutralizing the meaning of sound for sound quality evaluations.
In: Proc. 17. ICA Rome, CD ROM (2001).

Fastl, H.: Features of neutralized sounds for long term evaluation.
In: Proc. Forum Acusticum Sevilla 2002,
NOI-04-003-IP, CD-ROM (2002)

Hellbrück, J., Fastl, H., Keller, B.: Effects of meaning of sound on
loudness judgements.
In: Proc. Forum Acusticum Sevilla 2002,
NOI-04-002-IP, CD-ROM (2002)

Ellermeier, W., Zeitler, A., Fastl, H.: Predicting annoyance judgments from
psychoacoustic metrics: Identifiable versus neutralized sounds.
In: Proc. inter-noise 2004 (2004)

Greetings
Stefan Kerber




-----Ursprüngliche Nachricht-----
Von: AUDITORY Research in Auditory Perception
[mailto:AUDITORY@xxxxxxxxxxxxxxx]Im Auftrag von Ursula Kirmse
Gesendet: Dienstag, 12. September 2006 18:26
An: AUDITORY@xxxxxxxxxxxxxxx
Betreff: making a sound unrecognizable


Dear list members,

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.

I would be very happy about ideas or would like know if maybe somebody
has already tried something like this?  I would also be very happy about
recommations for software or matlab scripts that could be helpful in
respect to this. For example I'm looking for a way to transfer the
amplitude envelope from one sound to another (I already wrote a matlab
routine for this, but its not yet functioning perfectly fine and the
result is not completely convincing).

So if anybody has a an idea I would be grateful.

best regards and thanks a lot,
Ursula Kirmse

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Ursula Kirmse
University of Leipzig
Cognitive & Biological Psychology
Institute of Psychology I
Seeburgstrasse 14-20
04103 Leipzig, Germany
Phone +493419735978/Fax +493419735969
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