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environmental non-noises



Dear List members,

We are currently working on an experiment about the semantical processing of environmental noises. We are trying to do a similar task as the lexical decision task with words and nonwords, but with environmental noises and "non-noises". The problem is that we have a hard time creating non-noises which are quite environmental noise-like, but are not recognizable. We tried almost every distortion methods used in the literature (reversing, spectrally-rotating, scrambling the parts) but the sounds are always pretty much recognizable by most people.
Does anyone have any idea on how to create such non-recognizable non-noises based on existing environmental noises? Or is this idea just not feasible, because people will always think that what they heard is something real?
Thanks,
Ferenc Honbolygó


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Ferenc Honbolygó

Research Institute for Psychology, HAS
Department of Psychophysiology
Research Group of Developmental Psychophysiology
H-1394 Budapest, P.O.Box 398.

Web: http://humlab.cogpsyphy.hu/
E-mail: hf@xxxxxxxxxxxx
Tel:     +361 354-2390
Fax:    +361 354-2416