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Re: Threshold of increasing/decreasing tones

Dear Stefan!
This exact approach is used in a recent Masters Thesis by Mike Magill at our department.
I could email you a pdf if you are interested.

Best Regards,

Anders Genell Doctoral Student Department of Applied Acoustics Chalmers University of Technology Gothenburg Sweden

Den 2006-02-15 16:17:31 skrev Stefan Kerber <kerber@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>:

Dear list

I am trying to determine masked threshold by the following procedure:
Subjects hear a masking noise in which a tone linearly increases/decreases
in level. The task of the subjects is to press a button when they first hear
/ no more hear the tone. Out of this response I try the calculate masked
threshold and compare it to thresholds determined by usual procedures.
Now my questions: Is anybody on the list aware of work which deals with the
masked threshold of in level increasing / decreasing tones? Are there some
studies which followed a similar approach? Is anybody aware of effects due
to the direction of level change, especially can a lowered threshold for
decreasing tones be caused by some kind of "continuity" or "priming" effect?

Thanks in advance
Stefan Kerber

Stefan Kerber
Lehrstuhl für Mensch Maschine Kommunikation
AG Technische Akustik
Technische Universität München

Adress: Arcisstr. 21, 80290 München
Phone: +49 (0)89 289-28539
Fax:   +49 (0)89 289-28535
Home: http://www.mmk.ei.tum.de/~kes