AW: Threshold of increasing/decreasing tones (Stefan Kerber )


Subject: AW: Threshold of increasing/decreasing tones
From:    Stefan Kerber  <kerber@xxxxxxxx>
Date:    Thu, 16 Feb 2006 13:43:24 +0100

I use tones which continuously increase / decrease in level. The tones differ in the speed (from 3dB/sec to 15 dB/sec) with which level rises / falls. The thing i observe is that thresholds get much more underestimated for decreasing tones than they get overestimated by tones with rising level. Thats why i am wondering if effects like priming or the continuity effect could account for these differences. Greetings Stefan -----Ursprüngliche Nachricht----- Von: AUDITORY Research in Auditory Perception [mailto:AUDITORY@xxxxxxxx Auftrag von Bernhard Laback Gesendet: Donnerstag, 16. Februar 2006 12:07 An: AUDITORY@xxxxxxxx Betreff: Re: Threshold of increasing/decreasing tones Dear Stefan, Do you intend to use a continuous tone decreasing/increasing in level or to present sequences of short stationary tones, for which the level decreases/increases from tone to tone. These two situations are likely to differ with respect to the effects referred to by John Neuhoff and Massimo Grassi. Regards, Bernhard Massimo Grassi wrote: > Dear Stefan, > >> 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? > > > there are few other references that might be interesting for you (see > below). > (1), (2) and (3) concerns subjective duration [(1) and (2) use sounds > longer/much longer than 200-ms whereas (3) uses sounds of duration < > 200-ms]. > (4) concerns loudness. > > 1) Grassi, M., Darwin, C. J. (in press). The subjective duration of > ramped and > damped sounds. Perception & Psychophysics. (ask me a draft if you need it) > > 2) Grassi, M. (2003). Differenza nella durata percettiva di suoni > crescenti o > calanti in intensitŕ: permanenza o decurtamento? Giornale Italiano di > Psicologia, 30, 659-663. (in English the title sounds like: "Subjective > duration of ramped and damped sounds: ringing or echo?") > > 3) Schlauch, R. S., Ries, D. T., & DiGiovanni, J. J. (2001). Duration > discrimination and subjective duration for ramped and damped sounds. > Journal of > the Acoustical Society of America, 109, 2880-2887. > > 4) Small, A. M. (1977). Loudness perception of signals monotonically > changing > sound pressure. Journal of the Acoustical Society of America, 61, > 1293-1297. > > Ciao, > m > ******************** > Massimo Grassi - PhD > Laboratorio di Psicologia > Via Petracco 8 - 33100 Udine - Italy > http://www.psy.unipd.it/~grassi > IMPORTANT! BEFORE SENDING REGULAR > MAIL PLEASE SEND AN EMAIL > > ---------------------------------------------------------------------- > SEMEL (SErvizio di Messaging ELettronico) - CSIT -Universita' di Udine > > -- *************************** Bernhard Laback, Ph.D. Acoustics Research Institute Austrian Academy of Sciences Reichsratsstrasse 17 A-1010 Wien Austria Tel.: 0043-1-4277-29514 Fax.: 0043-1-4277-9295 http://www.kfs.oeaw.ac.at/ ***************************


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