Subject: Re: How much is needed for sound identification ? From: Bruno Repp <repp@xxxxxxxx> Date: Fri, 14 Sep 2007 11:27:37 -0400 List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>Hi Jim: Isn't that a test of sound discrimination rather than identification? Best, Bruno >I did a follow-up to the 1993 paper that Brian mentions and in that >follow-up I used the gated stimulus paradigm. >I further chose stimulus alternatives that had been confused in the >initial identification study. >After presenting the pair of sounds that had been confused, the >subjects then heard one of the sounds with duration increased in 50 >ms increments. Very little of the sound was needed to make the >choice between which of the pair was being heard. > >The paper was presented at ICAD 94, and I can scan it and send it to >anyone who would want it. > >The results are very task specific--the listeners could quickly >adopt a strategy to focus on an initial acoustic difference between >the pair and once they heard this cue, make their judgement. > >However, Guillaume et al (ICAD 2004, available at >http://icad.org/websiteV2.0/Conferences/ICAD2004/posters/guillaume_etal.pdf) >also using a gated paradigm found that very little of the sound is >needed. > >Jim > > > > > >-----Original Message----- >>From: Sylvain Cl=E9ment [mailto:sylvain.clement@xxxxxxxx >>Sent: Thursday, September 13, 2007 06:49 AM >>To: AUDITORY@xxxxxxxx >>Subject: How much is needed for sound identification ? >> >>Dear List members, >> >>We are currently running several experiments on environmental >>sounds identification vs image identification. >> >>The literature in hearing seems to be quite poor whereas a lot of >>work have been done in the visual domain. >> >>Does anybody have know studies that tried to measure how long of a sound= > > > >> >is needed to get the identification of the sound ("it's a bird") or get = >> > >> >it's super-ordonate category ("it's an animal") ? >>> >>> >>>Thanks in advance for any references. >>> >>> >>>Sylvain Cl=E9ment >>>Neuropsychology & Auditory Cognition Team >>>Lille, France >>> >>>-- >Sylvain CLEMENT (MCF) >>>JE Neuropsychologie et Cognition Auditive (JE 2497) >>>UFR de Psychologie >>>BP 60149, Universite Ch. de Gaulle Lille 3 >>>Domaine universitaire "Pont de Bois" >>>59 653 Villeneuve d'ascq Cedex >>>FRANCE >>> >>>tel : (03 20 41) 64 42 >>>http://nca.recherche.univ-lille3.fr >>> >> > >----=_vm_0011_W8530210911_5801_1189686045 >Content-Type: text/html; charset="iso-8859-1" >Content-Transfer-Encoding: quoted-printable > ><html><br> >Ballas (1993) measured identification of environmental sounds that were t= >runcated to 700 ms. He found they were quite well identified, but h= >e did not measure the time course - rather he measured reaction time, whi= >ch varied quite a bit.<br><br><font size=3D"-1"><font size=3D"3"><b>Balla= >s</b>, J. A. "Common Factors in the Identification of an Assortment of <b= > >> >Brief</b> Everyday <b>Sounds</b>." <b>J</b>. Exp. Psych.: Hum. Percep. = >> >& Perf. 19 (1993): 250--26<br></font><br></font>In my environmental s= >tudies I have tried to edit sounds so that they were the briefest possibl= >e duration and still easily identifiable in pilot studies. I found = >quite a range of times needed - some complex events, like a bowling ball = >rolling down a lane, or a tree falling, have quite extended times courses= >(> 3 s) needed to provide all the information necessary.<br><br>There= >was a study involving time course of identification of environmental sce= >nes that was presented at a conference. I am away from the office u= >ntil next week, but I can provide the link then.<br><br>Brian Gygi<br><br= > >> ><br><br> >> > >-- >James A. Ballas, Ph.D. > >Naval Research Laboratory >Code 5585 >Washington, DC 20375-5337 >tel: 202-404-7988 >cell: 571-245-3019 >fax: 202-767-1122 >SIPR: ballas@xxxxxxxx > > >Attachment converted: Macintosh HD:smime.p7s (eApp/CSOm) (001182D1) -- Bruno H. Repp Haskins Laboratories 300 George Street New Haven, CT 06511-6624 Tel. (203) 865-6163, ext. 236 Fax (203) 865-8963 http://www.haskins.yale.edu/staff/repp.html