Re: AUDITORY Digest - 3 Apr 2007 to 4 Apr 2007 (#2007-81) ("Watson, Charles S." )


Subject: Re: AUDITORY Digest - 3 Apr 2007 to 4 Apr 2007 (#2007-81)
From:    "Watson, Charles S."  <watson@xxxxxxxx>
Date:    Thu, 5 Apr 2007 11:42:24 -0400
List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>

Bruno, Pierre and Volker, Espinoza-Varas and I found that the detection of changes in the durational structure of complex sounds, using a cued 2AFC procedure, was strongly dependent on familiarity with the specific sound (as contrasted with amount of training on the task in general, or with that class of sounds). We were using 1/2 sec ten-tone sequences and the task was to detect an increment in the duration of one of the tones. When the listeners were not familiar with the specific sequence (new sequence on each trial), training led to asymptotic thresholds of roughly the Weber ratio that Pierre mentioned, but based on the total pattern duration (thresholds of about 30-50 ms). When they were familiar with the specific pattern, the threshold reduced to the Weber ratio based on the duration of the single 50-ms target component (thresholds of about 5-7 ms). It took many hours of training to achieve that sort of performance, under either level of uncertainty. Best, Chuck Watson Espinoza Varas, B. and Watson, C.S. (1986). Temporal discrimination for single components of nonspeech patterns. J. Acoust. Soc. Am., 80, 1685 1694. -----Original Message----- From: AUDITORY - Research in Auditory Perception [mailto:AUDITORY@xxxxxxxx On Behalf Of AUDITORY automatic digest system Sent: Thursday, April 05, 2007 12:09 AM To: AUDITORY@xxxxxxxx Subject: AUDITORY Digest - 3 Apr 2007 to 4 Apr 2007 (#2007-81) There are 7 messages totalling 580 lines in this issue. Topics of the day: 1. The 31st International Audio Engineering Society Conference - REGISTRATION IS NOW OPEN 2. Two new chair positions at University of Manchester 3. perecption of durational variability (5) ---------------------------------------------------------------------- Date: Wed, 4 Apr 2007 14:50:08 +0100 From: Josh Reiss <josh.reiss@xxxxxxxx> Subject: The 31st International Audio Engineering Society Conference - REGISTRATION IS NOW OPEN (apologies if you receive multiple copies) The 31st International Audio Engineering Society Conference -=A0=20 "New Directions in High Resolution Audio" Queen Mary, University of London, f25th-27th, 2007.=A0=A0 REGISTRATION = IS NOW OPEN http://www.aes.org/events/31=20 Registration for the Conference is now open please use the weblink = http://www.aes.org/events/31/registration.htm to download the = registration forms and further information regarding accommodation. This Conference is concerned with the promotion and delivery of high = resolution audio, by maintaining quality throughout the recording and = playback chain with current and future technologies. It reflects the = tremendous recent growth of high resolution audio techniques and = products intended for use throughout the audio recording and playback = chain. However, issues remain on how to avoid bottlenecks where quality = is compromised, and how to maintain and encourage high resolution audio = in an ever changing marketplace. These concerns are of interest to the = audio engineering, recording and production industries, as well as to = education and academia. =20 DRAFT Programme=A0 (This programme is an early draft of the activities = for the conference and is expected to change) June 25th In the listening room Throughout the day - Demonstration of high resolution audio, Linn Audio High resolution recording issues I 9-10:30pm Paper number:=A0 43 Creating and Delivering High-Resolution Multiple 5.1 Surround Music = Mixes Paper number: XX Craig Bell,=A0 A digital amplification technology to optimise = performance with high-resolution audio. Paper number:=A0 12 Precision measurement of ADC effective number of bits using multi tones 10:30-11:00 Coffee Break Perception I 11:00-12:30pm=20 Paper number:=A0 69 Which of the two digital audio systems meets best with the analog = system? Paper number:=A0 34 A Comparative Study of the Performance of Spatialisation Techniques for = a Distributed Audience in a Concert Hall Environment Paper number:=A0 54 Perceptual Investigation into Envelopment, Spatial Clarity, and = Engulfment in Reproduced Multi-channel Audio Lunch, Posters and Exhibits 12:30-2:30pm Storage of high resolution audio 2:30-3:30pm Paper number:=A0 41 High Resolution Audio Recording, Preservation and Delivery at Indiana = University's Jacobs School of Music Paper number:=A0 48 MPEG-A Professional Archival Multimedia Application Format Panel Discussion=20 4:00-6:00pm Preparation, archiving and distribution of hi-res audio Reception=20 6:30-8:00pm June 26th In the listening room=20 Throughout the day- Demonstration of high resolution audio, Meridian = Audio Synthesis and Perception 9-10:30am Paper number:=A0 39 Musical Attractors: A new method for audio synthesis Paper number:=A0 45 Wavelet Based High Resolution Audio Texture Synthesis Paper number:=A0 63 Information reduction in artificial spatial sound through physical and = perceptual cartoonification Processing, manipulation and preparation of high resolution signals II 11-12:30pm Paper number 18 Horizontal plane HRTF reproduction using continuous Fourier-Bessel = functions Paper number:=A0 28 HRIR customization in the median plane via principal components analysis = of head-related impulse responses Paper number:=A0 31 The Generation of Panning Laws for Irregular Speaker Arrays Using = Heuristic Methods Lunch, Posters and Exhibits 12:30-2:30pm High resolution recording issues II - Microhones 2:30-3:30pm Paper number:=A0 52 System Configuration For High Quality Audio Capturing In A Large = Microphone Array Paper number:=A0 49 Digital Microphones for High Resolution Audio Panel Discussion=20 4:00-6:00pm Design Issues in High Quality Integrated Audio Systems Banquet 7:00-10:00pm June 27th In the listening room Throughout the morning- Demonstration of high resolution audio, Jeff = Levison, DTS Keynote Talk=20 9:00-10:00am Peter Craven Ambisonics 10:00-10:30am Paper number:=A0 17 The Design of Improved First Order Ambisonic Decoders by the Application = of Range Removal and Importance in a Heuristic Search Algorithm Processing, manipulation and preparation of high resolution signals I 11-12:30pm Paper number:=A0 68 The Effect of High Order Noise Shaping Filters on Dither in Delta-Sigma = Modulation Systems Paper number:=A0 47 Energy balance decision threshold in SDM systems Paper number:=A0 25 Segmented Dynamic Element Matching using Delta-Sigma Modulation Lunch, Posters and Exhibits 12:30-2:30pm Maintaining quality at playback 2:30-3:30pm Paper number:=A0 21 Achieving real bandwidth beyond 20 kHz with a loudspeaker system Paper number:=A0 53 All Digital High Resolution Class D Amplifier Designs using Power Supply = Feed-forward and Signal Feedback Panel Discussion=20 4:00-6:00pm The future of High Resolution Audio Throughout the conference Sound installation by The Illustrious Company Loudspeaker demonstration by Dyer Audio Original high resolution audio recordings Various demonstrations and exhibitions After the conference, June 28th C4DM presents -=20 an evening concert hosted by the Centre for Digital Music at Queen Mary, = University of London Free for all conference attendees Registration for the Conference is now open please use the weblink = http://www.aes.org/events/31/registration.htm=20 =A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 =A0 ------------------------------ Date: Wed, 4 Apr 2007 17:21:05 +0100 From: Colette Mckay <Colette.Mckay@xxxxxxxx> Subject: Two new chair positions at University of Manchester Dear everyone, The Audiology and Deafness group at Manchester University is undergoing str= ategic expansion and is THE place in the world to aspire to do your auditor= y research! We have two exciting chair position vacancies (one an entirely = new post). Please see adverts below. Please get in touch if you are interes= ted. regards, Colette ***************************************************** Professor Colette McKay Chair in Applied Hearing Science Audiology and Deafness Group School of Psychological Sciences University of Manchester Manchester M13 9PL Phone: +44 (0)161 3061671 Fax: +44 (0)161 2753373 colette.mckay@xxxxxxxx PA Wendy Spruce +44 (0)161 2758281 wendy.spruce@xxxxxxxx ******************************************************* THE UNIVERSITY OF MANCHESTER FACULTY OF MEDICAL AND HUMAN SCIENCES SCHOOL OF PSYCHOLOGICAL SCIENCES PHONAK RESEARCH CHAIR IN AMPLIFICATION AND REHABILTATIVE AUDIOLOGY (Ref:MHS/073/07) Salary will be by negotiation on the professorial scale This new Chair position has been created in partnership with Phonak AG, one= of the world's leading hearing instrument companies. You will have an est= ablished or emerging international profile in the field of audiology, psych= ology, hearing science, acoustics, engineering, or in one of the related di= sciplines, with an interest in amplification and rehabilitative audiology r= esearch. = The goal is to establish at the University of Manchester a world-class, wor= ld-leading research team in the area of amplification and rehabilitation fo= r adults with hearing impairment. The creation of the Phonak Chair is the f= irst step towards that goal. = = You will have strategic vision and show strong academic leadership, be ambi= tious, a good leader able to plan and execute clear strategies to achieve c= learly-identified goals, a team player, and a research leader able to bring= the best out of younger early-career researchers. Informal inquiries may be made to Professor John Bamford e-mail john.bamfor= d@xxxxxxxx or Professor Colette McKay e-mail colette.mckay@xxxxxxxx= er.ac.uk , telephone contact for both via +44 (0)161 275 8281. = Application forms and further particulars are available from our website ht= tp://www.manchester.ac.uk/vacancies = If you are unable to go online you can request a hard copy of the details f= rom The Directorate of Human Resources, Faculty of Medical and Human Scienc= es. Tel +44(0)161 275 8835 or email: mhs-hr@xxxxxxxx = Closing date: 8 June 2007 The University will actively foster a culture of inclusion and diversity an= d will seek to achieve true equality of opportunity for all members of its = community. THE UNIVERSITY OF MANCHESTER FACULTY OF MEDICAL AND HUMAN SCIENCES SCHOOL OF PSYCHOLOGICAL SCIENCES ELLIS LLWYD JONES CHAIR IN AUDIOLOGY (Ref: MHS/074/07) Salary will be by negotiation on the professorial scale You will have an international profile in the field of audiology, hearing s= cience, educational audiology/deaf education or other related field, or in = cognitive neuroscience, developmental psychology (or other area of psycholo= gy) as applied to hearing and hearing loss. This is a rare and exciting opp= ortunity for a committed and innovative individual to make a major contribu= tion to research and teaching in this field, and to influence strategic dev= elopments in the School of Psychological Sciences and the Audiology and Dea= fness group in a leading University with an ambitious vision of its future.= You will have strategic vision and show strong academic leadership, with th= e ability to develop the School's current research profile and enhance the = reputation of the School through promoting and delivering high quality rese= arch and teaching. The post is located within the School's Audiology and De= afness group, and within the Human Communication and Deafness Division, whi= ch also includes the MRC Hearing and Communication Group. Informal inquiries may be made to Professor John Bamford e-mail john.bamfor= d@xxxxxxxx or Professor Colette McKay e-mail colette.mckay@xxxxxxxx= er.ac.uk , telephone contact for both via +44 (0)161 275 8281. = Application forms and further particulars are available from our website ht= tp://www.manchester.ac.uk/vacancies = If you are unable to go online you can request a hard copy of the details f= rom The Directorate of Human Resources, Faculty of Medical and Human Scienc= es. Tel +44(0)161 275 8835 or email: mhs-hr@xxxxxxxx = Closing date: 8 June 2007. The University will actively foster a culture of inclusion and diversity an= d will seek to achieve true equality of opportunity for all members of its = community. ------------------------------ Date: Wed, 4 Apr 2007 18:08:55 +0100 From: Volker Dellwo <v.dellwo@xxxxxxxx> Subject: perecption of durational variability Dear list-members, I am looking for research on a very specific topic: I seem to remember that there is evidence for the hypothesis that listeners' ability to discriminate between the duration of two stimuli decreases with proportionally decreasing overall duration of the stimuli (i.e. increasing rate of the stimuli). I have spent hours and hours today looking for this and found millions of influential factors on the perception of duration but not this. Does anybody have an idea where to look for? Thanks in advance and best wishes, Volker -- -------------------------------------------- Volker Dellwo Department of Phonetics & Linguistics University College London phone: +44 (0)20 7679 5003 (internal: 25003) www.phon.ucl.ac.uk www.phonetiklabor.de -------------------------------------------- ------------------------------ Date: Wed, 4 Apr 2007 14:07:48 -0400 From: Bruno Repp <repp@xxxxxxxx> Subject: Re: perecption of durational variability --============_-1036412425==_ma============ Content-Type: text/plain; charset="us-ascii" ; format="flowed" Dear Volker: I believe you are referring to the finding that Weber's law, which holds approximately (though not precisely) for duration discrimination, breaks down at short durations, typically between 200 and 300 ms. A good review of findings on this topic is provided in Friberg, A., & Sundberg, J. (1995). Time discrimination in a monotonic, isochronous sequence. Journal of the Acoustical Society of America, 98, 2524-2531. Best, Bruno >Dear list-members, > >I am looking for research on a very specific topic: > >I seem to remember that there is evidence for the hypothesis that >listeners' ability to discriminate between the duration of two >stimuli decreases with proportionally decreasing overall duration of >the stimuli (i.e. increasing rate of the stimuli). > >I have spent hours and hours today looking for this and found >millions of influential factors on the perception of duration but >not this. Does anybody have an idea where to look for? > >Thanks in advance and best wishes, >Volker > > >-- >-------------------------------------------- >Volker Dellwo >Department of Phonetics & Linguistics >University College London > >phone: +44 (0)20 7679 5003 (internal: 25003) > >www.phon.ucl.ac.uk >www.phonetiklabor.de >-------------------------------------------- -- 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 --============_-1036412425==_ma============ Content-Type: text/html; charset="us-ascii" <!doctype html public "-//W3C//DTD W3 HTML//EN"> <html><head><style type="text/css"><!-- blockquote, dl, ul, ol, li { padding-top: 0 ; padding-bottom: 0 } --></style><title>Re: perecption of durational variability</title></head><body> <div>Dear Volker:</div> <div><br></div> <div>I believe you are referring to the finding that Weber's law, which holds approximately (though not precisely) for duration discrimination, breaks down at short durations, typically between 200 and 300 ms. A good review of findings on this topic is provided in</div> <div><br></div> <div><font face="Book Antiqua" color="#000000">Friberg, A., &amp; Sundberg, J. (1995). Time discrimination in a monotonic, isochronous sequence.<i> Journal of the Acoustical Society of America, 98,</i> 2524-2531.</font></div> <div><br></div> <div>Best,</div> <div>Bruno</div> <div><br></div> <div><br></div> <blockquote type="cite" cite>Dear list-members,<br> <br> I am looking for research on a very specific topic:<br> <br> I seem to remember that there is evidence for the hypothesis that listeners' ability to discriminate between the duration of two stimuli decreases with proportionally decreasing overall duration of the stimuli (i.e. increasing rate of the stimuli).<br> <br> I have spent hours and hours today looking for this and found millions of influential factors on the perception of duration but not this. Does anybody have an idea where to look for?<br> <br> Thanks in advance and best wishes,<br> Volker<br> <br> <br> --<br> --------------------------------------------<br> Volker Dellwo<br> Department of Phonetics &amp; Linguistics<br> University College London<br> <br> phone: +44 (0)20 7679 5003 (internal: 25003)<br> <br> www.phon.ucl.ac.uk<br> www.phonetiklabor.de<br> --------------------------------------------</blockquote> <div><br></div> <div><br></div> <x-sigsep><pre>-- </pre></x-sigsep> <div>Bruno H. Repp<br> Haskins Laboratories<br> 300 George Street<br> New Haven, CT 06511-6624<br> Tel. (203) 865-6163, ext. 236<br> Fax (203) 865-8963<br> http://www.haskins.yale.edu/staff/repp.html</div> </body> </html> --============_-1036412425==_ma============-- ------------------------------ Date: Wed, 4 Apr 2007 11:22:40 -0700 From: Pierre Divenyi <pdivenyi@xxxxxxxx> Subject: Re: perecption of durational variability Bruno and Volker,, Actually, Weber's law holds pretty well for durations down to about 20 ms. For filled and/or unfilled intervals, this has been shown by Chistovich (1959), Creelman (1962), Abel (1972), and Divenyi & Danner (1977), among others. However, it is true that for narrow-band time markers the Weber fraction increases at intervals shorter than about 100 ms. Pierre Divenyi ------------------------------ Date: Wed, 4 Apr 2007 14:34:20 -0400 From: Bruno Repp <repp@xxxxxxxx> Subject: Re: perecption of durational variability Hi Pierre: Were those data obtained in rhythmic contexts? What is your take on the data summarized by Friberg and Sundberg (1995)? They clearly show a discontinuity at 200-300 ms. --Bruno >Bruno and Volker,, > >Actually, Weber's law holds pretty well for durations down to about >20 ms. For filled and/or unfilled intervals, this has been shown by >Chistovich (1959), Creelman (1962), Abel (1972), and Divenyi & >Danner (1977), among others. However, it is true that for >narrow-band time markers the Weber fraction increases at intervals >shorter than about 100 ms. > >Pierre Divenyi -- 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 ------------------------------ Date: Wed, 4 Apr 2007 13:46:01 -0700 From: Pierre Divenyi <pdivenyi@xxxxxxxx> Subject: Re: perecption of durational variability Bruno, No, the data I was referring to were all collected using mostly 2AFC methods to compare two time intervals separated by a longer intertrial interval selected to avoid the impression of synchrony. Thus, the experiments had little if anything in common with Friberg's and Sundberg's study. Pierre At 11:34 AM 4/4/2007, Bruno Repp wrote: >Hi Pierre: > >Were those data obtained in rhythmic contexts? What is your take on >the data summarized by Friberg and Sundberg (1995)? They clearly >show a discontinuity at 200-300 ms. > >--Bruno ------------------------------ End of AUDITORY Digest - 3 Apr 2007 to 4 Apr 2007 (#2007-81) ************************************************************


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