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Re: AUDITORY Digest - 3 Apr 2007 to 4 Apr 2007 (#2007-81)
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
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Sent: Thursday, April 05, 2007 12:09 AM
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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@xxxxxxxxxxxxxxx>
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@xxxxxxxxxxxxxxxx>
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@xxxxxxxxxxxxxxxx
PA Wendy Spruce
+44 (0)161 2758281
wendy.spruce@xxxxxxxxxxxxxxxx
*******************************************************
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@xxxxxxxxxxxxxxxx or Professor Colette McKay e-mail
colette.mckay@manchest=
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@xxxxxxxxxxxxxxxx =
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@xxxxxxxxxxxxxxxx or Professor Colette McKay e-mail
colette.mckay@manchest=
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@xxxxxxxxxxxxxxxx =
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@xxxxxxxxx>
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@xxxxxxxxxxxxxxxx>
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., &
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 & 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@xxxxxxxxx>
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@xxxxxxxxxxxxxxxx>
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@xxxxxxxxx>
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)
************************************************************