Subject: Re: maximal hearable speed of pulses From: "Dennis P. Phillips" <Dennis.Phillips@xxxxxxxx> Date: Wed, 17 May 2006 12:28:06 -0300--============_-1064242809==_ma============ Content-Type: text/plain; charset="us-ascii" ; format="flowed" Hello Len: It is a somewhat complicated question that you are asking. If pulses are narrow enough, it is likely that subjects can tell one pulse from a pulse pair with less than a millisecond between the pulses in the pair - although it is by no means clear that the listeners are actually resolving the pulses in the pair. The subjects may well be perceiving one member of the comparison (single vs dual pulses) as a "splat " sound and the other as a"split" sound. When it comes to individuating closely-spaced clicks or pulses, 10-12 clicks/sec is perhaps close to the upper limit. At higher pulse rates, a train of pulses tends to be perceived as a single "buzz," with the individual elements not easily resolved or countable or even accurately localized. Phillips, D.P. & Hall, S.E. 2001 JASA, 110: 1539-1547. Boehnke, S.E, & Phillips, D.P. 2005 Perception, 34: 371-377. I hope that this helps. All kind wishes, Dennis P. Phillips >Hello everyone, > > >I am looking for any results on experiments that give a minimal time >between events so that the human ear can still hear two sperate >events. >At an interval of 50ms, people hear a tone instead of sperate beats, >maybe that is common knowledge but I would like to read a bit more >on the subject. > >People seem to be very interested in investigating the frequencies >we can hear, and I can find many articles dealing with this subject, >but I would like to know more about the hearable speed of pulses, >e.g. when does fast tapping on a snaredrum become a drumroll... > >Does anyone know any articles on this matter or is maybe currently >involved in any research around the subject? > > >Thanks in advance, >-Len -- ------------------------------------- Dennis P. Phillips, Ph.D. Killam Professor in Psychology Department of Psychology Dalhousie University 1355 Oxford Street Halifax, NS, Canada B3H 4J1 Phone: (902) 494-2383 Fax: (902) 494-6585 E-mail: Dennis.Phillips@xxxxxxxx ------------------------------------- --============_-1064242809==_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: maximal hearable speed of pulses</title></head><body> <div><font face="Arial" color="#000000">Hello Len:</font><br> <font face="Arial" color="#000000"></font></div> <div><font face="Arial" color="#000000">It is a somewhat complicated question that you are asking. If pulses are narrow enough, it is likely that subjects can tell one pulse from a pulse pair with less than a millisecond between the pulses in the pair - although it is by no means clear that the listeners are actually resolving the pulses in the pair. The subjects may well be perceiving one member of the comparison (single vs dual pulses) as a "splat " sound and the other as a"split" sound.</font></div> <div><font face="Arial" color="#000000"><br> When it comes to individuating closely-spaced clicks or pulses, 10-12 clicks/sec is perhaps close to the upper limit. At higher pulse rates, a train of pulses tends to be perceived as a single "buzz," with the individual elements not easily resolved or countable or even accurately localized.<br> <br> Phillips, D.P. & Hall, S.E. 2001 JASA, 110: 1539-1547.<br> Boehnke, S.E, & Phillips, D.P. 2005 Perception, 34: 371-377.<br> <br> I hope that this helps. All kind wishes,<br> <br> Dennis P. Phillips</font><br> <font face="Arial" color="#000000"></font></div> <div><br></div> <div><br></div> <blockquote type="cite" cite>Hello everyone,<br> <br> <br> I am looking for any results on experiments that give a minimal time between events so that the human ear can still hear two sperate events.<br> At an interval of 50ms, people hear a tone instead of sperate beats, maybe that is common knowledge but I would like to read a bit more on the subject.<br> <br> People seem to be very interested in investigating the frequencies we can hear, and I can find many articles dealing with this subject, but I would like to know more about the hearable speed of pulses, e.g. when does fast tapping on a snaredrum become a drumroll...<br> <br> Does anyone know any articles on this matter or is maybe currently involved in any research around the subject?<br> <br> <br> Thanks in advance,<br> -Len</blockquote> <div><br></div> <div><br></div> <x-sigsep><pre>-- </pre></x-sigsep> <div><font color="#0000FF">-------------------------------------</font></div> <div><font color="#0000FF">Dennis P. Phillips, Ph.D.</font></div> <div><font color="#0000FF">Killam Professor in Psychology</font></div> <div><font color="#0000FF">Department of Psychology<br> Dalhousie University</font></div> <div><font color="#0000FF">1355 Oxford Street<br> Halifax, NS, Canada B3H 4J1</font></div> <div><font color="#0000FF"><br> Phone:<x-tab> </x-tab>(902) 494-2383<br> Fax: <x-tab> </x-tab>(902) 494-6585<br> E-mail: Dennis.Phillips@xxxxxxxx</font></div> <div><font color="#0000FF">-------------------------------------</font></div> </body> </html> --============_-1064242809==_ma============--