Subject: Re: perceptual segregation of sound From: Douglas Creelman <creelman@xxxxxxxx> Date: Thu, 4 May 2006 15:58:42 -0400This is a multi-part message in MIME format. --------------010007050107000900070403 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit With regard to whether we can "process" more than one acoustical signal simultaneously, the discussion should take account of a couple of early demonstrations that people can listen for more than one frequency at the same time, as though they were paying attention to two separate auditory "filters" tuned to attend to each. The relatively small loss in detectability in such a case corresponds to the added "noise" in the alternative channel while both are attended. The data are incompatible with any model involving time-switching between channels: Green, D.M. (1961) JASA , 33 897-903 and Creelman, C.D. (1960) JASA, 32, 805-810. Doug Creelman -- C. Douglas Creelman 416-690-9407 (phone & fax) 9 Fernwood Park Ave. creelman@xxxxxxxx Toronto, ON Canada M4E 3E8 --------------010007050107000900070403 Content-Type: text/html; charset=us-ascii Content-Transfer-Encoding: 7bit <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta content="text/html;charset=ISO-8859-1" http-equiv="Content-Type"> <title></title> </head> <body bgcolor="#ffffff" text="#000000"> With regard to whether we can "process" more than one acoustical signal simultaneously, the discussion should take account of a couple of early demonstrations that people can listen for more than one frequency at the same time, as though they were paying attention to two separate auditory "filters" tuned to attend to each. The relatively small loss in detectability in such a case corresponds to the added "noise" in the alternative channel while both are attended. The data are incompatible with any model involving time-switching between channels:<br> Green, D.M. (1961)<u> JASA</u> , <u>33</u> 897-903 and Creelman, C.D. (1960) <u>JASA</u>, <u>32</u>, 805-810.<br> Doug Creelman<br> <pre class="moz-signature" cols="72">-- C. Douglas Creelman 416-690-9407 (phone & fax) 9 Fernwood Park Ave. <a class="moz-txt-link-abbreviated" href="mailto:creelman@xxxxxxxx">creelman@xxxxxxxx</a> Toronto, ON Canada M4E 3E8</pre> </body> </html> --------------010007050107000900070403--