Subject: Basilar Membrane; slightly wrong number? From: "reinifrosch@xxxxxxxx" <reinifrosch@xxxxxxxx> Date: Wed, 11 Jan 2012 14:07:59 +0000 List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>------=_Part_2390_16530808.1326290879496 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Dear colleagues, With great pleasure I just re-read the contribution of Nigel Cooper,"Radial Variation in the Vibrations of the Cochlear Partition" in the Proceedings of the International Symposium on Recent Developments in Auditory Mechanics", H. Wada et al., Eds., World Scientific, 2000, pp. 109-115. I tried to derive myself the formula y = 323*(x^2/16 - ...) in Figure 4. I agree with the expression in brackets, but suspect that the number 323 should be replaced by 320. That yields an area of 1.0 between the beam center-line and the x-axis, and so a mean displacement of 1.0. (Yesterday I tried to contact Nigel privately, without success). With best wishes, Reinhart Frosch, CH-5200 Brugg. reinifrosch@xxxxxxxx . ------=_Part_2390_16530808.1326290879496 Content-Type: text/html;charset="UTF-8" Content-Transfer-Encoding: 7bit <html><head><style type='text/css'> <!-- div.bwmail { background-color:#ffffff; font-family: Trebuchet MS,Arial,Helvetica, sans-serif; font-size: small; margin:0; padding:0;} div.bwmail p { margin:0; padding:0; } div.bwmail table { font-family: Trebuchet MS,Arial,Helvetica, sans-serif; font-size: small; } div.bwmail li { margin:0; padding:0; } --> </style> </head><body><div class='bwmail'><FONT size=2>Dear colleagues,<BR></FONT> <P><FONT size=2>With great pleasure I just re-read the contribution of Nigel Cooper,"Radial Variation in the Vibrations of the Cochlear Partition" in the Proceedings of the International Symposium on Recent Developments in Auditory Mechanics", H. Wada et al., Eds., World Scientific, 2000, pp. 109-115. I tried to derive myself the formula y = 323*(x^2/16 - ...) in Figure 4. I agree with the expression in brackets, but suspect that the number 323 should be replaced by 320. That yields an area of 1.0 between the beam center-line and the x-axis, and so a mean displacement of 1.0. </FONT></P> <P><FONT size=2>(Yesterday I tried to contact Nigel privately, without success).</FONT></P> <P><FONT size=2>With best wishes,</FONT></P> <P><FONT size=2>Reinhart Frosch,<BR>CH-5200 Brugg.<BR>reinifrosch@xxxxxxxx . </FONT></P></div></body></html> ------=_Part_2390_16530808.1326290879496--