Subject: Re: What do we hear in High frequency hearing From: "Didier A. Depireux" <didier(at)ISR.UMD.EDU> Date: Thu, 7 Nov 2002 14:53:33 -0500On Thu, 7 Nov 2002, Brian Gygi wrote: > Although it's certainly possible that some information from > 20 kHz is > audible through bone conduction or standing waves or just healthy cochlea, > what is it exactly that people are hearing in that range? I don't understand the 'paradox' here. You can hear the difference between an impulsive sound low-passed below 20 kHz and low-passed below 26 kHz. That does not mean that you should be able to hear a pure tone, ramped up slowly, at +/-24 kHz. It would be the case only if the cochlea performed an exact Fourier tranform... Didier -- Didier A Depireux ddepi001(at)umaryland.edu didier(at)isr.umd.edu 685 W.Baltimore Str http://neurobiology.umaryland.edu/depireux.htm Anatomy and Neurobiology Phone: 410-706-1272 (off) University of Maryland -1273 (lab) Baltimore MD 21201 USA Fax: 1-410-706-2512