Subject: Re: HC selectivity ... was Re: Physiological models of cochlea activity - alternatives to the travelling wave From: Bob Masta <audio@xxxxxxxx> Date: Fri, 28 Sep 2007 08:24:35 -0400 List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>On 28 Sep 2007 at 12:55, Matt Flax wrote: <snip> > With respect to a hair cell at rest ... take the following general > values for membrane resistance and capacitance : > R= 40 Meg Ohms ... taken from [4] for example > C= 1 pF ... taken from [5] for example > The first order cut-off frequency would be about 25 kHz. > fc=25 kHz. How do you obtain this 25 kHz value? Using f = 1 / (2 * pi * R * C) I come up with about 4 kHz. Best regards, Bob Masta D A Q A R T A Data AcQuisition And Real-Time Analysis www.daqarta.com Scope, Spectrum, Spectrogram, Signal Generator Science with your sound card!