Re: Gaussian vs uniform noise audibility (Julius Smith )


Subject: Re: Gaussian vs uniform noise audibility
From:    Julius Smith  <jos(at)CCRMA.STANFORD.EDU>
Date:    Fri, 23 Jan 2004 12:06:01 -0800

At 11:16 AM 1/23/2004, Eckard Blumschein wrote: >First of all, forget the wrong idea that the cochlea performs a complex >Fourier transform. This implies phase is discarded. However, phase information does exist as the phase of the basilar membrane vibration, which becomes the phase of the firing-rate modulation. Since basilar membrane filtering is generally modeled as linear, any corresponding short-time-Fourier-transform would have to be complex to model basilar membrane filtering. Subsequent half-wave rectification does not eliminate all phase information, although it would if subsequent smoothing were sufficient to eliminate all perceivable "ripple" in the time-domain envelope. -- Julius


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