Bite-induced pitch shift? (Bob Masta )

Subject: Bite-induced pitch shift?
From:    Bob Masta  <masta(at)UMICH.EDU>
Date:    Thu, 19 Jun 2003 15:45:27 -0400

Dear List: In the June 9 issue of Electronic Design <> analog electronics guru Bob Pease mentions that when he bites down hard "on some tough nuts or a popcorn cake, the pitch seems to dip momentarily by about half a note". Has anyone heard of a phenomenon like this? (The effect doesn't seem to work for me, at least not when biting down on a plastic toothbrush handle.) He wonders what can cause this. If this is truly a pitch shift and not a resonance envelope (formant) shift due to distorting the ear canal, could it be deforming the cochlea such that the stiffness of the basilar membrane is changed? Seems pretty extreme! Any ideas? Robert Masta tech(at) D A Q A R T A Data AcQuisition And Real-Time Analysis Shareware from Interstellar Research

This message came from the mail archive
maintained by:
DAn Ellis <>
Electrical Engineering Dept., Columbia University