He probably means "zero crossings": when the amplitude of the wave changes sign from + to - and back again. --Cy-- ----- Original Message ----- From: "Don" <pianotuna@yahoo.com> To: "Pianotech" <pianotech@ptg.org> Sent: Friday, January 06, 2006 8:02 PM Subject: Re: Cracking the unisons > Hi Bernard, > > What are "cero" crossings? > > At 02:51 AM 1/7/2006 +0100, you wrote: > >>counts cero crossings >>Bernhard > > Regards, > Don Rose, B.Mus., A.M.U.S., A.MUS., R.P.T.
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