Subject: First moment of spectrum From: Pierre Divenyi <pdivenyi(at)MARVA4.NCSC.MED.VA.GOV> Date: Tue, 13 Jun 2000 13:41:40 -0700Sorry if I sounded rough -- it is way too hot a day here and, because it is not supposed to be, air conditioning is not a standard fixture. All I wanted to say that, if I understand the meaning of first moment correctly, there is an infinite number of spectra having an identical first moment. Jim Beauchamp's suggestion of including other measures, like the cepstrum and/or the jaggedness, is most appealing to me, especially if the frequency axis is transformed into a basilar-membrane distance axis (or Bark scale or mel scale, etc.). A psychophysicist would be extremely indebted to anyone coming out with a scale along which delta-first moments, or cepstral coefficients of a certain order, would be equally (or at least comparably) discriminable. Pierre Divenyi **************************************************************************** Pierre Divenyi, Ph.D. Experimental Audiology Research (151) V.A. Medical Center, Martinez, CA 94553, USA Phone: (925) 370-6745 Fax: (925) 228-5738 E-mail : pdivenyi(at)marva4.ebire.org ****************************************************************************