Re: pitch strength algorithm? ("Beerends, J.G." )

Subject: Re: pitch strength algorithm?
From:    "Beerends, J.G."  <J.G.Beerends(at)KPN.COM>
Date:    Thu, 28 Sep 2000 14:01:09 +0100

Dear All, In 1989 I have written a paper that solved (more or less) the pitch problem mentioned by Pierre Divenyi. This paper was send to the JASA (MS89-008, William Yost) but not published (it was reviewed by Brian Moore). Its not available in electronic form, for people who want it I can send a paper copy. It also available in: 1) My dissertation. 2) IPO manuscript 674 ((Eindhoven The Netherlands, Jan. 1989) and in a simplified form in report 693 (with FORTRAN CODE). 3) Patent application 8900520 The Netherlands. 4) Patent application 9020044007 Europe. 5) Patent application 487462 USA, United States Patent 5,321,636, June 14, 1994. 6) Patent application 45984/90 Japan. 3)..6) Philips International B.V., Eindhoven, The Netherlands, March 1989. The basic idea of the solution is this: 1) represent each partial of each complex tone by a gaussian with Standard Deviations of Julius Goldstein stochastic pitch model 2) calculate from each partial stochastic subharmonic components with a SD derived from the partials 3) apply a renormalization on the joint subharmonic stochastic spectra representations to calculate the probabilities (or pitch strengths) of the pitches The algorithm is thus similar to the Subharmonic Summation method of Dik Hermes (JASA 1988 pp 257) but now it includes the stochastic nature of the subharmonics in order to be able to calculate pitch strengts. For the last 12 years I am not involved in pitch research anymore but to my knowledge no paper has been published with the above idea yet (I now work on speech/music quality, see e.g. ITU-T rec P.861, WWW.PSQM.COM or WWW.PESQ.ORG) John Beerends KPN Research -----Original Message----- From: Pierre Divenyi [mailto:pdivenyi(at)MARVA4.NCSC.MED.VA.GOV] Sent: Wednesday, September 27, 2000 20:34 To: AUDITORY(at)LISTS.MCGILL.CA Subject: pitch strength algorithm? Dear List, Here is a problem: There are _i_ of complex sinusoids, each with _n_sub_i_ components that are contiguous harmonics of different fundamental frequencies _f0_sub_i_ , starting at harmonic number _k_sub_i . The goal is to equate these complex sounds on the basis of their pitch strengths. What algorithm should be applied to achieve this goal? Thank you. 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) ****************************************************************************

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