Subject: Re: PITCH DETECTION PROBLEM SOLVED From: "Alain de Cheveigne'" <Alain.de.Cheveigne(at)IRCAM.FR> Date: Sat, 19 Jul 2003 23:25:02 +0200At 11:04 -0700 18/07/03, soundmathtech.com wrote: >I would like to re-iterate once more that, in our opinion, all >conventional methods >of pitch detection (e.g. correlation-, spectrum- or cepstrum-based) are >not viable anymore: >they cannot even approach the level of robustness and generality >demonstrated by our new method. This is a strong claim. How is it substantiated? The paper you cite does not report any formal evaluation. I read the paper. Setting aside the notions of "state space embedding" and "chaos theory" and looking at the operations that the algorithm performs, it appears that the method is not radically different from an earlier method such as AMDF. True, a number of features distinguish it from that method, but I see no reason to think that they are in its favor. Maybe I missed something. The code provided on the web page (matlab p-files) doesn't work on my system, so I couldn't do any actual testing. If you can provide matlab m-files I will. Alain -- Alain de Cheveigne' Ircam - CNRS, 1 place Igor Stravinsky, 75004, Paris, FRANCE. email: Alain.de.Cheveigne(at)ircam.fr, phone: +33 1 44 78 48 46