---------------------------- Original Message ---------------------------- Subject: Re: [music-dsp] Cheap spectral centroid recipe From: "Evan Balster" <e...@imitone.com> Date: Thu, February 18, 2016 1:55 pm To: music-dsp@music.columbia.edu -------------------------------------------------------------------------- > Anyway, that's why -- in spite of my extensive research in pitch tracking > -- I don't touch perception modeling with a ten-foot pole.� � that's sorta a self-contradiction. � "pitch" is a perceptual attribute of a tone or sound. "fundamental frequency" is a physical attribute. � "loudness" is a perceptual attribute. "amplitude" is a physical attribute. � "brightness" is a perceptual attribute. "spectral centroid" (however it's mathematically defined) is a physical attribute. � again, Evan, what i would like to hear from you is, given your offered algorithm for spectral centroid, if you play, say a piano into it, one note at a time, does C# have a 6% greater spectral centroid or 12% higher than C? �or less than 6%? � also, Evan, i would be very interested in hearing (or reading) what you might be willing to tell us about pitch detection or pitch tracking. �i realize you may be keeping this trade secret, but to the extent that you're willing to openly discuss even principles, if not algorithms, i would pay close attention. �(and i am not terribly stingy about knowledge assets.) � -- � � � r b-j � � � � � � � � �r...@audioimagination.com "Imagination is more important than knowledge." �
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