Methods and apparatus to extract a pitch-independent timbre attribute from a media signal

Abstract

Methods and apparatus to classify media based on a pitch-independent timbre attribute from a media signal are disclosed. An example apparatus includes an interface to receive a media signal; a timbre database to store reference pitch-less timbre spectrums; and a processor to: compare a pitch-less timbre spectrum of the media signal to the reference pitch-less timbre spectrums; and classify the media signal based on data corresponding to a reference pitch-less timbre spectrum of the reference pitch-less timbre spectrums that matches the pitch-less timbre spectrum, the classification corresponding to at least one of an instrument or a genre.

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