US Patent Issued to The Nielsen Company (US) on March 24 for "Methods and apparatus to extract a pitch-independent timbre attribute from a media signal" (California Inventor)

ALEXANDRIA, Va., March 24 -- United States Patent no. 12,586,554, issued on March 24, was assigned to The Nielsen Co. (US) LLC (New York).

"Methods and apparatus to extract a pitch-independent timbre attribute from a media signal" was invented by Zafar Rafii (Berkeley, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Methods and apparatus to extract a pitch-independent timbre attribute from a media signal are disclosed. An example apparatus includes an audio characteristic extractor to determine a logarithmic spectrum of an audio signal; transform the logarithmic spectrum of the audio signal into a frequency domain to generate a transform output; determine a magnitude of the transform output; and determ...