US Patent Issued to Gracenote on Feb. 25 for "Methods and apparatus for harmonic source enhancement" (California Inventor)

ALEXANDRIA, Va., Feb. 26 -- United States Patent no. 12,236,931, issued on Feb. 25, was assigned to Gracenote Inc. (New York).

"Methods and apparatus for harmonic source enhancement" was invented by Zafar Rafii (Berkley, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Methods and apparatus for harmonic source enhancement are disclosed herein. An example apparatus includes an interface to receive a media signal. The example apparatus also includes a harmonic source enhancer to determine a magnitude spectrogram of audio corresponding to the media signal; generate a time-frequency mask based on the magnitude spectrogram; and apply the time-frequency mask to the magnitude spectrogram to enhance a harmonic ...