The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 26, 2022
Filed:
Apr. 24, 2020
Tencent Technology (Shenzhen) Company Limited, Shenzhen, CN;
Jingyun Zhang, Shenzhen, CN;
Hui Wang, Shenzhen, CN;
TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED, Shenzhen, CN;
Abstract
A method for retrieving an audio file includes: collecting an audio segment in real time; and for every two chronologically adjacent audio frames in a plurality of audio frames of the audio segment, acquiring a difference value between spectral centroids of a sub-band corresponding to the two audio frames, to obtain a plurality of difference values; and obtaining an audio fingerprint corresponding to the two audio frames based on the plurality of difference values. A quantity of the plurality of difference values equaling a quantity of sub-bands of one of the two audio frames. Each bit of the audio fingerprint being determined based on a comparison between a difference value corresponding to the bit and a preset difference value threshold. The method also includes retrieving, in an audio file library based on audio fingerprints of the plurality of audio frames, a target audio file matching the audio segment.