Invention Grant
- Patent Title: Method and apparatus for retrieving audio file, server, and computer-readable storage medium
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Application No.: US16858493Application Date: 2020-04-24
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Publication No.: US11314805B2Publication Date: 2022-04-26
- Inventor: Jingyun Zhang , Hui Wang
- Applicant: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED
- Applicant Address: CN Shenzhen
- Assignee: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED
- Current Assignee: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED
- Current Assignee Address: CN Shenzhen
- Agency: Anova Law Group, PLLC
- Priority: CN201711173138.1 20171122
- Main IPC: G06F17/00
- IPC: G06F17/00 ; G06F16/632 ; G06F16/68

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.
Public/Granted literature
- US20200257722A1 METHOD AND APPARATUS FOR RETRIEVING AUDIO FILE, SERVER, AND COMPUTER-READABLE STORAGE MEDIUM Public/Granted day:2020-08-13
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