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1. (WO2018133247) ABNORMAL SOUND DETECTION METHOD AND APPARATUS

Pub. No.:    WO/2018/133247    International Application No.:    PCT/CN2017/082415
Publication Date: Fri Jul 27 01:59:59 CEST 2018 International Filing Date: Sat Apr 29 01:59:59 CEST 2017
IPC: H04R 29/00
Applicants: HUAWEI TECHNOLOGIES CO., LTD.
华为技术有限公司
Inventors: MA, Hua
马骅
WU, Yuanyou
吴元友
QIU, Cunshou
仇存收
SUN, Jianhua
孙建华
Title: ABNORMAL SOUND DETECTION METHOD AND APPARATUS
Abstract:
An abnormal sound detection method and apparatus (02). The method comprises: acquiring a first speech signal played by a sound output device (03) of a terminal device (01), the first speech signal being locally stored in the terminal device (01), and the first speech signal comprising audio information with an irregularly changing frequency (101, 301, 401, 501); obtaining a residual signal according to a reference speech signal acquired in advance and the first speech signal, the residual signal comprising a part of the first speech signal that is different from the reference speech signal (102, 304, 404); and determining, according to the residual signal, whether there is an abnormal sound in the first speech signal so as to determine whether the sound output device is abnormal (103). The speech signal represents a real use scenario of a user, and frequency points are triggered repeatedly together in an actual frequency band of the speech during an entire playing process of the speech signal, facilitating discovery of a problematic frequency point. The speech signal itself represents actual frequency points to undergo detection, and the probability of missing a problematic frequency point is greatly reduced. The detection method is convenient and universal, and has an accurate detection result.