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|1. (WO2018133247) ABNORMAL SOUND DETECTION METHOD AND APPARATUS|
|Applicants:||HUAWEI TECHNOLOGIES CO., LTD.
|Title:||ABNORMAL SOUND DETECTION METHOD AND APPARATUS|
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.