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公开(公告)号：US20190115044A1
公开(公告)日：2019-04-18
申请号：US16216771
申请日：2018-12-11
Applicant: ALIBABA GROUP HOLDING LIMITED
Abstract: A method for audio recognition comprises: dividing audio data to be recognized to obtain a plurality of frames of audio data; calculating, based on audio variation trends among the plurality of frames and within each of the plurality of frames, a characteristic value for each frame of the audio data to be recognized; and matching the characteristic value of each frame of the audio data to be recognized with a pre-established audio characteristic value comparison table to obtain a recognition result, wherein the audio characteristic value comparison table is established based on the audio variation trends among the frames and within each of the frames of sample data.
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2.发明申请公开(公告)号：US20190187264A1
公开(公告)日：2019-06-20
申请号：US16274450
申请日：2019-02-13
Applicant: ALIBABA GROUP HOLDING LIMITED
CPC classification number: G01S11/14 , G01S3/8083 , G01S5/22 , G01S5/30 , G01S15/34
Abstract: A method for determining a change in a distance, a location prompting method and an apparatus and a system thereof are provided. The method includes: sending, by a receiving terminal, a paring request to a server for the server to forward the paring request to a transmitting terminal, and to allocate a frequency band for the receiving terminal and the transmitting terminal after the transmitting terminal accepts the paring request; acquiring, by the receiving terminal, an acoustic wave signal of a frequency sent by the transmitting terminal, wherein the frequency is determined by the transmitting terminal based on the allocated frequency band; determining, by the receiving terminal, a change in the acquired acoustic wave signal; and determining, by the receiving terminal, a change in a distance between the transmitting terminal and the receiving terminal according to the change in the acquired acoustic wave signal.
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