Patent ID: 11922093
Assignee: BEIJING XIAOMI MOBILE SOFTWARE CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G

Claim 11:
12. The audio device of claim 10, wherein each of the acoustic signals carries a sending time; the audio device comprises the microphone array; and
wherein the processor is further configured to:
in response to receiving the acoustic signal sent by the terminal at each of the different positions, determine a receiving time of the acoustic signal sent by the terminal at the position;
acquire a sending time carried in the acoustic signal sent by the terminal at the position;
determine, according to the receiving time and the sending time of the acoustic signal sent by the terminal at the position, the propagation duration of the acoustic signal sent by the terminal at the position; and
determine the propagation direction of the acoustic signal by using the microphone array.