Patent ID: 11902761
Assignee: BOE TECHNOLOGY GROUP CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A sound producing device, comprising: a recognition element, a directional sound production element and a control element; wherein,
the recognition element is connected with the control element and is configured to acquire information relating to a person in a preset range and transmit the acquired information relating to the person to the control element; and
the control element is connected with the directional sound production element and is configured to acquire a corresponding audio signal according to the acquired information relating to the person and control the directional sound production element to send out a sound wave according to the audio signal,
wherein the information relating to the person comprises a total number of persons and positions of the persons with respect to the sound producing device,
the control element is configured to calculate the corresponding audio signal according to the number of the persons and the positions of the persons with respect to the sound producing device, with the audio signal comprising frequencies and delays of sound waves transmitted from sound production sensors in the directional sound production element,
wherein the control element is configured to control the frequencies of the sound waves transmitted from the sound production sensors in the directional sound production element based on an acoustic parametric array method, to adjust the directivity of the sound wave sent out from the directional sound production element, and control the delays of the sound waves transmitted from the sound production sensors in the directional sound production element based on an acoustic phased array method, to adjust a propagation direction and a coverage area of the sound wave sent out from the directional sound production element, so that the sound wave sent out from the directional sound production element covers all the persons in the preset range.