Phase-control multichannel sound wave directional emission method and system

A directional emission, multi-channel technology, applied in ultrasonic/sonic/infrasonic transmission systems, transmission systems, sound-generating devices, etc., can solve problems such as inability to realize multi-channel and inability to transmit ultrasonic waves

Pending Publication Date: 2021-01-12
傅建玲
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The device does not need to mechanically rotate the ultrasonic emitting array when changing the ultrasonic direction, but it can only emit in one d

Method used

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  • Phase-control multichannel sound wave directional emission method and system
  • Phase-control multichannel sound wave directional emission method and system
  • Phase-control multichannel sound wave directional emission method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0088] Example 1. As attached to the manual Figure 12 shown. A set of phase-controlled multi-channel sound wave directional emission system is placed on the desktop. The cylindrical object 201 in the figure is the target detection module; the default emission mode of the system is focus mode; the system detects whether there is a virtual target in the human-computer interaction module or the external information receiving module Information, in this embodiment, there is no virtual target information; the system detects that there are 4 targets around through the target detection module, which are respectively the left ear and the right ear of user A, and the left ear and right ear of user B. The left and right ears of user A transmit the left channel audio and right channel audio of audio A that user A needs to hear, and transmit the left channel of audio B that user B needs to hear to the left and right ears of user B Audio and right channel audio, and user A and user B ca...

Embodiment 2

[0089] Embodiment 2, as specification attached Figure 13shown. In the desktop environment, the left and right channel audio is transmitted to the left and right ears of the user through the ultrasonic array, which can prevent the audio that the user needs to hear from spreading to the surrounding space, causing privacy leakage and causing noise to other users. Laptops, tablet computers, and mobile phones are placed in sequence on the same desktop. The laptops, tablet computers, and mobile phones each have a set of phase-controlled multi-channel sound wave directional emission systems, and there is a user for each of these three devices. In the phase-controlled multi-channel sound wave directional emission system of the notebook computer, 301 is the target detection sensor sub-module deployed in the target detection module of the notebook computer, and its coordinate system is X1-Y1-Z1, and the sub-tables 302 and 303 are deployed The ultrasonic sub-array between the keyboard ...

Embodiment 3

[0090] Embodiment 3, as specification attached Figure 14 shown. In the multi-person large space scene, a set of phased multi-channel sound wave directional emission system is installed in the top space. The cylindrical shape 401 in the figure represents the target detection sensor sub-module of the system, and other modules are integrated into the ultrasonic emission sub-array. , 402, 403, 404, 405, 406, and 407 are ultrasonic transmitting sub-arrays integrated with power amplifiers respectively, and 402~407 together constitute a transmitting execution module. Assuming that there are 3 users, after the phased multi-channel sound wave directional emission system is started, the default emission mode is in focus mode; the 3 users can use the human-computer interaction module to set their own sound effects; the system first detects the human-computer interaction module or external information Whether there is virtual target information in the receiving module, in this embodimen...

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Abstract

The invention discloses a phase-control multichannel sound wave directional emission method and system; and the method comprises the steps: receiving virtual target information through a man-machine interaction module or an external information receiving module, transmitting the virtual target information to a target detection module, enabling the target detection module to detect whether there are actual targets in an environment or not, and further detecting the types of the targets, the number of targets and the spatial positions of all targets; transmitting an audio signal needing to be transmitted to a modulation module through sound effect conversion, and enabling the modulation module to modulate an ultrasonic carrier signal through the audio signal subjected to sound effect signalconversion and then transmitting the modulated ultrasonic carrier signal to a transmission control module; enabling the transmitting control module to divide the transmitting array into sub-arrays corresponding to the targets according to the number of the targets and the spatial positions of the targets, calculating the transmitting delay required by each ultrasonic transmitter in the sub-arraysaccording to a phase control method, and after the transmitting delay, transmitting the modulated ultrasonic carrier signal through each ultrasonic transmitter in the transmitting sub-array.

Description

technical field [0001] The invention relates to the technical field of consumer electronics, in particular to a method and system for directional emission of phase-controlled multi-channel sound waves. Background technique [0002] In daily work and life, people need to reduce noise interference when listening to specific sounds, and at the same time need to ensure privacy when listening to sounds. At present, people generally solve the above problems by wearing earphones, but whether it is an in-ear earphone or an earmuff earphone, wearing it for a long time will cause ear fatigue, and due to the structural weight of the earphone itself and the winding of the earphone power cord and audio cable, when wearing the earphone Head movement is inconvenient. There is a directional emission sound in the prior art, and the sound emitted by it can be transmitted directionally, and the user can hear the sound only when the user is in the sound emission path. In order for the user to...

Claims

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Application Information

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IPC IPC(8): G10K11/34H04B11/00
CPCG10K11/346H04B11/00
Inventor 傅建玲
Owner 傅建玲
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