Microphone noise reduction control method and device
A control method and microphone technology, which are applied in frequency/direction characteristic devices, speech analysis, instruments, etc., can solve the problems of limited noise reduction effect of microphones, reduced call quality, and reduced call sound, so as to improve the noise reduction effect of microphones. and call quality, avoid the interference of human factors, and have a good user experience
Active Publication Date: 2020-10-02
BYD CO LTD
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Problems solved by technology
However, if the user's mouth 2 is far away from the main microphone 3, the intensity of the speech signal when reaching the main microphone 3 and the auxiliary microphone 4 is almost the same, that is, Va≈Vb, at this time, Vm=(Va+Vn)-( Vb+Vn) ≈ 0, obviously, not only can not improve the call quality, but will even filter out the useful voice signal and make the call sound smaller
[0004] Obviously, a terminal with a microphone noise reduction system requires a higher distance from the user's mouth to the main microphone. Once the user's mouth is far away from the main microphone, the noise reduction effect of the microphone will be limited, and the call quality will even be reduced.
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[0057] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.
[0058] The microphone noise reduction control method, device and electronic equipment according to the embodiments of the present invention will be described below with reference to the accompanying drawings.
[0059] figure 2 It is a flowchart of a microphone noise reduction control method according to an embodiment of the present invention. This embodiment provides a microphone noise reduction control method, the execution body of which is a microphone noise reduction control device, and the execution body is composed of hardwa...
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The invention discloses a microphone noise reduction control method and device, and the method comprises the steps: determining the sound source direction of a user, and improving the sensitivity of amicrophone noise reduction system disposed in a terminal to the sound source direction; determining a call distance range between the user and the terminal; and determining the working mode of the microphone noise reduction system according to the call distance range. Therefore, switching of the working modes of the microphone noise reduction system can be automatically controlled, the microphonenoise reduction system is enabled to adapt to more environments and application scenes, the interference of human factors is avoided as much as possible, the microphone noise reduction effect and thecall quality are improved, and the user experience is good.
Description
technical field [0001] The present invention relates to the technical field of microphone control, in particular to a microphone noise reduction control method and device. Background technique [0002] At present, more and more terminals have a video and voice call function to meet people's requirements for video interaction. In order to improve the quality of video calls, more and more terminals are equipped with a microphone noise reduction system, which can effectively resist the environmental noise interference around the terminal and improve the clarity of normal calls. [0003] figure 1 An example of a terminal with a dual microphone noise reduction system. like figure 1 As shown, the terminal 1 is equipped with two microphones, one microphone is the main microphone 3, which is used to collect the user's voice signal, and the other microphone is the secondary microphone 4, which is used to collect the environmental noise around the terminal. During a normal convers...
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IPC IPC(8): H04R1/22G10L21/0216
CPCG10L21/0216G10L2021/02165H04R1/222
Inventor 陶涛
Owner BYD CO LTD