Precautions for the design of the noise reduction microphone position of a smartphone

Microphone noise reduction chip supplier smart phone noise reduction microphone position design can effectively reduce the environmental noise interference around the phone, greatly improve the clarity of normal calls, but everything has two sides. Although the dual-microphone noise reduction technology can eliminate background noise to a certain extent, if there is a design problem, it will increase the cost of the mobile phone and affect the normal call of the mobile phone. For example, the distance between the main microphone and the noise reduction microphone is too close, or the parameters of the noise reduction algorithm are not adjusted properly, which may cause the volume of the mobile phone to be too low during a call. This requires microphone noise reduction chip suppliers to design a reasonable smartphone noise reduction microphone position and noise reduction algorithm, so that users can get a better call experience.

Is there any difference between the microphone noise reduction microphone design on the top and the back of the microphone noise reduction chip supplier? Why is there such a design? What is the difference between the noise reduction technologies of major manufacturers? In fact, there is no essential difference. It is just a matter of design. Even if the noise reduction microphone is designed on the back, it is usually on the top of the back. This is to prevent the user from accidentally blocking the microphone with his hand when making a call.

The reason why it is designed in the opposite direction of the microphone can be understood in principle. The principle of noise reduction in smartphones from microphone noise reduction chip suppliers is simple to understand, that is, the noise reduction microphone works at the same time as the main microphone, and the noise reduction microphone receives noise on the other side, and compares the sound transmitted by the real conversation microphone to get the overlapped part. It is noise, and then this part is removed through technical processing, and the voice of speech is successfully transmitted. Therefore, if the noise reduction microphone of the microphone noise reduction chip supplier is not set in the opposite direction, but very close to the main microphone of the mobile phone, then the two microphones receive the same content, and the noise reduction cannot be achieved.

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