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Working control method for earphone noise reduction and audio processor in terminal device

An audio processor and terminal equipment technology, applied in the field of communication, can solve the problems of ANC headset size, weight and cost increase, and achieve the effect of improving user experience and reducing costs

Active Publication Date: 2016-12-21
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the use of the above-mentioned earphones can achieve the purpose of noise reduction, the audio codec chip in the ANC earphones needs to be powered by a special power supply. Both cost and cost have increased compared to ordinary headphones

Method used

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  • Working control method for earphone noise reduction and audio processor in terminal device
  • Working control method for earphone noise reduction and audio processor in terminal device
  • Working control method for earphone noise reduction and audio processor in terminal device

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Embodiment Construction

[0086] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention.

[0087] Commonly used ANC headphones are divided into two types, one is hybrid (English: Hybrid) and the other is pure feedforward. Among them, in the purely feed-forward ANC earphones, a microphone for collecting noise will be installed outside each earphone, and the collected noise will be sent back to a chip with ANC processing capability (pure chip or audio codec (Code&Decode, referred to as : codec) chip can be), after performing reverse 180-degree noise processing, it will be sent back to the earphones to achieve the effect of active noise reduction.

[0088] figure 1 Shown is a simple feed-forward ANC headset noise reduction processing schematic Figure 1 , figure 2 Shown ...

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PUM

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Abstract

The invention provides a working control method for earphone noise reduction and an audio processor in a terminal device. Pins in a USB Type C interface are multiplexed, when the scheme provided by the invention is implemented, switch modules corresponding to the pins in the USB Type C interface are switched to ensure that the normal functions of the pins in the USB Type C interface are not influenced, a DMIC module in the terminal device is connected with a noise reduction microphone in an earphone by the pins in the USB Type C interface, in order to receive a noise reduction signal sent by the microphone through the DMIC module in the terminal device to realize the noise reduction processing of the terminal device on the earphone, and no additional audio processing chip or power supply needs to be added in the earphone, thereby effectively reducing the cost of the earphone, reducing the size and the weight of the earphone and effectively improving the user experience.

Description

technical field [0001] The present invention relates to communication technology, in particular to an earphone noise reduction work control method and an audio processor in a terminal device. Background technique [0002] With the emergence and popularization of various smart electronic devices, earphones have become a very important electronic device accessory in people's daily life. However, a noisy environment will greatly reduce the accuracy of people receiving sound information with earphones, especially for business people who travel frequently and take airplanes, office workers who squeeze subways and buses, and office workers in central air-conditioned rooms. Therefore, the demand for noise-canceling headphones is also growing rapidly. [0003] Active Noise Cancellation (abbreviated as: ANC) earphones are a kind of noise-canceling earphones. Different from ordinary earphones, ANC earphones have Reference microphone (Reference MIC, referred to as: Ref MIC) to collec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R3/00
CPCH04R3/00H04R5/033H04R5/04H04R2420/09G10L21/0264H04R3/04
Inventor 刘浩东孙凤宇梅伟
Owner HUAWEI TECH CO LTD
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