Method and mobile terminal for reducing noise by double microphones (MICs)

Abstract

The invention discloses a method and a mobile terminal for reducing noise by double microphones (MICs), and relates to a communication technology. When the mobile terminal is in a call state, if contact events do not occur at a setting point in a touch area, and / or the angle between the long edge of the mobile terminal and a gravity line exceeds a set angle range, the incorrect holding gesture of a user can be determined, and a good double-MIC noise reduction effect can be achieved by regulating call audio parameters of the MICs of the mobile terminal.

Description

technical field [0001] The invention relates to signal processing technology, in particular to a double MIC noise reduction method and a mobile terminal. Background technique [0002] Multi-MIC (microphone) noise cancellation technology has been widely used in mobile terminals such as mobile phones, and its principle is as follows: figure 1 shown. Generally, a mobile phone with a noise-cancelling MIC has at least two MICs, one of which is the main MIC, which is closer to the user's mouth; the other is a noise-cancelling MIC, which is located on the back or top of the mobile phone and as far away from the main MIC as possible. [0003] The noise cancellation MIC captures the noise of the surrounding environment, and the mobile terminal performs noise cancellation processing on the audio data received by the main MIC according to the noise data. [0004] Specifically, since the propagation of sound is exponentially attenuated. It can be roughly understood that the sound pre...

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