A mobile terminal based on multi-unit speakers

Abstract

The present invention provides a mobile terminal communication active noise reduction system audio signal receiving device based on multi-unit speakers, which is used to receive the audio signal sent by the communication sender; The signal is in normal mode, or voice enhancement mode, or full noise reduction mode; the speaker device is used to play back the audio signal within the frequency response range through the speaker; the signal splitting circuit is used to split the original audio signal into sub-signal streams and transmit them For the speaker device; a signal amplifying circuit, used to send the transmitted audio signal to the corresponding speaker device, and amplify and output the audio signal. In this way, the voice communication quality with clearer background sound or background sound removal can be obtained.

Description

technical field [0001] The invention relates to a mobile terminal, in particular to the field of mobile terminal communication noise reduction. Background technique [0002] With the development of mobile communication equipment, some mobile terminals already have the function of active noise reduction during calls. As far as the current situation is concerned, except for the passive noise reduction design that is not very practical, the active noise reduction scheme of mobile terminals basically requires communication The microphone of the sender supports the noise reduction function, or the receiver performs algorithmic analysis and filtering on the received audio signal and then plays it back through the full-band speaker. [0003] However, there has not been an active noise reduction solution that does not rely on the support of the terminal equipment of the communication sender and does not require the terminal equipment of the receiver to perform complex processing on ...

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Problems solved by technology

[0003] However, there has not been an active noise reduction solution that does not rely on the support of the communication sender's terminal equipment and does not require the receiver's terminal equipment to perform complex processing on audio signals.

[0004] 1) Judging from the current technical solution, the noise reduction solution that relies on the microphone acquisition support of the communication sender requires the terminal equipment of both communication parties to support the noise reduction function at the same time, and the application range is obviously limited

[0005] 2) From the perspective of the technical solution based on the analysis and filtering of the audio signal by the receiving party, one is limited by the accuracy of the audio separation algorithm, which may cause excessive distortion of the audio signal; the other is limited by the processing speed of the mobile terminal chip , may introduce too much delay in the communication process; the third is that the complex processing process will occupy too many resources of the device, resulting in slow system response or significantly reduced battery life

[0006] 3) The current active noise reduction solutions for various mobile terminal devices basically use speakers with a full-band frequency response range for sound playback, or use multiple speakers, but the frequency response range of each speaker is basically the same , only serves to increase the volume

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