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Voice processing circuit, mobile terminal and voice processing method

A voice processing and mobile terminal technology, applied in the electronic field, can solve the problems of voice distortion, discontinuity, and attenuation of voice components, and achieve the effect of avoiding voice distortion and discontinuity.

Inactive Publication Date: 2017-01-11
VIVO MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Embodiments of the present invention provide a voice processing circuit, a mobile terminal and a voice processing method to solve the problem that the existing technology cannot capture current noise and other unsteady noises in real time, and that the voice components will be attenuated while filtering out the background noise. Speech distortion and stuttering issues

Method used

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  • Voice processing circuit, mobile terminal and voice processing method
  • Voice processing circuit, mobile terminal and voice processing method

Examples

Experimental program
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Effect test

no. 1 example

[0022] Embodiments of the present invention provide a voice processing circuit, such as figure 1 As shown, the voice processing circuit includes:

[0023] A microphone module 3, a resistor R and an audio processing chip 1, the difference between the resistance value of the resistor R and the DC impedance of the microphone module 3 is within a preset range;

[0024] One end of the microphone module 3 is connected to the first audio input end ADC1 of the audio processing chip 1, and one end of the resistor R is connected to the second audio input end ADC2 of the audio processing chip 1. The other end of the group 3 and the other end of the resistor R are connected to a common ground;

[0025] Wherein, the audio processing chip 1 is configured to perform denoising processing on the first signal input from the first audio input terminal ADC1 according to the second signal input from the second audio input terminal ADC2.

[0026] The speech processing circuit of the embodiment of...

no. 2 example

[0036] An embodiment of the present invention provides a mobile terminal, including the above-mentioned voice processing circuit, so that the mobile terminal of the embodiment of the present invention can not only filter out the steady-state noise floor generated when the circuit is working, but also filter out the noise in real time. The printed circuit board layout limits the coupling current acoustic interference introduced, and will not attenuate the voice components, greatly restores the real voice, and realizes high-fidelity recording and voice calls, thereby improving the user experience and increasing the product market. Competitiveness.

no. 3 example

[0038] An embodiment of the present invention provides a voice processing method, which is applied to the above-mentioned voice processing circuit. Such as figure 2 As shown, the method includes:

[0039] Step 201: The audio processing chip acquires a first signal collected by the first audio input terminal and a second signal collected by the second audio input terminal.

[0040] Wherein, the first signal is acquired through microphone module acquisition, and the second signal is acquired through resistance acquisition. Since the difference between the resistance value of the resistor and the impedance value of the microphone module is within a preset range, the amplitude of the second signal will be relatively close to the amplitude of the first signal, and the second signal includes not only the mobile terminal The steady-state noise floor on the circuit of the mobile terminal, but also includes the non-stationary interference noise generated on the circuit of the mobile...

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Abstract

The invention provides a voice processing circuit, a mobile terminal and a voice processing method. The voice processing circuit comprises a microphone module, a resistor and an audio processing chip. The difference between the resistance of the resistor and the DC impedance of the microphone module is in a preset range. One end of the microphone module is connected with the first audio input end of the audio processing chip. One end of the resistor is connected with the second audio input end of the audio processing chip. The other end of the microphone module and the other end of the resistor are connected with common ground, wherein the audio processing chip is used for performing de-noise processing on a first signal that is input by the first audio input end according to a second signal that is input by the second audio input end. The voice processing circuit, the mobile terminal and the voice processing method realize a fact that de-noise processing on voice signals is not restricted by layout of a printed circuit board. Furthermore the voice processing circuit, the mobile terminal and the voice processing method settle problems of incapability of capturing nonsteady noise such as current sound in real time, voice component attenuation in filtering bottom noise, voice distortion and voice interruption in prior art.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a voice processing circuit, a mobile terminal and a voice processing method. Background technique [0002] With the continuous development of electronic technology, the functions of mobile terminals are becoming more and more powerful, smart phones are becoming thinner and thinner, and the layout of circuit board components is becoming more and more compact. Various circuit modules are integrated together, such as charging module, radio frequency module, earphone module, antenna module, etc. These circuits will interfere with each other, such as the problem of current sound sent by the microphone, which is due to the power amplifier of 2G communication. Generates 217Hz interference. Among them, if the reference ground of the power amplifier of the 2G communication and the reference ground of the main mic or the headphone mic share backflow, it will cause the 217Hz signal to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L21/0216H04M1/19
CPCG10L21/0216G10L2021/02165H04M1/19
Inventor 游利文
Owner VIVO MOBILE COMM CO LTD
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