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Method and device for eliminating audio noise

A technology of audio noise and audio circuit, which is applied in the field of audio noise elimination method and device, can solve the problems of inability to eliminate audio noise, and achieve the effect of reducing charging time and eliminating audio noise

Active Publication Date: 2020-04-03
宜宾邦华智慧科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical problem in the related art that the audio noise in the audio signal cannot be simply eliminated, the present disclosure provides a method and device for eliminating audio noise

Method used

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  • Method and device for eliminating audio noise
  • Method and device for eliminating audio noise
  • Method and device for eliminating audio noise

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Embodiment Construction

[0052] Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with aspects of the invention as recited in the appended claims.

[0053] figure 1It is a flowchart of a method for eliminating audio noise according to an exemplary embodiment. Such as figure 1 As shown, the method includes the following steps:

[0054] In step 110, an audio signal is input from the input end of the audio circuit, and the capacitor connected to the input end of the audio circuit is charged through the input of the audio signal.

[0055] Wherei...

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Abstract

The invention discloses an eradicating method and device of audio noise. The eradicating method and device of the audio noise are applied to terminal equipment. The terminal equipment comprises an application processor and an audio circuit, the audio circuit comprises a capacitor and a power amplifier, one end of the capacitor is connected with the input end of the audio circuit, and the other end of the capacitor is connected with the power amplifier. An audio signal is input from the input end of the audio circuit, and the capacitor which is connected with the input end of the audio circuit is charged through the input of the audio signal. The application processor generates a working state control signal, and the working state of the power amplifier is controlled to be switched between a switch-on state and a switch-off state through the working state control signal. By switching the charging time for prolonging the capacitor, the voltage difference at the two ends of the capacitor is lowered, and thus the audio noise generated when the voltage difference at the two ends of the capacitor is too large is eradicated.

Description

technical field [0001] The present disclosure relates to the technical field of audio applications, in particular to a method and device for eliminating audio noise. Background technique [0002] For applications such as mobile phones or other terminal devices, audio plays an increasingly important role. A good audio design can make or break a product. Since the audio signal is an AC signal modulated on a DC voltage, in order to prevent the DC voltage in the audio signal from being mixed into the audio circuit, a capacitor is usually connected to the input of the power amplifier, and the DC voltage of the audio signal is eliminated through the capacitor. [0003] When an audio signal is input to the input terminal of the audio circuit, it charges the capacitor connected to the input terminal of the audio circuit. If the voltage difference between the two ends of the capacitor is too large, the speaker connected to the output terminal of the power amplifier will respond in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/16H04R3/00H04M1/19
CPCG06F3/165H04M1/19H04R3/00
Inventor 周奇马百晖
Owner 宜宾邦华智慧科技有限公司
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