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Method and device for detecting and correcting audio system input digital signals

A technology for inputting signals and digital signals, which is used in transducer circuits, sensors, electrical components, etc.

Active Publication Date: 2013-03-20
FUZHOU ROCKCHIP SEMICON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the common problems at present, the present invention proposes to perform a series of digital signal detection and correction of the digital signal before the digital signal is input into the system

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  • Method and device for detecting and correcting audio system input digital signals
  • Method and device for detecting and correcting audio system input digital signals

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Embodiment Construction

[0019] In order to describe the technical content, structural features, achieved goals and effects of the present invention in detail, the following will be described in detail in conjunction with the embodiments and accompanying drawings.

[0020] refer to figure 1 , is a functional block diagram of a device for detecting and correcting an input digital signal of an audio system in the first embodiment of the present invention.

[0021] A device for detecting and correcting input digital signals of an audio system, comprising a start-up module, a channel detection module 11, a POP sound detection module 21, a POP sound correction module 22, a DC bias detection module 31, a DC bias correction module 32, a gain The control module 41 and the channel correction module 12 .

[0022] The starting module is used to open the audio input channel. The sound channel detection module 11 is used to detect and judge whether the amplitudes of the input signals of the left and right channe...

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Abstract

The invention discloses a method and device for detecting and correcting audio system input digital signals. The method comprises detecting and judging whether amplitudes of left channel input signals and right channel input signals in a first preset time section change or not and sending correction signals when one channel changes; detecting and judging whether input signals of an effective channel in a second preset time section are POP sound or not and replacing the input signals to be mute or comfortable white noise and output the mute or comfortable white noise when the input signals are judged to be the POP sound; detecting and judging whether input signals of an effective channel in a third preset time section have direct current bias, and replacing the input signals to be mute or comfortable white noise and output the mute or comfortable white noise when the input signals have the direct current bias; processing speech signals or the white noise received by a gain control module and output signals of the effective channel; and using a sound channel correction module to evaluate the signals of the effective channel to the other channel with unchanged input signal amplitudes. The invention further discloses a device for detecting and correcting audio system input digital signals.

Description

technical field [0001] The invention relates to the field of digital signal detection and correction, in particular to a method and device for detecting and correcting an audio system input digital signal. Background technique [0002] The digital audio system is a necessary system module for any intelligent system at present, and it serves as an indispensable way for users to interact with terminal equipment. In traditional applications, there are many multimedia applications such as video playback and music playback. They all complete the process of transmitting multimedia audio content to users through the output part of the audio system. Therefore, most terminal devices pay more attention to the output signal of the audio system. audio indicators, such as signal-to-noise ratio, frequency response and other indicators, but the audio indicators of the input link of the audio system are often ignored. [0003] However, with the improvement of intelligent systems and voice ...

Claims

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Application Information

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IPC IPC(8): H04R3/00
Inventor 陈长海
Owner FUZHOU ROCKCHIP SEMICON
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