Audio processing system and method based on echo suppression switch in voice detection

A technology of voice detection and echo suppression, which is applied in the field of IP network communication, can solve the problems of characteristic damage and poor sound reproduction, and achieve the effects of eliminating necessary echo, reducing echo suppression, and reducing sound damage

Active Publication Date: 2018-05-18
HANGZHOU XUJIAN SCI & TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

While removing the feature of audio stream A, it must also destroy the feature of local audio A in audio stream C, resulting in the audio stream D’s sound restoration of local sound B being worse than that of audio stream C

Method used

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  • Audio processing system and method based on echo suppression switch in voice detection
  • Audio processing system and method based on echo suppression switch in voice detection

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Embodiment Construction

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

[0045] Such as figure 2 Shown: The first purpose of the present invention is to provide a switching audio processing system based on voice detection echo suppression to reduce damage to local sound by the echo suppression module and improve the sound quality of the transmitted network audio stream.

[0046] Audio stream A is the received network audio stream.

[0047] The audio stream A2 is the audio stream after the audio stream A is processed by the attenuator module 3 .

[0048] Audio stream C collects sound for the local pickup, including local sound B and echo audio.

[0049] The echo is generated when the audio stream A2 is played through the speaker.

[0050] The audio stream D is the audio stream C processed by the echo suppression module 5 .

[0051] The audio st...

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Abstract

The invention provides an audio processing system and method based on echo suppression switch in voice detection. The system comprises a local voice detection module, a network voice detection module,an attenuator module, a switch module, an echo suppression module, a speaker and a pickup device. When the local voice detection module determines a local voice, and the network voice detection module determines no voice in the network through a voice detection method, the switch module forwards an audio stream C not passing through the echo suppression module to an audio stream E, so as to reduce distortion of the audio stream E, the attenuator module is started to attenuate an audio stream A, so as to prevent the audio stream A, the background noise, from inhibiting the network to send theaudio stream E, further, slight background sound of the audio stream A received by the network is kept. Through adoption of the system and method, the local voice processing process eliminates necessary echo and reduces echo suppression, so that the voice is less damaged, and the sound quality of the network audio stream E sent locally is improved.

Description

technical field [0001] The invention relates to the technical field of IP network communication, in particular to an audio processing system and method based on voice detection echo suppression switching. Background technique [0002] Due to the delay of the IP network in IP network calls, it is an inevitable choice to add an echo suppression module and a clearing module. Such as figure 1 As shown, the basic principle of echo suppression is to analyze the characteristics of the received network audio stream A, and then collect the audio stream C from the pickup. The audio stream C is the audio mixed with the local sound B and the echo (audio stream A). The echo suppression module is based on the previous Analyze the characteristics of the audio stream C and audio stream A, and finally obtain the audio stream D to be sent over the network. While removing the characteristics of the audio stream A, it will also inevitably destroy the characteristics of the local audio A in th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04M9/08G10L21/0208
CPCG10L21/0208G10L2021/02082H04M9/082
Inventor 陈尚武金国庆
Owner HANGZHOU XUJIAN SCI & TECH CO LTD
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