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Visual intercom echo processing system for building

A technology for processing systems and echoes, which is used in closed-circuit television systems, two-way sound reinforcement telephone systems, etc. Experience and optimize the effect of codec

Inactive Publication Date: 2015-04-22
珠海太川云社区技术股份有限公司
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned building intercom echo processing methods have the following problems and defects: 1. It is inconvenient to need a hand-held intercom
2. It is inconvenient to manually operate the voice transmission direction

Method used

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  • Visual intercom echo processing system for building
  • Visual intercom echo processing system for building

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Embodiment Construction

[0021] Such as figure 1 , figure 2 As shown, the present invention may include a plurality of video intercom terminals and adopt Ethernet networking mode. The video intercom terminal includes a central processing unit 1 and a power supply unit 2 electrically connected to the central processing unit 2 and Ethernet. The network control unit 3, the camera 4, the display screen 5, the input unit 6, the audio codec 7, and the microphone 8 and the speaker 9 electrically connected to the audio codec 7, the central processing unit 1 is provided with an embedded System, the embedded system includes an audio receiving module 11, a synchronization module 12, an echo cancellation module 13, an audio encoding module 14, an audio decoding module 16, an audio playing module 17, and a sending module 15, where:

[0022] The audio receiving module 11 is used to receive the encoded and compressed audio stream;

[0023] The synchronization module 12 is used to synchronize data between th...

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Abstract

The invention provides a visual intercom echo processing system for a building. According to the visual intercom echo processing system for the building, manual operation is not needed, and voice communication quality is high. The visual intercom echo processing system for the building comprises a plurality of visual intercom terminals, an Ethernet networking mode is adopted, and each visual intercom terminal comprises a central processor, a power unit, an Ethernet control unit, a camera, a display screen, an input unit, an audio coder and decoder, a microphone and a horn, wherein the power unit, the Ethernet control unit, the camera, the display screen, the input unit, the audio coder and decoder, the microphone and the horn are electrically connected with the central processor, and the microphone and the horn are electrically connected with the audio coder and decoder. The system is characterized in that an embedded system is arranged in the central processor and comprises an audio receiving module, a synchronization module, an echo eliminating module, an audio coding module and a transmitting module. The visual intercom echo processing system for the building can be widely applied to the field of visual intercoms of buildings.

Description

Technical field [0001] The invention relates to a building visual intercom echo processing system. Background technique [0002] The current building video intercom system has roughly three methods for processing sound echo: 1. Using earpiece type sound reproducing structure, avoiding echo by reducing the volume of sound; 2. Using press-to-talk operation mode, which is passed by residents Press the button to determine the direction of voice transmission within a single time, and avoid echo in a half-duplex transmission mode; 3. Determine the direction of voice transmission within a single time by the level of the voice level, and choose the one with relatively high voice level to transmit to the other party , To avoid echo with half-duplex transmission. The above-mentioned building intercom echo processing methods respectively have the following problems and defects: 1. It is inconvenient to need to hold the intercom. 2. It is inconvenient to manually operate the voice transmis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/18H04M9/08
Inventor 黄伟雄
Owner 珠海太川云社区技术股份有限公司
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