Distributed mike system

A distributed, mike-based technology, applied to transducer circuits, sensors, data exchange through path configuration, etc., can solve problems that are difficult to implement, have no intelligent control, and have single functions

A distributed, mike-based technology, applied to transducer circuits, sensors, data exchange through path configuration, etc., can solve problems that are difficult to implement, have no intelligent control, and have single functions

CN101753383AActive Publication Date: 2010-06-23ZTE CORP
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  • Distributed mike system
  • Distributed mike system
  • Distributed mike system

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Experimental program
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Embodiment Construction

[0026] In view of the multiple defects of existing microphones, the present invention now proposes a design of distributed microphones, including: adopting microphone arrays as DSP (Digital Signal Process, digital signal processing) audio port McAsp (multi-channel audio access interface, which is the U.S. TI's DSP is a general audio access interface, which adopts the input of time-division multiplexed data stream), and then DSP (Digital Signal Processor, digital signal processor) outputs the processed audio data through the Ethernet interface, through Ethernet can change microphone audio output behavior such as output format, etc.

[0027] The core of the present invention is to use DSP to concentrate the audio input of a plurality of microphones (taking the most commonly used DM642 of TI Company as an example, up to 16 microphones can be connected), and then determine the final format of each input according to the requirements of the application. Output, the default is the o...

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Abstract

The invention discloses a distributed mike system, which comprises a distributed mike with a DSP. The distributed mike is provided with a plurality of built-in heads, and the DSP acquires audio data input by the plurality of built-in heads through an audio port and outputs the audio data to a terminal through an Ethernet port. The distributed mike system provided by the invention changes single output and connection modes of the current mike, can integrate the audio inputs of a plurality of mikes, and can realize the output of the audio data of multiple formats as required.

Description

technical field [0001] The invention relates to the application field of multimedia communication and digital signal processor, in particular to a distributed microphone system using Ethernet and audio compression technology. Background technique [0002] The basic applications of microphones are generally in the video conferencing and video surveillance industries. At present, there are two types of microphones used in video conferencing and video surveillance terminals on the market: analog microphones and high-frequency carrier digital microphones, of which analog microphone input is the absolute mainstream. The former uses a microphone to convert the sound signal into an analog electrical signal and then outputs it through a cable; the latter digitizes the analog electrical signal on the basis of the former, and then sends it to the receiving device through a communication protocol such as Bluetooth. The audio output signals of the two microphones are finally sent to th...

Claims

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Application Information

Patent Timeline
23 Jun 2010
Publication
CN101753383A
IPC
H04L12/28; H04R3/00
Inventors
苗军; 丁元欣