Microphone array radio method and system with positioning technology combination

A technology of microphone array and positioning technology, which is applied in the field of microphone array sound collection method and its system, and can solve problems such as poor recording effect

Active Publication Date: 2005-07-27
ACER INC
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  • Abstract
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  • Claims
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Problems solved by technology

Yet also because the microphone array device 1 of prior art utilizes the above-mentioned method for estimating the delay time, can only detect the maximum sound source and amplify it for the maximum sound source, so that in its sound-receiving environ...

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  • Microphone array radio method and system with positioning technology combination
  • Microphone array radio method and system with positioning technology combination
  • Microphone array radio method and system with positioning technology combination

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Embodiment Construction

[0018] The foregoing and other technical contents, features and effects of the present invention will be clearly understood in the following detailed description of an embodiment with reference to the accompanying drawings.

[0019] See Figure 2, and fit the image 3 As shown in the process flow, it is an embodiment of the microphone array sound collection method combined with positioning technology and its system of the present invention. The microphone array sound collection system 2 combined with positioning technology in this embodiment can perform sound source sound collection and amplification for a target sound source 3. The system 2 includes n (in this embodiment, 4 are taken as an example) microphones m1 - m4 , a target sound source detection unit 21 and a signal processing unit 22 .

[0020] The microphones m1 - m4 are arranged in an array (a single array is taken as an example in this embodiment), and two microphones are equidistantly spaced by a first distance d1 ....

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Abstract

The system consists of: multi microphones arranged with a first distance between each other; a target sound source sensing unit that can sense the direction of target sound source and the distance with it -second distance, and figures out the first microphone and second microphone , which are the closest one and farthest one with the target sound source, to get a third distance that is the distance between first microphone and the target sound source, the space number 's' that is the space number between the second microphone and first microphone; a signal process unit by which the delay time 'delta t' from the target sound source to first microphone and neighboring microphone can be figured out according to the first distance and third distance; the summation of sound wave signal delay received by each microphone is mad by the formula: (s- i) delta t; 'i' is the space number between each microphone and first microphone.

Description

technical field [0001] The invention relates to a microphone array sound collection method combined with positioning technology and its system, in particular to a microphone array sound collection method combined with positioning technology and its system which can enhance the recording quality of the microphone array in a noisy environment. Background technique [0002] The traditional microphone array mainly includes a plurality of microphones connected in an array, and processes the sound source signals received by these microphones to obtain the directionality of the sound source signal, so the application of the microphone array can improve the signal-to-noise ratio (signal-to- noise ratio, referred to as SNR), to enhance the signal from a specific direction and suppress other unwanted noise. [0003] Such as figure 1 Shown is a microphone array device 1 known as "delay-and-sum" (delay-and-sum) in the prior art, which includes n equidistant (distance d) microphones 11 ...

Claims

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Application Information

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IPC IPC(8): G10L15/20G10L21/0316H04R9/08
Inventor 许天明
Owner ACER INC
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