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An array microphone for conference room

A conference room and array technology, applied in the field of array microphones, can solve the problems that the microphone has no auxiliary function for sound fill, the pickup distance is limited, and the microphone is not suitable for use in conference rooms, etc. processing effect

Active Publication Date: 2016-10-12
方图智能(深圳)科技集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is that the existing microphones are not suitable for use in conference rooms, and at the same time, the existing microphones do not have a good supplementary sound supplement function, and the sound pickup distance is also limited

Method used

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  • An array microphone for conference room
  • An array microphone for conference room
  • An array microphone for conference room

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0025] Such as figure 1 , figure 2 As shown, it is an array microphone used in a conference room, which includes a PCB board 1, on which eight microphones 2 and driving circuits for the eight microphones 2 are arranged on the PCB board 1, and on the PCB board 1, there are One main area 31 and two auxiliary areas 32, and the auxiliary areas 32 are symmetrically arranged at both ends of the main area 31; the eight microphones 2 include four first microphones 21 and four second microphones 22, Two bass microphones 4 are included in the second microphone 22, and the bass microphone 4 is used for sound fill; the first microphones 21 are all arranged in the main area 31, and there is a The 5mm distance is aligned on the first arc.

[0026] The second microphones 22 are respectively arranged in the two auxiliary areas 32, and the four second microphones 22 in the two auxiliary areas 32 are all arranged on the second arc, and the second arc The radian is greater than the radian of...

no. 2 example

[0028] Such as image 3 , Figure 4 As shown, it is an array microphone used in a conference room, which includes a PCB board 1, on which eleven microphones 2 and driving circuits for the eleven microphones 2 are arranged, on the PCB board 1 There is one main area 31 and two auxiliary areas 32, and the auxiliary areas 32 are symmetrically arranged at both ends of the main area 31; the eleven microphones 2 include five first microphones 21 and six second Microphone 22, two bass microphones 4 are included in the six second microphones 22, and the bass microphone 4 is used for sound fill; the first microphones 21 are all arranged in the main area 31, and the first The microphones 21 are arranged on the first arc with a distance of 5 mm.

[0029] The second microphones 22 are respectively arranged in the two auxiliary areas 32, and the six second microphones 22 in the two auxiliary areas 32 are all arranged on the second arc, and the second arc The radian is larger than the rad...

no. 3 example

[0031] Such as Figure 5 , Figure 6 As shown, it is an array microphone used in a conference room, which includes a PCB board 1, on which fourteen microphones 2 and driving circuits for the fourteen microphones 2 are arranged, and on the PCB board 1 There is one main area 31 and two auxiliary areas 32, and the auxiliary areas 32 are symmetrically arranged at both ends of the main area 31; the fourteen microphones 2 include six first microphones 21 and eight second Microphones 22, four bass microphones 4 are included in the eight second microphones 22, and the bass microphones 4 are used to fill sound; the first microphones 21 are all arranged in the main area 31, and the first The microphones 21 are arranged on the first arc with a distance of 5 mm.

[0032] The eight second microphones 22 are respectively arranged in the two auxiliary regions 32, and the eight second microphones 22 in the two auxiliary regions 32 are all arranged on the second arc, and the second arc The ...

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Abstract

The invention relates to a microphone array for a conference room. The microphone array comprises a PCB. Multiple microphones and a drive circuit of the microphones are arranged on the PCB. The PCB has a primary region and two auxiliary regions, and the auxiliary regions are symmetrically arranged with respect to the primary region. The multiple microphones comprise at least two first microphones and at least four second microphones. The second microphones at least comprise one bass microphone. The first microphones are all arranged in the primary region and are arrayed in a first arc line at intervals of a. The second microphones are respectively arranged in the two auxiliary regions. The second microphones in the two auxiliary regions are all arranged in second arc lines, and the second microphones in each auxiliary region are arrayed in the auxiliary region at intervals of b. Moreover, b > a. The multiple microphones are divided in the primary region and the auxiliary regions and the microphones in the primary region are dense, so that the pickup distance is prolonged; and at the same time, the base microphones in the auxiliary regions have a sound compensation auxiliary function.

Description

technical field [0001] The invention relates to an array microphone used in a conference room, which includes a PCB board, on which a plurality of microphones and driving circuits of the plurality of microphones are arranged. Background technique [0002] There are many kinds of existing conference room microphones. The directivity (pickup pattern) of the microphone refers to the sensitivity of the microphone to sounds from different directions or angles. In simple terms, it is the ability of the microphone to "listen" to sounds from different directions. The directivity categories are: omnidirectional, cardioid, and hypercardioid. An omnidirectional microphone has equal sensitivity to all angles, which means it picks up sound evenly from all directions. However, the disadvantage of omnidirectional microphones is that they cannot avoid unnecessary sound sources, such as broadcast loudspeakers, so there may be echoes; the front end of the cardioid microphone has the stronges...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R19/04
Inventor 吴东亮
Owner 方图智能(深圳)科技集团股份有限公司
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