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Sound head polar plate of elliptical microphone

An elliptical and polar plate technology, applied in the field of microphone capsules, can solve the problems of complex production, poor reliability, and high cost, and achieve the effects of simple production, flat frequency response, and wide frequency response

Inactive Publication Date: 2010-06-30
恩沛音响设备(上海)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, its production is complicated, the cost is high, and the reliability is poor.

Method used

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  • Sound head polar plate of elliptical microphone
  • Sound head polar plate of elliptical microphone
  • Sound head polar plate of elliptical microphone

Examples

Experimental program
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Embodiment Construction

[0018] The present invention is described in detail below in conjunction with accompanying drawing and specific embodiment:

[0019] Concrete processing steps of the present invention are as follows:

[0020] 1. Select the silicon bronze rod, according to the thickness of the car (the allowance for grinding), and drill the center hole Φ4-0.2.

[0021] 2. Wire-cut ellipse (it is best to use medium-feeding or slow-feeding wire to form), leaving a polishing allowance.

[0022] 3. The engraving machine processes elliptical grooves and scribing ellipses for scribing and drilling.

[0023] 4. After the straight calibration knife is calibrated, the PC bar car and the size interference fit are pressed into the hole.

[0024] 5. Flat grinding Coarse and fine grinding two planes, keep parallel wave 0.02mm.

[0025] 6. Drilling, tapping, chamfering and drilling and tapping on the outer circle according to the drawing.

[0026] 7. Deburring and grinding two planes (manual grinding wit...

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Abstract

The invention relates to the technical field of microphone sound head, in particular to a sound head polar plate of microphone, which includes a polar plate as well as a step through hole, a blind hole, a screwed hole, a chute, a screwed blind hole and an insulating post arranged on the polar plate; the central part of the polar plate is provided with a central hole; the surrounding of the central hole is provided with a plurality of through holes which are uniformly distributed; the polar plate is characterized in that the appearance of the polar plate is elliptical; the length of the long axis of the polar plate is 45mm-11mm and the length of the short axis of the polar plate is 44mm-10mm; the diameter of the through hole is 0.7-1.3mm; the through holes are arranged with mutually symmetrical central horizontal line and vertical line of the polar plate; compared with the prior art, the sound head polar plate of elliptical microphone has simple and novel structure, wide frequency response, flat frequency response, higher frequency response characteristics and directivity, and changes the sound head structure of the previous traditional microphone. Besides, the sound head polar plate of elliptical microphone is simple to be manufactured with obvious effects, and is worthy of popularization and application.

Description

[technical field] [0001] The invention relates to the technical field of a microphone head, in particular to a microphone head plate. [Background technique] [0002] A complete sound reinforcement system must at least include a microphone (microphone), an amplifier and a speaker to amplify and output the sound. However, its mode of operation is mainly that the microphone converts the audio signal into an electrical signal, and then the amplifier amplifies the electrical signal and sends it to the speaker, and the speaker converts the amplified electrical signal into sound and sends it out. Under this system, if the microphone has no directivity, the receiving sensitivity of the microphone is the same in all directions, which will easily cause feedback phenomenon, resulting in harsh howling sound from the speaker. In order to effectively suppress the feedback phenomenon, a directional microphone came into being. [0003] The so-called "directional microphone" means that the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R3/02
Inventor 邹四维
Owner 恩沛音响设备(上海)有限公司
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