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Device for improving receiver noise

A receiver and circuit board technology, applied in earphone/earphone accessories, etc., can solve the problems of enhanced air eddy current effect, increased raw material cost, affected sound output quality, etc., to achieve bass enhancement, reduce air eddy current effect, and improve howling phenomenon. Effect

Inactive Publication Date: 2013-05-01
SUZHOU HEARONIC ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the shells for receivers on the market generally adopt docking type without air pressure balance and bass enhancement through holes. When using, the upper and lower boxes are docked and combined to surround the receiver components. The enhanced optimization process needs to add other parts to the shell to assist the completion, which not only increases the cost of raw materials, but also reduces the manufacturability of related products due to the addition of auxiliary parts assembly process, which is used for air pressure balance and bass The enhanced through hole often enhances the vortex effect of the air in the shell, produces howling, increases the total harmonic distortion of the receiver, affects the quality of the sound output, and has a relatively large negative impact on the actual efficacy of the receiver

Method used

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  • Device for improving receiver noise

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Such as Figure 1-3 As shown, the present invention provides a kind of device that improves receiver howling, comprises electromagnetic shielding housing 10, diaphragm 3, magnetic core coil 5, magnetic induction coil signal line 4, circuit board 9, and electromagnetic shielding housing 10 is set as circular The electromagnetic shielding shell 10 includes a front chamber 1 and a rear chamber 6, the front chamber 1 is provided with a sound transmission port 2, a circuit board 9 is provided on one side of the rear chamber 6, and the circuit board 9 is provided with two wiring holes 8, An opening is provided between the two wiring holes 8, and the opening is made through a stamping and punching molding process. Through holes, the openings on the circuit board 9 are provided with a damping net 7 through glue connection, the material of the damping net 7 is nylon or acrylic fiber, the mesh number of the damping net 7 is 120-500, between the front cavity 1 and the rear cavity ...

Embodiment 2

[0025] The rest is the same as that of Embodiment 1, except that the electromagnetic shielding case 10 is rectangular.

Embodiment 3

[0027] The rest is the same as that of Embodiment 1, except that the electromagnetic shielding case 10 is rectangular.

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PUM

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Abstract

A device for improving receiver noise comprises an electromagnetic shielding casing, a vibrating diaphragm, a magnetic core coil, a magnetic induction coil signal wire and a circuit board, wherein the electromagnetic shielding casing comprises a front cavity and a rear cavity; a speaking terminal is arranged on the front cavity; the circuit board is arranged on one side of the rear cavity; two wiring holes are formed in the circuit board; an open pore is formed between the two wiring holes; and a damping net is arranged on the opening pore. The device disclosed by the invention has the beneficial effects that a through hole corresponding to the open pore in the circuit board is formed in the electromagnetic shielding casing, so that low pitch of a receiver is enhanced; and the damping net is arranged on the open pore of the circuit board so as to reduce the air eddy current effect in the casing, improve the noise phenomenon of the receiver and reduce total harmonic distortion of the receiver.

Description

technical field [0001] The invention relates to the fields of electroacoustics and micromechanics, in particular to a device for improving howling of a receiver. Background technique [0002] At present, the shells for receivers on the market generally adopt docking type without air pressure balance and bass enhancement through holes. When using, the upper and lower boxes are docked and combined to surround the receiver components. The enhanced optimization process needs to add other parts to the shell to assist the completion, which not only increases the cost of raw materials, but also reduces the manufacturability of related products due to the addition of auxiliary parts assembly process, which is used for air pressure balance and bass The enhanced through hole often enhances the eddy current effect of the air in the casing, generates howling, increases the total harmonic distortion of the receiver, affects the quality of sound output, and has a relatively large negat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R1/10
Inventor 李梁周巍
Owner SUZHOU HEARONIC ELECTRONICS
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