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Sound box

A speaker and inverter tube technology, applied in the direction of frequency/direction characteristic devices, etc., can solve the problems that affect the aesthetics of the speaker and the speaker cannot be close to the wall

Inactive Publication Date: 2019-06-04
SHENZHEN ABRAMTEK TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, when the phase-inverting hole is opened at the back of the speaker, the rear of the speaker cannot be close to the wall, and opening the phase-inverting hole on the front of the speaker will affect the aesthetics of the speaker

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0063] The sound box does not have the above-mentioned first circuit board 3 or the first circuit board 3 is arranged at other appropriate positions except under the top cover, the inner diameter of the inverter tube is 20 mm, and the gap between the upper end of the inverter tube and the lower surface of the top cover is The distance is about 7 mm. The lower surface of the top cover is basically a plane, and there is no interference of other parts between the top cover and the upper end of the inverted tube. In this case, the speaker's bass effect and sound quality are good.

example 2

[0065] The inner diameter of the inverter tube is 20 mm, the top cover 2 is also provided with control keys and the first circuit board 3 is arranged below the top cover 2, and the distance d between the upper end 122 of the inverter tube and the lower surface of the top cover 2 is about The average distance d' between the upper end 122 of the inverter tube and the lower surface of the first circuit board 3 is about 5 mm. It is found in the experiment that the existence of the first circuit board 3 and the arrangement of the components on the first circuit board 3 will obviously affect the transient response of the sound box, resulting in the deterioration of the bass effect and the occurrence of noise.

example 3

[0067] The inner diameter of the inverted tube is 21 mm, and the distance d between the upper end 122 of the inverted tube 12 and the lower surface of the top cover 2 is about 12 mm, and the upper end 122 of the inverted tube 12 and the first The distance d' between the lower surfaces of the circuit boards 3 was 9 mm. In this case, the design of the circuit board (for example, the layout of the circuit and components on the circuit board) will have some adverse effects on the bass effect of the speaker, for example, the distance between the capacitor and other components on the first circuit board 3 is inverted When the upper end opening of the pipe is very close.

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PUM

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Abstract

The invention discloses a sound box. The sound box comprises a lower shell extending along the vertical direction; a top cover which is arranged at the top end of the shell; and a base which is arranged at the bottom end of the shell, wherein the base is provided with a hole, and the lower shell, the top cover and the base form a sound box inner cavity; And an inverter tube which is arranged in the inner cavity of the sound box. The inverter tube extends in the vertical direction, the lower end of the inverter tube is arranged on the base and communicated with the outside of the sound box through the hole in the base, the distance d between the upper end of the inverter tube and the lower surface of the top cover meets the condition that d is larger than or equal to D / 4 and smaller than orequal to D, and D is the inner diameter of the inverter tube. And under the condition that the circuit board is arranged below the top cover of the sound box, the distance d' between the upper end ofthe inverter tube and the lower surface of the top cover satisfies D / 4 < = d '< = D.

Description

technical field [0001] The present invention relates to a sound box, and in particular to a vented sound box with a vertically arranged port. Background technique [0002] According to different internal structures, speakers can usually be divided into: closed type, inverted type, labyrinth type, front horn type, empty paper cone type, etc. [0003] Inverted speakers, also known as low-frequency reflex speakers, are currently a widely used speaker. The difference between it and the closed speaker is that an inverter tube is installed on the panel of the speaker. When the speaker is working, the sound waves radiated from the back pass through the inverter tube and then radiate to the front, superimposed with the sound waves in front of the speaker, and then go to the front of the speaker together. The front radiation enhances the low frequency effect. [0004] However, the transient characteristics of vented speakers are worse than those of closed speakers. In order to i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R1/20
Inventor 刘向东
Owner SHENZHEN ABRAMTEK TECH CO LTD