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Audio radiant tube as well as module and loudspeaker box provided with audio radiant tube

A radiation module and radiant tube technology, applied in frequency/direction characteristic devices, sensors, electrical components, etc., can solve the problem that the audio radiation port cannot be coaxially installed with the speaker unit, the sound wave interference and turbulence cannot be overcome, and the sound radiation resistance is large, etc. problems, to achieve the effect of wide range of use, wide applicability, sound field and pitch enhancement

Inactive Publication Date: 2016-04-13
李世煌
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Commonly used inverter structure or passive diaphragm unit structure, the audio radiation port cannot be set coaxially with the speaker unit to achieve the full-range coaxial point sound source effect
If the existing radiation port structure is used, the radiation resistance of the sound is very large while the coaxial arrangement with the speaker unit is achieved, and the interference and turbulence to the sound wave cannot be overcome

Method used

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  • Audio radiant tube as well as module and loudspeaker box provided with audio radiant tube
  • Audio radiant tube as well as module and loudspeaker box provided with audio radiant tube
  • Audio radiant tube as well as module and loudspeaker box provided with audio radiant tube

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] refer to Figure 1-4 , a compact audio inverter module, comprising: a speaker unit 1 and an audio radiation tube 2;

[0056] The audio radiation tube 2 includes an inlet port 21 connected to the rear of the speaker unit 1, and an arc-shaped outlet 22 located at the periphery of the sound cone of the speaker unit 1 and coaxially arranged therewith; therefore, the speaker unit 1 The rear sound wave is sent out from the outlet 22 after being phase-inverted by the audio radiation tube, and reaches approximately the same sound emission point as the speaker unit 1 . Therefore, the above-mentioned compact audio inverter module can achieve the effect of a full-range approximate point sound source, and the phase difference between high, medium and low frequency sounds is close to zero, and the sound field and pitch have been enhanced.

[0057] Since the sound wave propagating in the audio radiation tube 2 will be subject to interference and resistance, the interference and resist...

Embodiment 2

[0063] refer to Figure 5-6 The difference between this embodiment and Embodiment 1 is that there are two audio radiation tubes 2, and the total lengths of the two audio radiation tubes 2 are different. And the audio radiation tube 2 has a stretchable structure.

[0064] Therefore, when the compact audio inverter module is adapted to a smaller box, the length of the audio radiation tube 2 can be lengthened to match the smaller box volume. In order to match different volumes, different inverter tubes are required. Length, usually, multiple inverter tubes will be designed to be the same length, and will also be lengthened when lengthened. However, the inventors of the present invention have proved through experiments that the audio radiation tubes 2 can be of different lengths. At this time, two audio radiation tubes 2 of different lengths are combined to form one tube, which resonates with the cavity of the box body. The two inverter tubes are lengthened or shortened respecti...

Embodiment 3

[0066] refer to Figure 7-8 , the difference between this embodiment and embodiment 1 is:

[0067] The cross-sectional end of the inlet end 21 of the audio radiation tube is circular, and its diameter is smaller than the width of the outlet 22 along the arc distribution direction and larger than the radial width of the outlet 22 . For the audio phase inverter module using the large-size loudspeaker unit 1, its space is relatively large, and the cross-section of the inlet port 21 of the audio radiation tube can be designed as a circle to obtain the maximum cross-sectional area; It is also entirely feasible for the audio phase inverter module of the speaker unit 1 to continue to use an elliptical cross-sectional area design to obtain a more compact structure. .

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PUM

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Abstract

The invention provides an audio radiant tube. The audio radiant tube comprises an entry end arranged behind a loudspeaker unit, and an arc exit arranged at the periphery of a cone of the loudspeaker unit and coaxial with the loudspeaker unit; the width of the exit in the arc distributing direction is larger than that of the entry end in the corresponding direction, and the width of the exit in the arc radial direction is smaller than that of the entry end in the corresponding direction. The invention provides the audio radiant tube, whose entry end is coaxial with the loudspeaker unit, thereby achieving the effect of a full-range approximate point acoustic source. Moreover, the audio radiant tube can reduce the resistance and turbulent flow to acoustic waves spreading therein. Moreover, the audio radiant tube can be widely applied to a passive vibrating diaphragm unit structure and a paraphase structure.

Description

technical field [0001] The invention relates to an acoustic structure design, in particular to a mechanism design of an audio frequency radiation tube. Background technique [0002] When the speaker unit is electromagnetically driven to vibrate, the low-frequency sound waves have a wavelength larger than the size of the speaker, causing the low-frequency sound waves at the front and back of the speaker to cancel each other out. Therefore, the low-frequency sound waves at the back of the speaker need to be isolated (airtight) or phase-inverted. Commonly used inverters are inverter tubes or passive diaphragm units. The commonly used inverter structure or passive diaphragm unit structure cannot set the audio radiation port coaxially with the speaker unit to achieve the full-range coaxial point sound source effect. If the existing radiation port structure is used, the radiation resistance of the sound is very large while the coaxial arrangement with the speaker unit is achieved...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R1/32
CPCH04R1/323
Inventor 李世煌
Owner 李世煌
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