Dual-path bass enhancement structure

Abstract

A two-way bass enhancement structure, comprising a bass unit, a thick guide pipe and a thin guide pipe. The input end of the thick guide pipe is connected to the output end of the bass unit, the output end is connected to the sound outlet nozzle of the earphone, and the inner circumferential side of the output end of the thick guide pipe is provided with acoustic damping. The input end of the thin guide pipe is connected to the circumferential side of the thick guide pipe and penetrates through it, and the output end is connected to the sound outlet nozzle of the earphone. The inner diameter of the thin guide pipe is smaller than that of the thick guide pipe. The utility model can not only maintain the information amount of bass, but also directly and efficiently transmit the extremely low frequency part, thereby improving the sound quality.

Description

Technical Field

[0001] This utility model relates to the technical field of headphone internal structure, and in particular to a dual-channel bass enhancement structure. Background Technology

[0002] More and more high-fidelity headphones nowadays are adopting multi-way crossover technology. Some are divided into two channels: high frequency and low frequency, while others are divided into three channels: high frequency, mid frequency, and low frequency. However, the unit responsible for each output channel cannot output only the sound of its own frequency band. This is especially obvious in the low frequency unit, which outputs high frequency while outputting low frequency. This makes the sound impure and cannot achieve good crossover. Utility Model Content

[0003] To address the aforementioned shortcomings, this invention provides a dual-channel bass enhancement structure that can maintain the amount of bass information while enabling direct and efficient transmission of extremely low frequencies, thereby improving sound quality.

[0004] In order to achieve the purpose of this utility model, the following technology is proposed to be adopted:

[0005] A dual-channel bass enhancement structure includes:

[0006] bass unit;

[0007] The thick tube has its input end connected to the output end of the bass unit and its output end connected to the headphone's sound outlet. Acoustic damping is provided on the inner circumference of the output end of the thick tube.

[0008] The thin conduit has its input end connected to and communicating with the circumference of the thick conduit, and its output end connected to the sound outlet of the earphone. The inner diameter of the thin conduit is smaller than that of the thick conduit.

[0009] Furthermore, the acoustic damping includes a metal tube with a filter screen fixed to its inner circumference, and the outer circumference of the metal tube abutting against the inner circumference of the coarse conduit.

[0010] Furthermore, the thin conduit spirals around the outside of the thick conduit.

[0011] Furthermore, the ratio of the inner diameter of the thin catheter to that of the thick catheter is 1:7.5 to 1:2.

[0012] Furthermore, the ratio of the inner diameter of the thin catheter to that of the thick catheter is 1:3.

[0013] The beneficial effects of this technical solution are as follows:

[0014] The thicker duct is responsible for preserving bass information and resolution, while the acoustic damping within the duct filters out the high frequencies of the bass unit, which are considered unpleasant and unpleasant to the ear. However, filtering high frequencies can reduce the bass unit's elasticity. Therefore, a thinner duct is used to allow the bass unit's lower extension to pass through directly. The smaller inner diameter of the thinner duct itself has a high-frequency attenuation effect. This achieves both the preservation of bass information and the direct transmission of the bass extension without acoustic damping, resulting in higher efficiency and better sound quality. Attached Figure Description

[0015] Figure 1 The overall three-dimensional representation of the embodiment of this application is shown. Figure 1 .

[0016] Figure 2 The overall three-dimensional representation of the embodiment of this application is shown. Figure 2 .

[0017] Figure 3 A perspective view of the acoustic damping of an embodiment of this application is shown.

[0018] Figure 4 The diagram shows a comparative test of the coarse duct with and without acoustic damping according to an embodiment of this application.

[0019] Figure 5 The diagram shows a comparative test of a thin conduit and a thick conduit equipped with acoustic damping, according to embodiments of this application. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are merely some embodiments of the present application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] like Figures 1-3 The diagram shows a dual-channel bass enhancement structure, including a bass unit 1, a thick duct 2, and a thin duct 3.

[0022] The input end of the thick tube 2 is connected to the output end of the bass unit 1, and the output end is connected to the sound outlet of the earphone. An acoustic damper 4 is provided on the inner circumference of the output end of the thick tube 2. The acoustic damper 4 includes a metal tube 41, on the inner circumference of which a filter 42 is fixed. The outer circumference of the metal tube 41 is completely in contact with the inner circumference of the thick tube 2.

[0023] The input end of the thin conduit 3 is connected to and communicates with the periphery of the thick conduit 2, and the output end is connected to the sound outlet of the earphone. The thin conduit 3 is spirally wrapped around the outside of the thick conduit 2. The inner diameter of the thin conduit 3 is smaller than the inner diameter of the thick conduit 2. More specifically, the ratio of the inner diameter of the thin conduit 3 to the inner diameter of the thick conduit 2 is 1:7.5 to 1:2, preferably 1:3.

[0024] Figure 4 , Figure 5 This is a graph showing the results of assembling and disassembling different parts of this structure for testing. The horizontal axis represents frequency, with the left side at 20Hz representing the bass range and the right side at 20kHz representing the treble range. The vertical axis represents the frequency response amplitude.

[0025] Figure 4 In the diagram, the solid line represents the frequency response of the output end of the thick duct 2 equipped with acoustic damping 4, and the dashed line represents the frequency response of the output end of the thick duct 2 equipped with acoustic damping 4. The test results show that the acoustic damping significantly reduces the high-frequency range.

[0026] Figure 5 In the diagram, the solid line represents the frequency response of the output end of the thin duct 3, while the dashed line represents the frequency response of the output end of the thick duct 2 equipped with acoustic damping 4. The test results show that the thin duct itself filters out high frequencies, while allowing pure bass without passing through the damping mesh to go directly into the ear canal, resulting in deeper bass extension.

[0027] The above are only some of the embodiments listed in this application and are not intended to limit this application.

Claims

1. A dual-channel bass enhancement structure, characterized in that, include: Low-frequency unit (1); The thick tube (2) has its input end connected to the output end of the bass unit (1) and its output end connected to the sound outlet of the headphones. The inner circumference of the output end of the thick tube (2) is provided with acoustic damping (4). The thin conduit (3) has its input end connected to and through the periphery of the thick conduit (2), and its output end connected to the sound outlet of the earphone. The inner diameter of the thin conduit (3) is smaller than that of the thick conduit (2).

2. The dual-channel bass enhancement structure according to claim 1, characterized in that, The acoustic damping (4) includes a metal tube (41) with a filter screen (42) fixed on its inner circumference and the outer circumference of the metal tube (41) abutting against the inner circumference of the coarse guide tube (2).

3. The dual-channel bass enhancement structure according to claim 1, characterized in that, The thin conduit (3) spirals around the outside of the thick conduit (2).

4. The dual-channel bass enhancement structure according to claim 1, characterized in that, The ratio of the inner diameter of the thin catheter (3) to that of the thick catheter (2) is 1:7.5 to 1:

2.

5. The dual-channel bass enhancement structure according to claim 4, characterized in that, The ratio of the inner diameter of the thin catheter (3) to that of the thick catheter (2) is 1:3.

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