CN110191386B - External earphone - Google Patents
External earphone Download PDFInfo
- Publication number
- CN110191386B CN110191386B CN201910468990.4A CN201910468990A CN110191386B CN 110191386 B CN110191386 B CN 110191386B CN 201910468990 A CN201910468990 A CN 201910468990A CN 110191386 B CN110191386 B CN 110191386B
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- Prior art keywords
- sound
- earphone
- guide tube
- sound hole
- sound guide
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- 239000004744 fabric Substances 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 16
- 230000008569 process Effects 0.000 abstract description 13
- 230000004044 response Effects 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000004088 simulation Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1058—Manufacture or assembly
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
- H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
- H04R1/2873—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself for loudspeaker transducers
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Manufacturing & Machinery (AREA)
- Headphones And Earphones (AREA)
Abstract
The invention discloses an external-playing earphone which comprises a loudspeaker arranged in a rear cavity of the earphone, a first sound hole arranged on an earphone shell, and a sound guide pipe arranged in the earphone shell, wherein one end of the sound guide pipe is positioned at a first preset distance right in front of a loudspeaker diaphragm, and the other end of the sound guide pipe extends to the first sound hole, and sound generated by the loudspeaker diaphragm in the vibration process is transmitted to the first sound hole through the sound guide pipe. According to the invention, the sound generated by the vibrating diaphragm of the loudspeaker in the vibrating process can be transmitted to the first sound hole through the sound guide tube and transmitted to the external environment through the first sound hole by arranging the sound guide tube, and the equivalent sound quality of the earphone system can be increased by arranging the sound guide tube, so that the resonance frequency of the earphone system is reduced, the low-frequency response under the external playing function is improved, and the sound effect is improved.
Description
Technical Field
The embodiment of the invention relates to the technical field of earphone equipment, in particular to an external earphone.
Background
Along with the development of science and technology, people are more and more to the demand of earphone, and wherein, the external earphone of putting can open the ears, makes the user can hear the sound in the surrounding environment when listening to the music, uses safelyr to wear for a long time and also can not have uncomfortable feelings such as ear distension, pressure ear that traditional earphone caused. In addition, the high-power loudspeaker like a sound box does not affect people around.
The system resonance frequency of the loudspeaker unit is
Wherein the equivalent acoustic compliance of the vibration system of the loudspeaker unit is CasEquivalent sound mass containing air load is Mas. The system resonance frequency after the speaker unit is installed in the earphone cavity (back cavity) is
Wherein the content of the first and second substances,
Cabthe loudspeaker unit is arranged in the back cavity and the air is equivalent to the sound compliance,
corresponding simplified acoustic analog lineThe pathway is shown in FIG. 1, wherein RacIs the equivalent acoustic resistance of the loudspeaker system. Therefore, the resonant frequency of the loudspeaker unit after being installed in the rear cavity becomes high, so that the low-frequency diving frequency is high and the high-frequency cut-off frequency is reduced under the external playing function, and the external playing effect is poor.
Disclosure of Invention
The embodiment of the invention aims to provide an external earphone which can reduce the resonance frequency of an earphone system in the using process, improve the low-frequency response under the external function and be beneficial to improving the sound effect.
In order to solve the above technical problem, an embodiment of the present invention provides an external earphone, including: the loudspeaker that sets up intracavity behind earphone sets up the first sound hole on the earphone casing and set up in the earphone casing, one end is located the first distance department of predetermineeing in the dead ahead of loudspeaker vibrating diaphragm, the other end extend to the sound guide pipe in first sound hole department, the sound that the loudspeaker vibrating diaphragm produced in the vibration process passes through the sound guide pipe transmits extremely first sound hole department.
Optionally, the earphone housing further includes a second sound hole disposed between the first sound hole and the speaker.
Optionally, the tuning net cloth is arranged on the first sound hole and/or the tuning net cloth is arranged on the second sound hole.
Optionally, the first sound hole and/or the second sound hole are circular, elliptical or racetrack shaped.
Optionally, the distance between the second sound hole and the edge of the speaker is 10mm to 30 mm.
Optionally, the sound guide pipe is a flat pipe.
Optionally, the length of the cross section of the sound guide tube is 8 mm-20 mm, and the width of the cross section of the sound guide tube is 0.5 mm-2 mm.
Optionally, the length of the sound guide tube is 50 mm-100 mm.
Optionally, the sound guide tube is a plastic tube, a metal tube or a wooden tube.
The embodiment of the invention provides an external earphone, which comprises: the loudspeaker is arranged in the rear cavity of the earphone, the first sound hole is formed in the earphone shell, the sound guide tube is arranged in the earphone shell, one end of the sound guide tube is located at a first preset distance in the front of the loudspeaker diaphragm, the other end of the sound guide tube extends to the first sound hole, and sound generated by the loudspeaker diaphragm in the vibration process is transmitted to the first sound hole through the sound guide tube.
Therefore, the sound generated by the vibrating diaphragm of the loudspeaker in the vibration process can be transmitted to the first sound hole through the sound guide tube and transmitted to the external environment through the first sound hole by arranging the sound guide tube, the equivalent sound quality of the earphone system can be increased by arranging the sound guide tube, the resonance frequency of the earphone system is reduced, the low-frequency response under the external playing function is improved, and the sound effect is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed in the prior art and the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a simplified acoustic analog circuit diagram of a prior art speaker unit disposed behind a rear cavity;
fig. 2 is a schematic structural diagram of an external earphone according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of portion A of FIG. 2;
FIG. 4 is a schematic sectional view of portion B of FIG. 3;
FIG. 5 is a simplified acoustic analog circuit diagram corresponding to the external earphone of the present embodiment;
fig. 6 is a schematic diagram of an analog simulation of an external earphone according to an embodiment of the present invention.
Detailed Description
The embodiment of the invention provides an external-playing earphone, which can reduce the resonance frequency of an earphone system in the using process, improve the low-frequency response under the external-playing function and be beneficial to improving the sound effect.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 2 and fig. 3, fig. 2 is a schematic structural diagram of an external earphone according to an embodiment of the present invention; fig. 3 is a partial structural schematic diagram of fig. 2.
This external earphone includes: the earphone comprises a loudspeaker 2 arranged in an earphone rear cavity 1, a first sound hole 4 arranged on an earphone shell 3, and a sound guide tube 5 arranged in the earphone shell 3, wherein one end of the sound guide tube is positioned at a first preset distance right in front of a loudspeaker diaphragm 21, and the other end of the sound guide tube extends to the first sound hole 4, and sound generated by the loudspeaker diaphragm 21 in a vibration process is transmitted to the first sound hole 4 through the sound guide tube 5.
It should be noted that, as shown in fig. 2, in practical application, the speaker 2, the first sound hole 4 and the sound guide tube 5 may be disposed on the left and right ear stems of the earphone, that is, the speaker 2, the first sound hole 4 and the sound guide tube 5 are disposed on the left and right ear stems of the earphone, and both sides of the left and right ear stems may be symmetrically disposed or asymmetrically disposed, and may be specifically disposed according to practical requirements.
Specifically, in the present embodiment, a side is taken as an example for detailed description, specifically referring to fig. 3 and fig. 4, a speaker 2, a sound guiding tube 5 and a first sound hole 4 are disposed in a rear cavity of a side ear stem of the earphone, and a simplified acoustic analog circuit after the sound guiding tube 5 is disposed is shown in fig. 5, wherein an equivalent acoustic mass of the sound guiding tube 5 is MapThe total equivalent acoustic compliance of the system is CacTotal equivalent acoustic mass of the system is Mas+MapWherein:
therefore, after the sound guide tube 5 is added, the resonance frequency of the earphone system is
Can see fLIs less than fscWherein, in the step (A),
therefore, after the sound guide tube 5 is arranged, the resonance frequency of the earphone system is reduced, and the low-frequency response under the external amplification function is improved.
It should be noted that the sound guiding tube 5 in this embodiment is disposed inside the ear handle housing of the earphone, and one end of the sound guiding tube 5 is located at a first preset distance right in front of the loudspeaker diaphragm 21 of the loudspeaker 2, and specifically may be located within an orthographic projection range of the loudspeaker diaphragm 21, and the other end may be disposed within a preset range with a center of the first sound hole 4 as a center and a preset value as a radius, that is, the other end of the sound guiding tube 5 may be disposed at a second preset distance from the first sound hole 4, so that sound generated during vibration of the speaker diaphragm 21 can be transmitted into the sound guide tube 5, and is transmitted to the first sound hole 4 through the sound guide tube 5, so that the sound is transmitted to the external environment through the first sound hole 4, the distance between the sound guide tube 5 and the loudspeaker diaphragm 21 can be determined according to actual needs, as long as it is ensured that the sound guide tube 5 is not touched in the vibration process of the loudspeaker diaphragm 21.
Specifically, the sound guide tube 5 in this embodiment may be a plastic tube, which is beneficial to reducing the mass of the earphone. In addition, the wall of the sound guide tube 5 in this embodiment may be integrated with the earphone housing, that is, a channel or a slit may be provided in the earphone housing as the sound guide tube. Besides being made of plastic tubes, the sound guide tube 5 can also be made of metal tubes or wooden tubes and other sound tubes for common earphones and sound boxes.
The sound guide tube 5 in this embodiment may be a flat tube, or of course, a tube of other shape, such as a circular tube, and the sound guide tube 5 in this embodiment has a length of 50mm to 100mm, a width of a cross section of 0.5mm to 2mm, and a length of 8mm to 20 mm.
Accordingly, the first sound hole 4 may be disposed at a distance of 50mm to 100mm from the edge of the speaker 2.
Further, due to the viscous action of the sound wave in the sound guide tube 5, the generated heat loss, and the like, when the sound generated during the vibration of the speaker diaphragm 21 is transmitted in the sound guide tube 5, the sound will generate a large loss to high frequency, and in order to reduce the loss to high frequency, the external headphone in this embodiment may further include a second sound hole 6 disposed on the headphone housing 3 and located between the first sound hole 4 and the speaker 2.
In order to further reduce the loss of high frequency, the second sound hole 6 in this embodiment may be disposed at a position 10mm to 30mm away from the edge of the speaker, and the specific distance value may be determined according to actual situations, which is not particularly limited in this embodiment.
Specifically, the first sound hole 4 and/or the second sound hole 6 in this embodiment are circular, oval or racetrack, and of course, the specific shapes of the first sound hole 4 and the second sound hole 6 may be set according to actual needs, and the sizes of the areas of the first sound hole 4 and the second sound hole 6 may be determined according to the size of the speaker 2.
Furthermore, in order to further improve the sound effect, in this embodiment, a tuning mesh cloth for the second sound hole 6 may be further disposed on the first sound hole 4 and/or the second sound hole 6, so as to achieve the purposes of dust prevention and tuning.
In addition, in this embodiment, a voltage of 4 Ω,
For example, a micro-cap is used to establish an acoustic model for simulation calculation, as shown in fig. 6, a curve 51 is a frequency response curve of the speaker 2, and F can be shown0500 Hz; the loudspeaker 2 unit is fitted into the rear chamber as indicated by curve 52F0The resonance frequency becomes high at 600 Hz; when the sound guide tube 5 is additionally provided in front of the speaker 2, the submarine frequency can be lowered (F) as shown by a curve 530300Hz), low frequency response enhancement; when the second sound hole 6 is additionally provided, the loss to high frequencies can be reduced, as shown in a curve 54.
Therefore, the sound generated by the vibrating diaphragm of the loudspeaker in the vibration process can be transmitted to the first sound hole through the sound guide tube and transmitted to the external environment through the first sound hole by arranging the sound guide tube, the equivalent sound quality of the earphone system can be increased by arranging the sound guide tube, the resonance frequency of the earphone system is reduced, the low-frequency response under the external playing function is improved, and the sound effect is improved.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. An external earphone, comprising: the loudspeaker comprises a loudspeaker arranged in a rear cavity of the earphone, a first sound hole arranged on the earphone shell, and a sound guide tube arranged in the earphone shell, wherein one end of the sound guide tube is positioned at a first preset distance right in front of the loudspeaker diaphragm, and the other end of the sound guide tube extends to the first sound hole;
the external earphone also comprises a second sound hole which is arranged on the earphone shell and is positioned between the first sound hole and the loudspeaker; the second sound hole is formed in the sound guide tube and used for reducing high-frequency loss.
2. The external earphone according to claim 1, further comprising a tuning mesh cloth disposed on the first sound hole and/or a tuning mesh cloth disposed on the second sound hole.
3. The loud headphone of claim 1 wherein the first sound hole and/or the second sound hole are circular, oval, or racetrack shaped.
4. The external earphone according to claim 1, wherein the second sound hole is spaced from the edge of the speaker by 10mm to 30 mm.
5. The headphone as claimed in any one of claims 1 to 4, wherein the sound guide tube is a flat tube.
6. The external earphone as claimed in claim 5, wherein the sound guide tube has a cross-sectional length of 8mm to 20mm and a width of 0.5mm to 2 mm.
7. The external earphone according to claim 5, wherein the sound guide tube has a length of 50mm to 100 mm.
8. The external earphone according to claim 5, wherein the sound guide tube is a plastic tube or a metal tube or a wooden tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910468990.4A CN110191386B (en) | 2019-05-31 | 2019-05-31 | External earphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910468990.4A CN110191386B (en) | 2019-05-31 | 2019-05-31 | External earphone |
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| Publication Number | Publication Date |
|---|---|
| CN110191386A CN110191386A (en) | 2019-08-30 |
| CN110191386B true CN110191386B (en) | 2021-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910468990.4A Active CN110191386B (en) | 2019-05-31 | 2019-05-31 | External earphone |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110972021B (en) * | 2019-12-20 | 2022-08-19 | 歌尔股份有限公司 | Earphone set |
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| CN110191386A (en) | 2019-08-30 |
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