CN113316061A - Audio device for preventing sound leakage - Google Patents
Audio device for preventing sound leakage Download PDFInfo
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- CN113316061A CN113316061A CN202110210112.XA CN202110210112A CN113316061A CN 113316061 A CN113316061 A CN 113316061A CN 202110210112 A CN202110210112 A CN 202110210112A CN 113316061 A CN113316061 A CN 113316061A
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- 238000010276 construction Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000002238 attenuated effect Effects 0.000 description 2
- 210000000613 ear canal Anatomy 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000644 propagated effect Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000005236 sound signal Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 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
- H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
- H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
- H04R1/403—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers loud-speakers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
- H04R2201/40—Details of arrangements for obtaining desired directional characteristic by combining a number of identical transducers covered by H04R1/40 but not provided for in any of its subgroups
Abstract
The invention discloses an audio device for preventing sound leakage, which comprises a first acoustic cavity, a second acoustic cavity, a first loudspeaker and a second loudspeaker, wherein the first acoustic cavity and the second acoustic cavity are mutually independent; the first acoustic cavity is provided with a first front sound outlet and a first rear sound outlet, and the first front sound outlet and the first rear sound outlet are isolated from each other through a first loudspeaker; and the second acoustic cavity is provided with a second front sound outlet and a second rear sound outlet, and the second front sound outlet and the second rear sound outlet are mutually isolated through a second loudspeaker. The four-dipole sound field enables a user to be in a strong sound field area and other people to be in a weak sound field area, so that the purpose of preventing sound leakage is achieved.
Description
Technical Field
The invention relates to the technical field of sound generating equipment, in particular to an audio device for preventing sound leakage.
Background
The sound outlet end of the non-in-ear audio device is arranged outside the auditory canal, so that the sound outlet hole is exposed, the design brings the result of sound leakage, and privacy cannot be well protected. Existing technologies such as BOSE, huacheng glasses have similar designs to prevent sound leakage, but far from meeting the privacy protection requirements.
Disclosure of Invention
The present invention is directed to overcome the disadvantages of the prior art and to provide an audio device for preventing sound leakage.
In order to achieve the purpose, the invention adopts the following technical scheme:
an audio device for preventing sound leakage comprises a first acoustic cavity and a second acoustic cavity which are mutually independent, a first loudspeaker arranged in the first acoustic cavity, and a second loudspeaker arranged in the second acoustic cavity; the first acoustic cavity is provided with a first front sound outlet and a first rear sound outlet, and the first front sound outlet and the first rear sound outlet are isolated from each other through a first loudspeaker; and the second acoustic cavity is provided with a second front sound outlet and a second rear sound outlet, and the second front sound outlet and the second rear sound outlet are mutually isolated through a second loudspeaker.
The further technical scheme is as follows: the first acoustic cavity is constructed the same as the second acoustic cavity and is hermetically sealed.
The further technical scheme is as follows: the sound outlet directions of the first front sound outlet and the second front sound outlet are opposite or the same, or/and the sound outlet directions of the first rear sound outlet and the second rear sound outlet are the same or opposite.
The further technical scheme is as follows: the front sound outlet end of the first loudspeaker is communicated with the first front sound outlet hole, and the rear sound outlet end of the first loudspeaker is communicated with the first rear sound outlet hole; and the front sound outlet end of the second loudspeaker is communicated with the second front sound outlet, and the rear sound outlet end of the second loudspeaker is communicated with the second rear sound outlet.
The further technical scheme is as follows: the front sound outlet end of the first loudspeaker is communicated with the first front sound outlet through a first front sound cavity, and the rear sound outlet end of the first loudspeaker is communicated with the first rear sound outlet through a first rear sound cavity.
The further technical scheme is as follows: and the front sound outlet end of the second loudspeaker is communicated with the second front sound outlet through a second front sound cavity, and the rear sound outlet end is communicated with the second rear sound outlet through a second rear sound cavity.
The further technical scheme is as follows: the first front sound cavity and the second front sound cavity have the same structure; the distance between the sound outlet end of the first loudspeaker and the first front sound outlet is the same as the distance between the sound outlet end of the second loudspeaker and the second front sound outlet; the first rear sound cavity and the second rear sound cavity have the same structure; the distance between the rear sound end of the first loudspeaker and the first rear sound outlet is the same as the distance between the rear sound end of the second loudspeaker and the second rear sound outlet.
The further technical scheme is as follows: the first rear sound cavity is provided with a first bass tube communicated with the outside, and the second rear sound cavity is provided with a second bass tube communicated with the outside.
The further technical scheme is as follows: the front sound emitting direction of the first loudspeaker is parallel to, perpendicular to or forms a set included angle with the first front sound emitting hole; the front sound emitting direction of the second loudspeaker is parallel to, perpendicular to or forms a set included angle with the second front sound emitting hole; or/and the rear sound emitting direction of the first loudspeaker is parallel to, perpendicular to or forms a set included angle with the first rear sound emitting hole; the rear sound outlet direction of the second loudspeaker is parallel to, perpendicular to or forms a set included angle with the second rear sound outlet.
The further technical scheme is as follows: the cross-sectional areas of the first front sound outlet and the first rear sound outlet are 1/3-2/3 of the effective vibration area of the diaphragm of the first loudspeaker; and the cross-sectional areas of the second front sound outlet and the second rear sound outlet are 1/3-2/3 of the effective vibration area of the diaphragm of the second loudspeaker.
Compared with the prior art, the invention has the beneficial effects that: the four-dipole sound field enables a user to be in a strong sound field area and other people to be in a weak sound field area, so that the purpose of preventing sound leakage is achieved.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more apparent, the following detailed description will be given of preferred embodiments.
Drawings
FIG. 1 is a diagram illustrating a first aspect of an audio apparatus for preventing sound leakage according to the present invention;
FIG. 2 is a diagram illustrating a second aspect of an audio apparatus for preventing sound leakage according to the present invention;
FIG. 3 is a diagram illustrating a third aspect of an audio apparatus for preventing sound leakage according to the present invention;
FIG. 4 is a diagram illustrating a fourth aspect of an audio apparatus for preventing sound leakage according to the present invention;
fig. 5 is a schematic view of an audio device with a bass tube for preventing sound leakage according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and the detailed description.
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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be connected or detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above should not be understood to necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by one skilled in the art.
Fig. 1 to 5 are drawings of the present invention.
Referring to fig. 1, the audio device for preventing sound leakage includes a first acoustic cavity 10 and a second acoustic cavity 20 that are independent of each other, a first speaker 30 disposed inside the first acoustic cavity 10, and a second speaker 40 disposed inside the second acoustic cavity 20. The first acoustic cavity 10 is provided with a first front sound outlet 11 and a first rear sound outlet 12, and the first front sound outlet 11 and the first rear sound outlet 12 are isolated from each other by the first speaker 30. The second acoustic cavity 20 is provided with a second front sound outlet 21 and a second rear sound outlet 22, and the second front sound outlet 21 and the second rear sound outlet 22 are isolated from each other by the second speaker 40. The first acoustic cavity 10 and the second acoustic cavity 20 are arranged next to each other and independent from each other so that the interiors of the two cavities are not interfered by each other. Since the first acoustic cavity 10 is provided with the first front sound outlet 11 and the first rear sound outlet 12, the second acoustic cavity 20 is provided with the second front sound outlet 21 and the second rear sound outlet 22, and the first speaker 30 in the first acoustic cavity 10 and the second speaker 40 in the second acoustic cavity 20 are arranged in an array manner, the whole device forms a four-dipole sound field. The acoustic device enables a user to be in a strong sound field area, and other people are in a weak sound field area, so that the purpose of preventing sound leakage is achieved.
It should be noted that the first front sound outlet 11 and the first rear sound outlet 12, and the second front sound outlet 21 and the second rear sound outlet 22 in the present invention are not "front" and "rear" in a strict sense, but only for the reason that the first rear sound outlet 12 may be disposed at a side of the first front sound outlet 11, and the second rear sound outlet 22 may be disposed at a side of the second front sound outlet 21. The first front sound outlet 11 and the first rear sound outlet 12, and the second front sound outlet 21 and the second rear sound outlet 22 are used for radiating sound.
Wherein the first acoustic cavity 10 is identically constructed to the second acoustic cavity 20. The positions of the first front sound outlet 11 and the first rear sound outlet 12 in the first acoustic cavity 10 are the same as the positions of the second front sound outlet 21 and the second rear sound outlet 22 in the second acoustic cavity 20. The first acoustic chamber 10 has the same volume as the second acoustic chamber 20. The first and second speakers 30 and 40 are respectively installed in the first and second acoustic cavities 10 and 20 at the same position. In addition to the same points described above, there are other same points such as internal configuration, wall thickness, weight.
Preferably, the first acoustic cavity 10 and the second acoustic cavity 20 may be considered to be arranged symmetrically or rotationally symmetrically. As shown in fig. 1 to 2, the rotation point is a point between the first acoustic cavity 10 and the second acoustic cavity 20, and generally two end points of the first acoustic cavity 10 and the second acoustic cavity 20 are in contact with each other. Fig. 3 to 5 show that the contact surfaces of the first acoustic cavity 10 and the second acoustic cavity 20 are symmetrically arranged. The first acoustic cavity 10 and the second acoustic cavity 20 are symmetrical to each other, and may be symmetrical to each other.
The sound emitting directions of the first front sound outlet 11 and the second front sound outlet 21 are opposite or the same, and the sound emitting directions of the first rear sound outlet 12 and the second rear sound outlet 22 are the same or opposite. The specific classification is as follows:
1. as shown in fig. 1, the sound emitting directions of the first front sound outlet 11 and the second front sound outlet 21 are opposite, and the sound emitting directions of the first rear sound outlet 12 and the second rear sound outlet 22 are opposite, but the directions of the first front sound outlet 11 and the second rear sound outlet 22 are the same, and the directions of the first rear sound outlet 12 and the second front sound outlet 21 are the same, so that the sound is transmitted in two different directions.
2. As shown in fig. 2, the sound emitting directions of the first front sound emitting hole 11 and the second front sound emitting hole 21 are opposite, the sound emitting directions of the first rear sound emitting hole 12 and the second rear sound emitting hole 22 are opposite, and the sound emitting directions of the first front sound emitting hole 11, the first rear sound emitting hole 12, the second front sound emitting hole 21 and the second rear sound emitting hole 22 are opposite in a divergent manner and are propagated in four directions in different directions.
3. As shown in fig. 3, the first front sound outlet 11 and the second front sound outlet 21 emit sound in the same direction, and the first rear sound outlet 12 and the second rear sound outlet 22 emit sound in opposite directions, which are propagated in three different directions.
4. As shown in fig. 4, the sound emitting directions of the first front sound outlet 11 and the second front sound outlet 21 are opposite, and the sound emitting directions of the first rear sound outlet 12 and the second rear sound outlet 22 are the same, and the sound is transmitted in three different directions.
In all of the above four cases, the four dipole sound field principle is adopted, and the sound directivity is realized by using the first front sound outlet 11 and the first rear sound outlet 12 in front of and behind the first speaker 30, the second front sound outlet 21 and the second rear sound outlet 22 in front of and behind the second speaker 40, and the phase difference of the sound signals in front of and behind the diaphragms of the first speaker 30 and the second speaker 40, so that the entrance of the ear canal is in the region with the strongest directivity.
The front sound-emitting end of the first speaker 30 is communicated with the first front sound-emitting hole 11, and the rear sound-emitting end is communicated with the first rear sound-emitting hole 12. The diaphragm of the first speaker 30 faces the first front sound-emitting hole 11 so that the emitted sound of the first speaker 30 can be emitted from the first front sound-emitting hole 11.
Similarly, the front sound output end of the second speaker 40 communicates with the second front sound output hole 21, and the rear sound output end communicates with the second rear sound output hole 22. The diaphragm of the second speaker 40 faces the second front sound-emitting hole 21 so that the emitted sound of the second speaker 40 can be emitted from the second front sound-emitting hole 21.
Further, the front sound-emitting end of the first speaker 30 is communicated with the first front sound-emitting hole 11 through the first front sound cavity 13, and the rear sound-emitting end is communicated with the first rear sound-emitting hole 12 through the first rear sound cavity 14. The sound emitted by the first loudspeaker 30 is firstly reflected in the first front sound cavity 13, so that energy is gathered in the first front sound cavity 13 to form a bass effect, and then the sound is emitted from the first front sound outlet 11, so that the sound guidance is better, and the sound effect is improved.
Further, the front sound-emitting end of the second speaker 40 is communicated with the second front sound-emitting hole 21 through the second front sound cavity 23, and the rear sound-emitting end is communicated with the second rear sound-emitting hole 22 through the second rear sound cavity 24. Likewise, the second front sound chamber 23 has an energy concentrating effect and a sound effect enhancing effect on the sound emitted from the second speaker 40.
The first front sound cavity 13, the second front sound cavity 23, the first rear sound cavity 14 and the second rear sound cavity 24 may be regular cavities or irregular cavities. Regular cavity as shown in fig. 1, the sound outlet end of the first speaker 30 may directly face the first front sound outlet 11 or the second front sound outlet 21; irregular as shown in fig. 2, the sound outlet end of the first speaker 30 can pass through the circuitous cavity structure and then be emitted from the first front sound outlet 11 or the second front sound outlet 21.
The first front sound cavity 13 is constructed identically to the second front sound cavity 23 so that the waveform of the formed sound wave when it comes out from the first front sound outlet 11 or the second front sound outlet 21 is identical. The distance between the sound outlet end of the first speaker 30 and the first front sound outlet 11 is the same as the distance between the sound outlet end of the second speaker 40 and the second front sound outlet 21, so that not only is sound energy accumulated in the first front sound cavity 13 or the second front sound cavity 23, but also sound waves emitted from the first front sound outlet 11 or the second front sound outlet 21 are attenuated the same.
The first rear sound cavity 14 is of the same construction as the second rear sound cavity 24. The distance between the rear sound end of the first speaker 30 and the first rear sound outlet 12 is the same as the distance between the rear sound end of the second speaker 40 and the second rear sound outlet 22. Similarly, the first speaker 30 and the second speaker 40 can gather in the first rear sound cavity 14 and the second rear sound cavity 24, respectively, and the sound waves emitted from the first rear sound outlet 12 and the second rear sound outlet 22 are attenuated equally.
Wherein, the front sound emitting direction of the first speaker 30 is parallel or perpendicular to the first front sound emitting hole 11 or forms a set angle (wherein, parallel or perpendicular is a special form of the set angle, and the special form makes the phases of the sound at the first front sound emitting hole 11 and the first rear sound emitting hole 12 just opposite). The front sound emitting direction of the second speaker 40 is parallel to, perpendicular to or forms a set angle with the second front sound emitting hole 21 (where parallel to or perpendicular to is a special form of the set angle, and the special form makes the phases of the sound at the second front sound emitting hole 21 and the second rear sound emitting hole 22 just opposite). The front sound emitting directions of the first speaker 30 and the second speaker 40 are the sound emitting directions of the diaphragms thereof, respectively. As shown in fig. 1 and 3, the front sound emitting directions of the first speaker 30 and the second speaker 40 are parallel to the first front sound emitting hole 11 and the second front sound emitting hole 21. As shown in fig. 2, 4 and 5, the front sound emitting directions of the first speaker 30 and the second speaker 40 are perpendicular to the first front sound emitting hole 11 and the second front sound emitting hole 21.
The rear sound emitting direction of the first speaker 30 is parallel to, perpendicular to or forms a set angle with the first rear sound emitting hole 12 (where parallel or perpendicular is a special form of the set angle, and the special form makes the phases of the sound at the first front sound emitting hole 11 and the first rear sound emitting hole 12 just opposite). The rear sound emitting direction of the second speaker 40 is parallel to, perpendicular to or forms a set angle with the second rear sound emitting hole 22 (where parallel or perpendicular is a special form of the set angle, and the special form makes the phases of the sound at the second front sound emitting hole 21 and the second rear sound emitting hole 22 just opposite). The rear sound emitting direction is the sound transmission direction of the rear end of the loudspeaker. As shown in fig. 1, 2, 4 and 5, the rear sound emitting directions of the first speaker 30 and the second speaker 40 are respectively parallel to the first rear sound emitting hole 12 and the second rear sound emitting hole 22; as shown in fig. 3, the rear sound emitting directions of the first speaker 30 and the second speaker 40 are perpendicular to the first rear sound emitting hole 12 and the second rear sound emitting hole 22, respectively. The front sound emitting direction of the first speaker 30 is perpendicular to or parallel to the sound emitting directions of the first front sound emitting hole 11 and the first rear sound emitting hole 12, and the front sound emitting direction of the second speaker 40 is perpendicular to the sound emitting directions of the second front sound emitting hole 21 and the second rear sound emitting hole 22, so that the first acoustic cavity 10 and the second acoustic cavity 20 form a four-dipole, a user is in a strong sound field area, and other people are in a weak sound field area, and the purpose of preventing sound leakage is achieved.
Wherein, the set angle may be 0 to 360 °.
Preferably, the front sound emitting direction of the first speaker 30 and the sound emitting directions of the first front sound emitting hole 11 and the first rear sound emitting hole 12, and the front sound emitting direction of the second speaker 40 and the sound emitting directions of the second front sound emitting hole 21 and the second rear sound emitting hole 22 may be overlapped as a special state, as shown in fig. 1.
The center line of the first front sound outlet 11 is parallel to or coincides with the center line of the second front sound outlet 21. The center line of the first rear sound outlet 12 is parallel to or coincides with the center line of the second rear sound outlet 22, as shown in fig. 1.
The arrangement of the first acoustic cavity 10 and the second acoustic cavity 20 can be classified into the following cases: 1. the first acoustic cavity 10 and the second acoustic cavity 20 are arranged close to each other, and the directions of the sound holes can be freely arranged, so that a four-dipole can be formed. 2. The first acoustic cavity 10 and the second acoustic cavity 20 are formed by dividing a housing. 3. The first acoustic cavity 10 is symmetrically disposed with respect to the second acoustic cavity 20. The symmetrical arrangement may be planar, line, rotational.
The cross-sectional areas of the first front sound outlet 11 and the first rear sound outlet 12 are 1/3 to 2/3 of the effective vibration area of the diaphragm of the first speaker 30. The effective vibration area of the first front sound outlet 11 and the first rear sound outlet 12 is smaller than that of the diaphragm of the first loudspeaker 30, so that sound wave energy can be effectively gathered in the first acoustic cavity 10 and then conducted out of the first front sound outlet 11 and the first rear sound outlet 12.
The cross-sectional areas of the second front sound outlet 21 and the second rear sound outlet 22 are 1/3 to 2/3 of the effective vibration area of the diaphragm of the second speaker 40. Similarly, the effective vibration area of the second front sound outlet 21 and the second rear sound outlet 22 is smaller than that of the diaphragm of the second speaker 40, so that the sound wave energy can be effectively collected in the second acoustic cavity 20 and then conducted out of the second front sound outlet 21 and the second rear sound outlet 22.
The specific working principle is as follows: the first front sound outlet 11, the first rear sound outlet 12, the second front sound outlet 21 and the second rear sound outlet 22 are used as sound radiation ports; the first speaker 30 and the second speaker 40 are used as identical sound sources; the first acoustic cavity 10 is constructed exactly the same as the second acoustic cavity 20 and is a closed cavity except for the necessary holes. When the first speaker 30 and the second speaker 40 vibrate, the front and rear sound signals have the same amplitude and opposite phases, and the positions of the first front sound outlet 11, the first rear sound outlet 12, the second front sound outlet 21 and the second rear sound outlet 22 are used to form a transverse quadrupole as shown in fig. 1-2 or a longitudinal quadrupole as shown in fig. 3-4.
In other embodiments, as shown in fig. 5, the first rear sound chamber 14 is provided with a first bass tube 15 communicating with the outside, and the second rear sound chamber 24 is provided with a second bass tube 25 communicating with the outside, so that the bass effect is better. The first bass tube 15 and the second bass tube 25 may be located at any position 4mm away from the first rear sound outlet 12 and the second rear sound outlet 24, and the sound outlet directions of the first bass tube 15 and the second bass tube 25 are the same as, parallel to, or at other angles to the sound outlet directions of the first speaker 30 and the second speaker 40.
The structure of the invention can be widely applied to audio devices which are not contacted with ear canals or non-in-ear and semi-in-ear audio devices, such as hanging earphones, glasses, AR, VR and the like.
Compared with the prior art, the invention utilizes the first loudspeaker 30 and the second loudspeaker 40 which are arranged in parallel, and the first front sound outlet 11, the first rear sound outlet 12, the second front sound outlet 21 and the second rear sound outlet 22 are used as sound radiation ports to form a four-dipole sound field, and the four-dipole sound field enables a user to be in a strong sound field area, and other people are in a weak sound field area, thereby achieving the purpose of preventing sound leakage.
The technical contents of the present invention are further illustrated by the examples only for the convenience of the reader, but the embodiments of the present invention are not limited thereto, and any technical extension or re-creation based on the present invention is protected by the present invention. The protection scope of the invention is subject to the claims.
Claims (10)
1. An audio device for preventing sound leakage, characterized in that,
comprises a first acoustic cavity and a second acoustic cavity which are mutually independent,
a first speaker disposed within the first acoustic chamber,
the second loudspeaker is arranged in the second acoustic cavity;
the first acoustic cavity is provided with a first front sound outlet and a first rear sound outlet, and the first front sound outlet and the first rear sound outlet are isolated from each other through a first loudspeaker;
and the second acoustic cavity is provided with a second front sound outlet and a second rear sound outlet, and the second front sound outlet and the second rear sound outlet are mutually isolated through a second loudspeaker.
2. The audio device as claimed in claim 1, wherein the first and second acoustic cavities are identical in construction and are hermetically sealed.
3. The audio device for preventing sound leakage according to claim 1, wherein the first front sound outlet and the second front sound outlet have opposite or same sound outlet directions, or/and the first rear sound outlet and the second rear sound outlet have same or opposite sound outlet directions.
4. The audio device for preventing sound leakage according to claim 1,
the front sound outlet end of the first loudspeaker is communicated with the first front sound outlet hole, and the rear sound outlet end of the first loudspeaker is communicated with the first rear sound outlet hole;
and the front sound outlet end of the second loudspeaker is communicated with the second front sound outlet, and the rear sound outlet end of the second loudspeaker is communicated with the second rear sound outlet.
5. The audio device for preventing sound leakage according to claim 4, wherein the front sound outlet of the first speaker is connected to the first front sound outlet through a first front sound cavity, and the rear sound outlet is connected to the first rear sound outlet through a first rear sound cavity.
6. The audio device for preventing sound leakage according to claim 5, wherein the front sound outlet of the second speaker is connected to the second front sound outlet through a second front sound cavity, and the rear sound outlet is connected to the second rear sound outlet through a second rear sound cavity.
7. The audio device for preventing sound leakage according to claim 6,
the first front sound cavity and the second front sound cavity have the same structure; the distance between the sound outlet end of the first loudspeaker and the first front sound outlet is the same as the distance between the sound outlet end of the second loudspeaker and the second front sound outlet;
the first rear sound cavity and the second rear sound cavity have the same structure; the distance between the rear sound end of the first loudspeaker and the first rear sound outlet is the same as the distance between the rear sound end of the second loudspeaker and the second rear sound outlet.
8. The audio device for preventing sound leakage according to claim 6, wherein said first rear sound chamber is provided with a first bass tube communicating with the outside, and said second rear sound chamber is provided with a second bass tube communicating with the outside.
9. The audio device for preventing sound leakage according to claim 1,
the front sound emitting direction of the first loudspeaker is parallel to, perpendicular to or forms a set included angle with the first front sound emitting hole; the front sound emitting direction of the second loudspeaker is parallel to, perpendicular to or forms a set included angle with the second front sound emitting hole;
and/or the first and/or second light sources,
the rear sound outlet direction of the first loudspeaker is parallel to, perpendicular to or forms a set included angle with the first rear sound outlet; the rear sound outlet direction of the second loudspeaker is parallel to, perpendicular to or forms a set included angle with the second rear sound outlet.
10. The audio device for preventing sound leakage according to claim 1,
the cross-sectional areas of the first front sound outlet and the first rear sound outlet are 1/3-2/3 of the effective vibration area of the diaphragm of the first loudspeaker;
and/or the first and/or second light sources,
the cross-sectional areas of the second front sound outlet and the second rear sound outlet are 1/3-2/3 of the effective vibration area of the diaphragm of the second loudspeaker.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110210112.XA CN113316061A (en) | 2021-02-24 | 2021-02-24 | Audio device for preventing sound leakage |
| PCT/CN2021/103884 WO2022179029A1 (en) | 2021-02-24 | 2021-06-30 | Audio device for preventing sound leakage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110210112.XA CN113316061A (en) | 2021-02-24 | 2021-02-24 | Audio device for preventing sound leakage |
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| CN113316061A true CN113316061A (en) | 2021-08-27 |
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| CN202110210112.XA Pending CN113316061A (en) | 2021-02-24 | 2021-02-24 | Audio device for preventing sound leakage |
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| CN (1) | CN113316061A (en) |
| WO (1) | WO2022179029A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113784243A (en) * | 2021-08-31 | 2021-12-10 | 歌尔光学科技有限公司 | Loudspeaker module and head-mounted device |
| WO2022166095A1 (en) * | 2021-02-03 | 2022-08-11 | 深圳市大十科技有限公司 | Sound privacy protection device |
| WO2024001188A1 (en) * | 2022-06-29 | 2024-01-04 | 广州视源电子科技股份有限公司 | Loudspeaker module and intelligent head-mounted device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104066031B (en) * | 2013-03-22 | 2018-12-21 | 南京中兴新软件有限责任公司 | The application method of sound chamber, the device including sound chamber, mobile terminal and sound chamber |
| CN209562784U (en) * | 2019-04-30 | 2019-10-29 | 歌尔科技有限公司 | Terminal installation |
| CN111225086B (en) * | 2019-11-29 | 2021-06-22 | 维沃移动通信有限公司 | Electronic device |
| CN110944079B (en) * | 2019-11-29 | 2021-06-04 | 维沃移动通信有限公司 | Electronic device |
-
2021
- 2021-02-24 CN CN202110210112.XA patent/CN113316061A/en active Pending
- 2021-06-30 WO PCT/CN2021/103884 patent/WO2022179029A1/en unknown
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022166095A1 (en) * | 2021-02-03 | 2022-08-11 | 深圳市大十科技有限公司 | Sound privacy protection device |
| CN113784243A (en) * | 2021-08-31 | 2021-12-10 | 歌尔光学科技有限公司 | Loudspeaker module and head-mounted device |
| WO2024001188A1 (en) * | 2022-06-29 | 2024-01-04 | 广州视源电子科技股份有限公司 | Loudspeaker module and intelligent head-mounted device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022179029A1 (en) | 2022-09-01 |
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