阅读说明：本技术 一种带音梁及音隧的全频段麦克风 (Full-band microphone with sound beam and sound tunnel ) 是由 金海鸥 吴念博 何新喜 朱信智 李碧英 杨萍 于 2021-09-03 设计创作，主要内容包括：一种带音梁及音隧的全频段麦克风,包括振膜、线圈、膜支架、垫圈、铁垫及磁铁；振膜呈碟形,外缘结合于膜支架上表面,内缘结合于线圈上端；膜支架和垫圈均呈环状,两者同心构成具有中心孔的组合体；线圈嵌设于中心孔中,铁垫嵌设于线圈中,磁铁定位于铁垫下方；振膜的至少一侧表面上架设有桥式音梁,桥式音梁呈环状并位于线圈上端外侧；振膜的表面开设有至少两沟槽,且各沟槽呈放射状排布,将位于桥式音梁外侧的振膜表面等分成多块共振区；各沟槽均横穿桥式音梁,并以沟槽长度方向与桥式音梁垂直；沟槽凹设于振膜的表面形成音隧。本发明解决了麦克风无法有效谐振全频段声音细节的问题,构成麦克风能够在全频段有效谐振,达到高保真收音的效果。(A full-band microphone with a sound beam and a sound tunnel comprises a vibrating diaphragm, a coil, a diaphragm bracket, a gasket, an iron pad and a magnet; the vibrating diaphragm is in a disc shape, the outer edge of the vibrating diaphragm is combined with the upper surface of the diaphragm support, and the inner edge of the vibrating diaphragm is combined with the upper end of the coil; the membrane bracket and the gasket are both annular and form a combined body with a central hole concentrically; the coil is embedded in the central hole, the iron pad is embedded in the coil, and the magnet is positioned below the iron pad; a bridge type sound beam is erected on the surface of at least one side of the vibrating diaphragm, and the bridge type sound beam is annular and is positioned on the outer side of the upper end of the coil; at least two grooves are formed in the surface of the vibrating diaphragm, the grooves are radially distributed, and the surface of the vibrating diaphragm positioned on the outer side of the bridge-type sound beam is equally divided into a plurality of resonance areas; each groove transversely penetrates through the bridge type sound beam and is vertical to the bridge type sound beam in the length direction of the groove; the groove is concavely arranged on the surface of the vibrating diaphragm to form a sound tunnel. The invention solves the problem that the microphone can not effectively resonate full-band sound details, and the microphone can effectively resonate in the full band, thereby achieving the effect of high fidelity sound reception.)

1. The utility model provides a full frequency channel microphone of voiced sound roof beam and sound tunnel which characterized in that:

comprises a diaphragm (3), a coil (1), a membrane bracket (2), a gasket (10), an iron pad (11) and a magnet (12);

the vibrating diaphragm (3) is in a disc shape, the outer edge of the vibrating diaphragm is combined with the upper surface of the diaphragm support (2), and the inner edge of the vibrating diaphragm is combined with the upper end of the coil (1);

the membrane support (2) and the gasket (10) are both annular and concentrically arranged, and the membrane support (2) is connected above the gasket (10) to form a combined body with a central hole; the coil (1) is annular and is embedded in the central hole of the combination body, and the outer side surface of the coil is attached to the hole wall of the central hole; the iron pad (11) is embedded in the coil (1), and the outer peripheral wall of the iron pad (11) is attached to the inner side face of the coil (1); the magnet (12) is positioned below the iron pad (11);

wherein, a bridge type sound beam (4) is erected on at least one side surface of the vibrating diaphragm (3), and the bridge type sound beam (7) is annular and is positioned outside the upper end of the coil (1) in the horizontal direction of the microphone;

the vibrating diaphragm (3) is also provided with at least two grooves (5) on the same surface provided with the bridge type sound beam (4), and the grooves (5) are radially arranged by taking the center of the microphone in the horizontal direction as a reference, so that the surface of the vibrating diaphragm (3) positioned on the outer side of the bridge type sound beam (4) is equally divided into a plurality of resonance areas (6); each groove (5) transversely penetrates through the bridge type sound beam (4) in the horizontal direction of the microphone, and the length direction of each groove (5) is perpendicular to the bridge type sound beam (4);

the groove (5) is concavely arranged on the surface of the diaphragm (3) to form a sound tunnel.

2. The full band microphone with the tone beam and the tone tunnel of claim 1, wherein: the membrane fixing device further comprises a cover body (13), the cover body (13) is connected above the membrane support (2), a first cavity (15) is formed between the cover body and the membrane support (2), and the diaphragm (3) is located in the first cavity (15).

3. The full band microphone with the tone beam and the tone tunnel of claim 1, wherein: the magnetic valve also comprises a base (14), the base (14) is connected below the gasket (10) and forms a second cavity (16) with the gasket (10), and the magnet is positioned in the second cavity (16).

4. The full band microphone with the tone beam and the tone tunnel of claim 1, wherein: the vibrating diaphragm (3) is also provided with a plurality of grooves or convex strips (8), and the grooves or convex strips (8) are radially arranged.

5. The full band microphone with the tone beam and the tone tunnel of claim 1, wherein: the vibrating diaphragm (3) is divided into a high-sound area of an outer section, a middle-sound area of a middle section and a low-sound area of an inner section from a sound-producing frequency band;

the wall thickness of the diaphragm (3) is gradually increased from outside to inside, the wall thickness of a low-sound area is larger than that of a middle-sound area, and the wall thickness of the middle-sound area is larger than that of a high-sound area;

the bridge type sound beam (4) is located in the bass region.

6. The full band microphone with the tone beam and the tone tunnel of claim 1, wherein: the bottom of the bridge-type sound beam (4) is provided with a bridge opening (7), the bridge opening (7) penetrates in the width direction of the bridge-type sound beam (4), and the opening below the bridge opening (7) corresponds to the groove (5).

7. The full band microphone with the tone beam and the tone tunnel of claim 1, wherein: when the vibrating diaphragm (3) is horizontal, the center line of the bridge type sound beam (4) in the vertical direction is overlapped with the center line of the vibrating diaphragm (3) in the vertical direction.

8. The full band microphone with the tone beam and the tone tunnel of claim 1, wherein: each groove (5) is an arc-shaped groove.

9. The full band microphone with the tone beam and the tone tunnel of claim 1, wherein: the length of the groove (5) is smaller than the width of the vibrating diaphragm (3), and smooth transition surfaces are arranged between the two outer ends of the groove (5) and the upper surface of the vibrating diaphragm (3).

Technical Field

The invention relates to a microphone, in particular to a full-band microphone with a sound beam and a sound tunnel.

Background

The microphone, known as a microphone, is translated from an english microphone (microphone), and is also called a microphone or a microphone. A microphone is an energy conversion device that converts a sound signal into an electrical signal. There are classes of moving coil, capacitor, electret and recently emerging silicon micro-microphones, but also liquid microphones and laser microphones. Most microphones are moving-coil microphones (Dynamic microphones) whose basic structure comprises three parts, namely a coil, a diaphragm and a permanent magnet. When sound waves enter the microphone, the diaphragm is subjected to the pressure of the sound waves to generate vibration, the coil connected with the diaphragm starts to move in a magnetic field, and the coil generates induced current according to Faraday's law and Lenz's law.

The conventional microphone has the common problems that:

when a diaphragm of a microphone receives sound waves emitted by an external sound source, due to the fact that the diaphragm has inherent resonant frequency, if the diaphragm exceeds a certain range of a resonant frequency area, a high-pitch area and a low-pitch area cannot be effectively resonated, received sound is converted from sound to electricity, the high-pitch area cannot be lightened out due to the tone quality restored from electricity to sound, the low-pitch area is not perfectly round and smooth, and the sound fidelity is poor. The reason for this is that the conventional diaphragm cannot satisfy a good wide-band vibration from a high-pitch region to a low-pitch region, i.e., cannot simultaneously adapt to a wide frequency change resonance and vibration of the high-pitch region, the middle-pitch region and the low-pitch region, and therefore cannot collect all sound details of a full frequency band when receiving sound. In conclusion, the traditional microphone has unreasonable structural design, and is not beneficial to the diaphragm to exert good sound wave vibration from a high-pitch area to a low-pitch area.

Therefore, how to solve the above-mentioned deficiencies of the prior art is a problem to be solved by the present invention.

Disclosure of Invention

The invention aims to provide a full-band microphone with a sound beam and a sound tunnel.

In order to achieve the purpose, the invention adopts the technical scheme that:

a full-band microphone with a sound beam and a sound tunnel comprises a vibrating diaphragm, a coil, a diaphragm bracket, a gasket, an iron pad and a magnet;

the diaphragm is disc-shaped, the outer edge of the diaphragm is combined with the upper surface of the diaphragm support, and the inner edge of the diaphragm is combined with the upper end of the coil;

the membrane bracket and the gasket are both annular and concentrically arranged, and the membrane bracket is connected above the gasket to form a combination body with a central hole; the coil is annular and is embedded in the central hole of the combination body, and the outer side surface of the coil is attached to the hole wall of the central hole; the iron pad is embedded in the coil, and the outer peripheral wall of the iron pad is attached to the inner side face of the coil; the magnet is positioned below the iron pad;

wherein, at least one side surface of the vibrating diaphragm is provided with a bridge type sound beam in a ring shape and is positioned outside the upper end of the coil in the horizontal direction of the microphone;

the vibrating diaphragm is also provided with at least two grooves on the same surface provided with the bridge type sound beam, and the grooves are radially distributed by taking the center of the microphone in the horizontal direction as a reference, so that the surface of the vibrating diaphragm positioned on the outer side of the bridge type sound beam is equally divided into a plurality of resonance areas; each groove crosses the bridge type sound beam in the horizontal direction of the microphone and is vertical to the bridge type sound beam in the length direction of the groove;

the groove is concavely arranged on the surface of the diaphragm to form a sound tunnel.

The relevant content in the above technical solution is explained as follows:

1. in the above scheme, the bridge type sound beam is located at the outer side of the upper end of the coil in the horizontal direction of the microphone, so that the design can be helpful for gathering external sounding vibration in the area between the bridge type sound beam and the coil on the vibrating diaphragm and conducting the collected external sounding vibration to the coil to drive the coil to vibrate.

2. In the above-mentioned scheme, "each of the grooves is radially and uniformly arranged with reference to the center of the horizontal direction of the diaphragm", which is helpful for rapidly transmitting the vibration of the diaphragm from the periphery to the central region through the radial sound tunnel (i.e., the sound tunnel) formed by the grooves.

3. In the above scheme, the liquid crystal display device further comprises a cover body, the cover body is connected above the membrane support, a first cavity is formed between the cover body and the membrane support, and the diaphragm is located in the first cavity.

The cover body is provided with a through hole for communicating the first cavity with the outside, so that external sound waves can enter the first cavity and can be conducted to the vibrating diaphragm.

4. In the above scheme, the magnet further comprises a base, the base is connected below the gasket, a second chamber is formed between the base and the gasket, and the magnet is located in the second chamber.

5. In the scheme, the vibrating diaphragm is divided into a high-sound area at the outer section, a middle-sound area at the middle section and a low-sound area at the inner section from a sound-producing frequency band; the bridge type sound beam is positioned in the bass region; the wall thickness of the diaphragm is gradually increased from outside to inside, the wall thickness of the low-sound area is larger than that of the middle-sound area, and the wall thickness of the middle-sound area is larger than that of the high-sound area.

By the design, the thicker bass region is arranged close to the center, so that the bass region of the vibrating diaphragm can be more easily resonated with low-frequency vibration with lower frequency and larger amplitude, and the restored sound can emit more muddy and smooth bass; through setting up thinner high pitch district in the position of keeping away from the center, can make the high pitch district of vibrating diaphragm produce the resonance with the frequency is higher more easily, the less high-frequency vibration of amplitude for sound after the reduction sends more penetrating, bright high pitch, and then makes the microphone can be in full frequency channel effective resonance, makes tone quality, tone quality that sound after the reduction produced all effectively promote, reaches the effect of high-fidelity.

6. In the above scheme, when the diaphragm is horizontal, the center line of the bridge type sound beam in the up-down direction overlaps with the center line of the diaphragm in the up-down direction, so as to improve the tone quality and the tone color.

7. In the above scheme, the groove is an arc-shaped groove, so that the thickness of the diaphragm can be reduced as much as possible, and the influence on the resonance of the diaphragm is avoided.

8. In the above scheme, smooth transition surfaces are arranged between the outer end of the groove and the surface of the vibrating diaphragm.

9. In the above scheme, still be equipped with several recesses or sand grip on the vibrating diaphragm, and each recess or sand grip are radially arranged to this promotes the structural strength of vibrating diaphragm. The grooves or ribs may be of a straight design to avoid interfering acoustic tunnels.

10. In the above scheme, the bottom of bridge type sound beam is equipped with the bridge opening, and this bridge opening runs through the setting in the width direction of bridge type sound beam, and the below of bridge opening is uncovered and is corresponded the slot is favorable to promoting vibration response rate.

The working principle and the advantages of the invention are as follows:

the invention relates to a full-band microphone with a sound beam and a sound tunnel, which comprises a vibrating diaphragm, a coil, a diaphragm bracket, a gasket, an iron pad and a magnet; the vibrating diaphragm is in a disc shape, the outer edge of the vibrating diaphragm is combined with the upper surface of the diaphragm support, and the inner edge of the vibrating diaphragm is combined with the upper end of the coil; the membrane bracket and the gasket are both annular and form a combined body with a central hole concentrically; the coil is embedded in the central hole, the iron pad is embedded in the coil, and the magnet is positioned below the iron pad; a bridge type sound beam is erected on the surface of at least one side of the vibrating diaphragm, and the bridge type sound beam is annular and is positioned on the outer side of the upper end of the coil; at least two grooves are formed in the surface of the vibrating diaphragm, the grooves are radially distributed, and the surface of the vibrating diaphragm positioned on the outer side of the bridge-type sound beam is equally divided into a plurality of resonance areas; each groove transversely penetrates through the bridge type sound beam and is vertical to the bridge type sound beam in the length direction of the groove; the groove is concavely arranged on the surface of the vibrating diaphragm to form a sound tunnel.

Compared with the prior art, the microphone aims to solve the problem that the existing microphone cannot give consideration to high, middle and low sound regions and has good resonance when receiving sound, and improves the design of the existing microphone, particularly the diaphragm in the microphone. The concrete aspects are as follows: firstly, erecting a bridge type sound beam on the surface of a vibrating diaphragm; secondly, a radial groove is formed in the surface of the diaphragm, and a radial sound tunnel is formed in the surface of the diaphragm by the radial groove.

The invention aims at the problems that the high-pitch area of the sound recovered by the existing microphone after receiving the sound is not bright, but the low-pitch area is not perfectly round, deeply discusses and researches the design and the vibration mechanism of the microphone, and finds out that the main reason that the existing microphone receives the poor vibration of the high-pitch area and the low-pitch area is caused by the unreasonable design of the diaphragm. Therefore, the inventor breaks through the restriction of the composition design of the traditional microphone, and provides an improved design scheme of the invention, wherein the improved design scheme changes the diaphragm from the traditional free vibration mode to the current standard vibration mode, and solves the problems that the full-band sound details cannot be effectively resonated when the microphone receives the sound, so that the high-pitch area of the restored sound cannot be bright, and the low-pitch area is thick and round. Practice proves that the improved design scheme has outstanding substantive features and remarkable technical progress, and obvious technical effect is obtained.

Due to the application of the technical scheme, compared with the diaphragm of the traditional microphone, the diaphragm of the invention has the following advantages and effects:

1. the bridge type sound beam is arranged on the surface of the vibrating diaphragm, and because bass has large amplitude and low frequency relative to treble, bass resonance is concentrated in the area of the vibrating diaphragm close to the center, treble resonance is concentrated in the peripheral area of the vibrating diaphragm, the strength of the central area of the vibrating diaphragm is enhanced, and the bridge type sound beam plays an important role in improving the bass tone and the tone quality with high fidelity. Because the thickness of the diaphragm is a thickness-gradually-changing structure (namely, the thickness is thin outside and the thickness is thick inside) with thick central area and thin periphery, the strength of the central area of the diaphragm is enhanced, the thickness difference between the central area of the diaphragm and the peripheral area is relatively changed, and the diaphragm also has a beneficial effect on improving high-fidelity high-tone color and tone quality.

2. The surface of the diaphragm is provided with the radial groove which actually forms the radial sound tunnel on the diaphragm, and the diaphragm can quickly transmit the vibration from the peripheral edge to the center of the diaphragm through the radial sound tunnel (namely a sound tunnel) after receiving the vibration, so that the details of the high-pitch frequency band of the sound can be better received.

3. The invention designs the sound beam into a bridge type sound beam, and particularly designs a bridge opening (a gap) on one side of the sound beam, so that the sound beam is like a bridge arch structure. When the sound beam is erected on the sound tunnel, vibration is transmitted through the sound tunnel more favorably, and resonance of the vibration membrane and quick vibration response of the coil are more favorably realized.

4. According to the invention, through the design of the bridge type sound beam and the radial grooves, N resonance areas with the same number as the grooves are equally divided on the diaphragm. When the microphone works, external vibration is transmitted to the central area of the vibrating diaphragm from each resonance area through sound tunnel transmission, so that vibration of an external sound source is amplified to resonance of the vibrating diaphragm. Each resonance area can generate an acoustic wave quantity, and an acoustic wave quantity is added to the acoustic wave quantity to form N +1 acoustic wave quantities. The sound wave quantity is the number of sound waves, and the sound wave quantity directly influences the tone color and tone quality of the diaphragm. The design of the invention can obviously improve the tone color and the tone quality of the high-pitch area and the low-pitch area after the sound-electricity-sound restoration.

5. The bridge type sound beam and the groove can be arranged on the upper surface of the vibrating diaphragm, can also be arranged on the lower surface of the vibrating diaphragm, and can also be arranged on the upper surface and the lower surface of the vibrating diaphragm.

Drawings

FIG. 1 is a schematic structural diagram of a first embodiment of the present invention;

FIG. 2 is a diagram of a combination of a diaphragm, a bridge-type beam, and a coil according to an embodiment of the present invention;

FIG. 3 is a top view of FIG. 2;

FIG. 4 is a schematic sectional view taken along line A-A of FIG. 3;

FIG. 5 is a partial perspective view of a bridge-type sound beam according to an embodiment of the present invention;

FIG. 6 is a partial front view of a bridge-type sound beam according to an embodiment of the present invention;

FIG. 7 is an exploded view of a first embodiment of the present invention;

FIG. 8 is a diagram showing a combination of a diaphragm, a bridge-type beam, and a coil according to an embodiment of the present invention;

FIG. 9 is a top view of FIG. 8;

fig. 10 is a schematic sectional view taken along line B-B in fig. 9.

FIG. 11 is a partial perspective view of a second bridge-type sound beam according to an embodiment of the present invention;

fig. 12 is a partial front view of a second bridge type sound beam according to an embodiment of the present invention.

In the above drawings: 1. a coil; 2. a membrane scaffold; 3. vibrating diaphragm; 4. a bridge-type sound beam; 5. a trench; 6. a resonance region; 7. a bridge opening; 8. a groove or a rib; 9. a dust cover; 10. a gasket; 11. an iron pad; 12. a magnet; 13. a cover body; 14. a base; 15. a first chamber; 16. a second chamber; 17. a rubber ring.

Detailed Description

The invention is further described with reference to the following figures and examples:

the present disclosure will be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the disclosure may be shown and described, and which, when modified and varied by the techniques taught herein, can be made by those skilled in the art without departing from the spirit and scope of the disclosure.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The singular forms "a", "an", "the" and "the", as used herein, also include the plural forms.

The terms "first," "second," and the like, as used herein, do not denote any order or importance, nor do they denote any order or importance, but rather are used to distinguish one element from another element or operation described in such technical terms.

As used herein, "connected" or "positioned" refers to two or more elements or devices being in direct physical contact with each other or in indirect physical contact with each other, and may also refer to two or more elements or devices being in operation or acting on each other.

As used herein, the terms "comprising," "including," "having," and the like are open-ended terms that mean including, but not limited to.

As used herein, the term (terms), unless otherwise indicated, shall generally have the ordinary meaning as commonly understood by one of ordinary skill in the art, in this written description and in the claims. Certain words used to describe the disclosure are discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the disclosure.

The terms "upper" and "lower" used herein are directional terms, and are used only for describing the positional relationship between the structures, and are not intended to limit the protection schemes and the actual implementation directions.

The first embodiment is as follows: referring to fig. 1 to 7, a full-band microphone with a sound beam and a sound tunnel includes a diaphragm 3, a coil 1, a membrane holder 2, a gasket 10, an iron pad 11, and a magnet 12.

The diaphragm 3 is disk-shaped, and has an outer edge coupled to the upper surface of the diaphragm support 2 and an inner edge coupled to the upper end of the coil 1.

The membrane bracket 2 and the gasket 10 are both annular and concentrically arranged, the membrane bracket 2 is connected above the gasket 10, and a rubber ring 17 is arranged between the two, so that a combination body with a central hole is formed; the coil 1 is annular and is embedded in the central hole of the combination body, and the outer side surface of the coil 1 is attached to the hole wall of the central hole; the iron pad 11 is embedded in the coil 1, and the outer peripheral wall of the iron pad 11 is attached to the inner side surface of the coil 1; the magnet 12 is positioned below the iron pad 11.

The membrane module further comprises a cover 13, wherein the cover 13 is connected above the membrane support 2, a first cavity 15 is formed between the cover 13 and the membrane support 2, and the diaphragm 3 is located in the first cavity 15. The cover 13 may have a through hole for communicating the first cavity 15 with the outside, so that external sound waves can enter the first cavity 15 and be transmitted to the diaphragm 3.

The magnetic bearing further comprises a base 14, wherein the base 14 is connected below the gasket 10, a second cavity 16 is formed between the base 14 and the gasket 10, and the magnet is located in the second cavity 16.

Wherein, the upper side surface of the vibrating diaphragm 3 is provided with a bridge type sound beam 4, the bridge type sound beam 4 is annular and is positioned at the outer side of the upper end of the coil 1 in the horizontal direction of the microphone, and has a distance with the dust cover 9 of the coil 1. Therefore, the design can help the area between the bridge type sound beam 4 and the coil 1 on the vibrating diaphragm 3 collect the external sound-producing vibration and conduct the vibration to the coil 1 to drive the coil 1 to vibrate.

The vibrating diaphragm 3 is further provided with at least two grooves 5 on the same surface provided with the bridge-type sound beam 4, and the grooves 5 are radially arranged by taking the center of the microphone in the horizontal direction as a reference, so that the surface of the vibrating diaphragm 3 positioned on the outer side of the bridge-type sound beam 4 is equally divided into a plurality of resonance areas 6, and meanwhile, the vibration of the vibrating diaphragm 3 is rapidly transmitted to the central area from the periphery through a radial sound tunnel (namely a sound tunnel) formed by the grooves 5. Each groove 5 crosses the bridge sound beam 4 in the horizontal direction of the microphone, and is perpendicular to the bridge sound beam 4 in the longitudinal direction of the groove 5.

The groove 5 is concavely arranged on the surface of the diaphragm 3 to form a sound tunnel.

Preferably, a plurality of grooves or protruding strips 8 are further arranged on the diaphragm 3, and the grooves or protruding strips 8 are radially arranged, so that the structural strength of the diaphragm 3 is improved. The grooves or ribs 8 may be of a straight design to avoid interference with the sound tunnel.

Preferably, the diaphragm 3 is divided into an outer high-sound region, a middle-sound region and an inner low-sound region from the sounding frequency band; the wall thickness of the diaphragm 3 is gradually increased from outside to inside, the wall thickness of a low-sound area is larger than that of a middle-sound area, and the wall thickness of the middle-sound area is larger than that of a high-sound area; the bridge sound beam 4 is located in the bass region.

By the design, the thicker bass region is arranged at a position close to the center, so that the bass region of the vibrating diaphragm 3 can be more easily resonated with low-frequency vibration with lower frequency and larger amplitude, and the restored sound can emit more muddy and smooth bass; through setting up thinner high pitch area in the position of keeping away from the center, can make the high pitch area of vibrating diaphragm 3 produce the resonance with the frequency is higher more easily, the less high-frequency vibration of amplitude for sound after the reduction sends more penetrating, bright high pitch, and then makes the microphone can be in full frequency channel effective resonance, makes tone quality, tone quality that sound after the reduction produced all effectively promote, reaches the effect of high-fidelity.

Preferably, the bottom of the bridge-type sound beam 4 is provided with a bridge opening 7, the bridge opening 7 is arranged in the width direction of the bridge-type sound beam 4 in a penetrating manner, and an opening below the bridge opening 7 corresponds to the groove 5, so that the improvement of the vibration response rate is facilitated.

Preferably, when the vibrating diaphragm 3 is horizontal, the center line of the bridge-type sound beam 4 in the vertical direction overlaps with the center line of the vibrating diaphragm 3 in the vertical direction, so as to improve the sound quality and the sound color.

Preferably, each of the grooves 5 is an arc-shaped groove, so that the thickness of the diaphragm 3 is reduced as much as possible, and the influence on the resonance of the diaphragm 3 is avoided.

Preferably, the length of the groove 5 is smaller than the width of the diaphragm 3, and smooth transition surfaces are arranged between two outer ends of the groove 5 and the upper surface of the diaphragm 3.

Example two: referring to fig. 8 to 12, the difference from the first embodiment is that the bridge-type sound beam 4 is mounted on the lower surface of the diaphragm 3. Other parts are the same as those of the first embodiment, and thus are not described in detail.

Other embodiments and structural variations of the present invention are described below:

1. in the above embodiments, the illustrated microphones are only used for illustration, and the structure is not used to limit the protection scope of the present invention, and other microphones with similar structures should be covered by the protection scope of the present invention if the technical features of the present invention are adopted.

2. In the above embodiment, the bridge-type sound beam 4 is provided with the bridge hole 7, but the present invention is not limited to this, and other structures facilitating the transmission of vibration through the sound tunnel, such as the bridge hole 7, may be provided instead of the bridge hole 7, as will be readily understood and accepted by those skilled in the art.

3. In the above embodiments, the number of the bridge-type sound beams 4 is not limited to one, and may be a plurality of parallel beams or other designs that help to reinforce the load in the middle of the diaphragm 3, which is easily understood and accepted by those skilled in the art.

4. In the above embodiments, the bridge-type sound beam 4 and the groove 5 may be located on the upper surface of the diaphragm 3 (embodiment one), or located on the lower surface of the diaphragm 3 (embodiment two), or located on both the upper and lower surfaces of the diaphragm 3 (not shown).

5. In the above embodiment, the groove 5 is an arc-shaped groove. However, the present invention is not limited thereto, and the groove 5 may be designed in other shapes, such as a concave structure like V, U, W, etc. As would be readily understood and accepted by those skilled in the art.

6. In the above embodiments, the material of the diaphragm 3 may be a metal material, a carbon fiber material, a composite material, or a paper material.

Compared with the prior art, the microphone aims to solve the problem that the existing microphone cannot give consideration to high, middle and low sound regions and has good resonance when receiving sound, and improves the design of the existing microphone, particularly the diaphragm in the microphone. The concrete aspects are as follows: firstly, erecting a bridge type sound beam on the surface of a vibrating diaphragm; secondly, a radial groove is formed in the surface of the diaphragm, and a radial sound tunnel is formed in the surface of the diaphragm by the radial groove.

The invention aims at the problems that the high-pitch area of the sound recovered by the existing microphone after receiving the sound is not bright, but the low-pitch area is not perfectly round, deeply discusses and researches the design and the vibration mechanism of the microphone, and finds out that the main reason that the existing microphone receives the poor vibration of the high-pitch area and the low-pitch area is caused by the unreasonable design of the diaphragm. Therefore, the inventor breaks through the restriction of the composition design of the traditional microphone, and provides an improved design scheme of the invention, wherein the improved design scheme changes the diaphragm from the traditional free vibration mode to the current standard vibration mode, and solves the problems that the full-band sound details cannot be effectively resonated when the microphone receives the sound, so that the high-pitch area of the restored sound cannot be bright, and the low-pitch area is thick and round. Practice proves that the improved design scheme has outstanding substantive features and remarkable technical progress, and obvious technical effect is obtained.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.