CN214205792U - Conference microphone with noise suppression and echo elimination functions - Google Patents

Abstract

The utility model relates to a technical field of conference microphone specifically is a conference microphone with noise suppression and echo elimination function, the inside of base is equipped with the cavity, fixed communicating pipe that is equipped with in the middle of top one side of base, communicating pipe with the cavity is linked together. The utility model discloses well sound is leading it by the guide cylinder when picking up the sound hole, avoid sound to spread all around at the in-process of propagating, reduce and cause the echo with bumping between the inner wall of the base, first acoustic panel can absorb the sound of collision on the cavity inner wall, the effectual production that reduces the echo, the droplet will be absorbed by the sponge that absorbs water, it causes the damage to avoid the droplet to drip on the vibrating diaphragm, avoid the droplet to produce the influence to the vibrations sound of vibrating diaphragm simultaneously, thereby can realize the noise suppression and eliminate the effect of echo, definition when can effectual improvement meeting microphone uses.

Description

Conference microphone with noise suppression and echo elimination functions

Technical Field

The utility model relates to a technical field of meeting microphone specifically is a meeting microphone with noise suppression and echo elimination function.

Background

With the rapid development of electronic technology, conference microphones are widely used in various medium and large conferences, and conference microphones are also called omnidirectional microphones, which are portable conference telephone products and can not only carry out high-quality internet telephone conferences on the internet through the interface of a computer; and can be used as a hand-free talking device of a loudspeaker and a microphone of the wireless mobile phone through the earphone interface to carry out high-quality wireless mobile phone conference. The model is classic, generous and convenient to carry. The microphone pickup direction can be selected and set according to the meeting scene, and the microphone pickup direction is suitable for being used in places such as meeting rooms and offices.

But echoes are often generated in use with conference microphones. The echo is generated by the formation of an acoustic loop between the loudspeaker and the microphone. Meanwhile, in the speaking process, spray generated by people can be sprayed onto the conference microphone and then falls on the vibration diaphragm inside the conference microphone from the surface of the microphone, so that the vibration diaphragm is wet and can generate an echo to sound, the echo can be an echo by a voice signal acquired by a voice acquisition device of the microphone, the echo signal and a voice signal sent by a user at the moment are acquired by a voice acquisition device in the microphone, the quality of transmission of voice information can be influenced, meanwhile, the sound can collide with the inner wall of the placing box after being sent, noise can be generated, and the definition of the transmission of the voice information can be influenced.

Accordingly, those skilled in the art have provided a conference microphone having noise suppression and echo cancellation functions to solve the problems set forth in the background art described above.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a conference microphone with noise suppression and echo elimination function to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a conference microphone with noise suppression and echo elimination functions comprises a base, wherein a cavity is formed in the base, a communication pipe is fixedly arranged in the middle of one side above the base and is communicated with the cavity, a protective net is arranged at one end, far away from the base, of the communication pipe, a water absorbing sponge is arranged at one side of the protective net, through holes are formed in the water absorbing sponge at equal distances, a supporting screen plate is arranged at one side, far away from the protective net, of the water absorbing sponge, the supporting screen plate and the protective net are both connected with the communication pipe through threaded connection devices, a partition plate is fixedly arranged below the supporting screen plate and located in the communication pipe, sound pickup holes are formed in the partition plate at equal distances, a guide cylinder is fixedly arranged at one end of each sound pickup hole and located on the partition plate, a vibration membrane is arranged below the guide cylinder and located in the cavity, the vibration collector is characterized in that the vibration diaphragm is electrically connected with the vibration collector, the output end of the vibration collector is electrically connected with four speakers, the speakers are arranged on four side walls of the base, the communicating pipe and the inner wall of the cavity are fixedly provided with first sound-absorbing boards, and the bottom of the inner side of the cavity is fixedly provided with a second sound-absorbing board.

As a further aspect of the present invention: the threaded connection device comprises a threaded ring fixedly arranged at the end part of the protective net, a threaded hole matched with the threaded ring is formed in the end part of the communicating pipe and below the threaded ring, a slot is formed in the end part of the inner side of the threaded ring, and the end part of the supporting screen plate is arranged inside the slot.

As a further aspect of the present invention: the inside bottom mounting of screw hole is equipped with the sealing washer, one side of sealing washer with the screw ring contacts.

As a further aspect of the present invention: the lateral wall of base has been seted up and has been placed the chamber, the speaker is located place the inside in chamber.

As a further aspect of the present invention: one side of placing the chamber is equipped with the dust screen, the tip of dust screen with base fixed connection.

As a further aspect of the present invention: one side of the base, which is far away from the communicating pipe, is fixedly provided with four supporting rods, and the other ends of the supporting rods are fixedly provided with shockproof foot pads.

Compared with the prior art, the beneficial effects of the utility model are that: the sound that people said will spread into communicating pipe through communicating pipe, simultaneously spread into the inside of cavity through the pickup hole on the baffle, sound will be guided it by the guide cylinder when picking up the sound hole, avoid sound to spread all around at the in-process of propagating, reduce and cause the echo with bumping between the base inner wall, fixed being equipped with first abatvoix on the cavity inner wall simultaneously, can absorb the sound of collision on the cavity inner wall, the effectual production that reduces the echo, simultaneously, people talk produced droplet will be absorbed by the sponge that absorbs water, it causes the damage to avoid droplet to drop on the vibrating diaphragm, avoid droplet to produce the influence to the vibrations sound of vibrating diaphragm simultaneously, thereby can realize the effect of noise suppression and elimination echo, can effectually improve the definition when meeting microphone uses.

Drawings

Fig. 1 is a schematic structural diagram of a conference microphone with noise suppression and echo cancellation functions;

fig. 2 is a sectional view of a conference microphone having noise suppression and echo cancellation functions;

fig. 3 is an enlarged view of a portion a in fig. 2.

In the figure: 1. a base; 2. a cavity; 3. a communicating pipe; 4. a protective net; 5. a water-absorbing sponge; 6. supporting the screen plate; 7. a partition plate; 8. a sound pickup hole; 9. a guide cylinder; 10. vibrating the diaphragm; 11. vibrating the collector; 12. a speaker; 13. a first sound-absorbing panel; 14. a threaded ring; 15. a threaded hole; 16. a slot; 17. a seal ring; 18. a placement chamber; 19. a dust screen; 20. shockproof foot pad.

Detailed Description

Referring to fig. 1-3, in an embodiment of the present invention, a conference microphone with noise suppression and echo elimination functions includes a base 1, a cavity 2 is disposed inside the base 1, a communication pipe 3 is fixedly disposed in the middle of one side above the base 1, the communication pipe 3 is communicated with the cavity 2, a protective net 4 is disposed at one end of the communication pipe 3 away from the base 1, a water-absorbing sponge 5 is disposed at one side of the protective net 4, through holes are disposed at equal intervals on the water-absorbing sponge 5, a supporting screen 6 is disposed at one side of the water-absorbing sponge 5 away from the protective net 4, the supporting screen 6 and the protective net 4 are both connected with the communication pipe 3 through a threaded connection device, a partition 7 is fixedly disposed below the supporting screen 6 and inside the communication pipe 3, sound pickup holes 8 are disposed at equal intervals on the partition 7, a guide cylinder 9 is fixedly disposed on the partition 7 at one end of the sound pickup holes 8, a vibrating diaphragm 10 is disposed below the guide cylinder 9 and inside the cavity 2, vibration diaphragm 10 and vibration collector 11 electric connection, vibration collector 11's output and four speaker 12 electric connection, four speaker 12 locate on four lateral walls of base 1, all fixedly on the inner wall of communicating pipe 3 and cavity 2 be equipped with first abatvoix 13, the fixed second abatvoix that is equipped with in inboard bottom of cavity 2.

In fig. 2 and 3: threaded connection device is including the fixed screw ring 14 of locating the 4 tip of protection network, the below of screw ring 14 and the tip that is located communicating pipe 3 seted up with screw ring 14 assorted screw hole 15, slot 16 has been seted up to the medial extremity of screw ring 14, the inside of slot 16 is located to the tip of support otter board 6, increase the convenience of installation dismantlement between protection network 4 and the communicating pipe 3, can realize absorbing water sponge 5 and change between protection network 4 and the support otter board 6 simultaneously.

In fig. 2 and 3: the inside bottom of screw hole 15 is fixed and is equipped with sealing washer 17, and one side of sealing washer 17 contacts with threaded ring 14, increases the leakproofness of being connected between screw hole 15 and the threaded ring 14.

In FIG. 2: the lateral wall of base 1 has been seted up and has been placed chamber 18, and speaker 12 locates the inside of placing chamber 18, makes things convenient for speaker 12 to place, reduces occupying in space.

In fig. 1 and 2: one side of placing chamber 18 is equipped with dust screen 19, and dust screen 19's tip and base 1 fixed connection increase dirt-proof effect.

In fig. 1 and 2: the fixed bracing piece that is four that is equipped with quantity in one side that communicating pipe 3 was kept away from to base 1, the other end of bracing piece is fixed and is equipped with shockproof callus on the sole 20, increases base 1 and places the stability of placing between the mesa, avoids placing rocking of in-process.

The utility model discloses a theory of operation is: when the speaker is used specifically, the voice of a person speaking is transmitted into the communicating pipe through the communicating pipe 3 and transmitted into the cavity 2 through the sound collecting hole 8 on the partition plate 7, the voice is guided by the guide cylinder 9 when passing through the sound collecting hole 8, the sound is prevented from diffusing to the periphery in the process of being transmitted, the echo caused by collision between the voice and the inner wall of the base 1 is reduced, meanwhile, the first sound absorbing plate 13 is fixedly arranged on the inner wall of the cavity 2 and can absorb the sound collided on the inner wall of the cavity 2, the production of the echo is effectively reduced, the sound is transmitted to the vibrating diaphragm 10, then the sound is collected by the vibration collector 11 and is then played through the loudspeaker 12 on the side edge of the base 1, the flying foam generated in the process of speaking of the person is sprayed onto the protective net 4 and then is absorbed by the water absorbing sponge 5 on one side of the protective net 4, the droplet is prevented from dropping on the vibrating diaphragm 10 to cause damage, and meanwhile, the droplet is prevented from influencing the vibration sound of the vibrating diaphragm 10, so that the effects of suppressing noise and eliminating echo can be realized, and the definition of the conference microphone in use can be effectively improved.

The above-mentioned, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (6)

1. A conference microphone with noise suppression and echo elimination functions comprises a base (1) and is characterized in that a cavity (2) is arranged inside the base (1), a communicating pipe (3) is fixedly arranged in the middle of one side above the base (1), the communicating pipe (3) is communicated with the cavity (2), a protective net (4) is arranged at one end, away from the base (1), of the communicating pipe (3), a water absorption sponge (5) is arranged on one side of the protective net (4), through holes are formed in the water absorption sponge (5) at equal intervals, a supporting screen plate (6) is arranged on one side, away from the protective net (4), of the water absorption sponge (5), the supporting screen plate (6) and the protective net (4) are connected with the communicating pipe (3) through threaded connection devices, a partition plate (7) is fixedly arranged below the supporting screen plate (6) and located inside the communicating pipe (3), pick up sound hole (8) have been seted up to equidistance on baffle (7), the one end of picking up sound hole (8) just is located fixed guide cylinder (9) that is equipped with on baffle (7), the below of guide cylinder (9) just is located the inside of cavity (2) is equipped with vibration diaphragm (10), vibration diaphragm (10) and vibration collector (11) electric connection, the output and four speaker (12) electric connection of vibration collector (11), four speaker (12) are located on four lateral walls of base (1), communicating pipe (3) with all fixed first abatvoix (13) that are equipped with on the inner wall of cavity (2), the inboard bottom of cavity (2) is fixed and is equipped with the second abatvoix.

2. The conference microphone with the functions of suppressing noise and eliminating echo according to claim 1, wherein the threaded connection device comprises a threaded ring (14) fixedly arranged at an end portion of the protection net (4), a threaded hole (15) matched with the threaded ring (14) is formed in an end portion of the communication pipe (3) and below the threaded ring (14), a slot (16) is formed in an inner side end portion of the threaded ring (14), and an end portion of the support screen (6) is arranged inside the slot (16).

3. The conference microphone with the functions of suppressing noise and eliminating echo according to claim 2, wherein a sealing ring (17) is fixedly arranged at the inner bottom end of the threaded hole (15), and one side of the sealing ring (17) is in contact with the threaded ring (14).

4. The conference microphone with the functions of suppressing noise and eliminating echo according to claim 1, wherein the side wall of the base (1) is provided with a placing cavity (18), and the speaker (12) is arranged inside the placing cavity (18).

5. The conference microphone with the functions of suppressing noise and eliminating echo as claimed in claim 4, wherein a dust screen (19) is disposed at one side of the placing cavity (18), and an end of the dust screen (19) is fixedly connected with the base (1).

6. The conference microphone with the functions of suppressing noise and eliminating echo as claimed in claim 1, wherein four support rods are fixedly arranged on one side of the base (1) away from the communication pipe (3), and a shockproof foot pad (20) is fixedly arranged on the other end of each support rod.

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