Multi-directional microphone with self-adaptive beams

Abstract

The utility model discloses a self-adaptive wave beam multi-directional microphone, which comprises a base, a processor arranged in the base, an output interface arranged on the side surface of the base, a noise reduction microphone arranged on the base, a sound transmission mechanism arranged on one side of the noise reduction microphone, a driving mechanism arranged on the side surface of the sound transmission mechanism, and an acoustic sensor arranged on the sound transmission mechanism, an adjusting knob and an indicating lamp are arranged on the other side of the noise reduction microphone; the utility model has the advantages that the direction of the microphone is adjusted according to the sound position to collect the sound in different directions, and the collected sound is ensured to be clear.

Description

Technical Field

[0001] The utility model belongs to the technical field of microphone manufacturing, and particularly relates to a multi-directional microphone with adaptive beamforming. Background Art

[0002] A microphone, also known as a microphone or a transmitter, is a device that converts sound signals into electrical signals or mechanical vibrations. Its working principle is mainly based on underlying physical principles and technical implementations, such as the piezoelectric effect and the magnetoelectric effect. Microphones are widely used in multiple fields such as communication, medical, security, and the automotive industry.

[0003] When a common microphone collects sound, the microphone usually adopts a fixed placement method. In practical applications, it can often only clearly collect the sound in one direction, and the sound collection quality of sounds in other directions will be greatly affected, resulting in blurred and distorted sounds and making it difficult to restore the original sound quality. This limitation makes it difficult for microphones to meet the high requirements for sound collection in certain application scenarios. Content of the Utility Model

[0004] The purpose of the utility model is to provide a multi-directional microphone with adaptive beamforming to solve the problems that a common microphone can only clearly collect the sound in one direction.

[0005] The utility model realizes the above purpose through the following technical solutions: including a base, a processor is arranged inside the base, an output interface is arranged on the side of the base, a noise reduction microphone is arranged on the base, a sound transmission mechanism is arranged on one side of the noise reduction microphone, a driving mechanism is arranged on the side of the sound transmission mechanism, an acoustic sensor is arranged on the sound transmission mechanism, and an adjustment knob and an indicator light are arranged on the other side of the noise reduction microphone.

[0006] Further, the driving mechanism includes a mounting block, the mounting block is connected to the base by screws, a micro motor and a micro reducer are arranged inside the mounting block, both the micro motor and the micro reducer are connected to the mounting block by screws, the output end of the micro motor is connected to the input end of the micro reducer, a first gear is arranged at the output end of the micro reducer and is connected by a buckle, a first gear cover is arranged outside the first gear, and the first gear cover is connected to the mounting block by screws.

[0007] Further, the sound transmission mechanism includes a transmission connecting rod, one end of the transmission connecting rod is inserted into the base and then electrically connected, a rotating block is arranged outside the transmission connecting rod, a second gear is fixedly arranged at the bottom of the rotating block, both the rotating block and the second gear are rotatably connected to the transmission connecting rod, the second gear meshes with the first gear, a second gear cover is arranged outside the second gear, and the second gear cover is connected to the transmission connecting rod by screws.

[0008] Furthermore, a connecting block is installed on the top of the rotating block. The acoustic sensor is located above the connecting block and is connected by screws. The acoustic sensor is electrically connected to the transmission connecting rod. An annular microphone is arranged outside the acoustic sensor. The annular microphone is connected to the rotating block by screws, and the annular microphone is electrically connected to the transmission connecting rod.

[0009] Furthermore, a plurality of sound collection holes are arranged on the side of the acoustic sensor. The sound collection holes receive sound signals and convert them into electrical signals.

[0010] Beneficial effects: The design of the present utility model is reasonable and has the following beneficial effects:

[0011] 1. In the solution of the present utility model, the acoustic sensor receives sound signals through the sound collection holes and converts them into electrical signals, and then determines the sound direction through the processor, which is convenient for adjusting the direction of the sound transmission mechanism according to the sound position to collect sounds in different directions and ensure the clarity of the collected sounds.

[0012] 2. In the solution of the present utility model, the micro motor and the micro reducer drive the first gear to rotate precisely, drive the second gear to rotate, and drive the rotating block and the annular microphone to rotate together towards the sound source. By adjusting the direction and shortening the distance, it is convenient to collect clearer sounds. Description of the drawings

[0013] Figure 1 is a schematic structural diagram of the present utility model;

[0014] Figure 2 is a schematic partial structural diagram of the present utility model;

[0015] Figure 3 is a schematic structural diagram of the output interface of the present utility model.

[0016] In the figure: 1 - base, 2 - output interface, 3 - noise reduction microphone, 4 - sound transmission mechanism, 5 - drive mechanism, 6 - acoustic sensor, 7 - adjustment knob, 8 - indicator light;

[0017] 41 - transmission connecting rod, 42 - rotating block, 43 - second gear, 44 - second gear cover, 45 - connecting block, 46 - annular microphone, 51 - mounting block, 52 - micro motor, 53 - micro reducer, 54 - first gear, 55 - first gear cover, 61 - sound collection hole. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0019] Combined with Figures 1 to 3 An adaptive beam multi-directional microphone shown in the figure includes a base 1. A processor is provided inside the base 1. An output interface 2 is provided on the side of the base 1. A noise reduction microphone 3 is provided on the base 1. A sound transmission mechanism 4 is provided on one side of the noise reduction microphone 3. A driving mechanism 5 is provided on the side of the sound transmission mechanism 4. An acoustic sensor 6 is provided on the sound transmission mechanism 4. An adjustment knob 7 and an indicator light 8 are provided on the other side of the noise reduction microphone 3.

[0020] Among them, the driving mechanism 5 includes a mounting block 51. The mounting block 51 is connected to the base 1 by screws. A micro motor 52 and a micro reducer 53 are provided inside the mounting block 51. Both the micro motor 52 and the micro reducer 53 are connected to the mounting block 51 by screws. The output end of the micro motor 52 is connected to the input end of the micro reducer 53. A first gear 54 is provided at the output end of the micro reducer 53 and is connected by a buckle. A first gear cover 55 is provided outside the first gear 54. The first gear cover 55 is connected to the mounting block 51 by screws, facilitating the precise rotation of the first gear 54 driven by the micro motor 52 and the micro reducer 53;

[0021] The sound transmission mechanism 4 includes a transmission link 41. One end of the transmission link 41 is inserted into the base 1 and then electrically connected. A rotating block 42 is provided outside the transmission link 41. A second gear 43 is fixedly provided at the bottom of the rotating block 42. Both the rotating block 42 and the second gear 43 are rotationally connected to the transmission link 41. The second gear 43 meshes with the first gear 54. A second gear cover 44 is provided outside the second gear 43. The second gear cover 44 is connected to the transmission link 41 by screws. The first gear 54 drives the second gear 43 to rotate;

[0022] A connecting block 45 is installed at the top of the rotating block 42. The acoustic sensor 6 is located above the connecting block 45 and is connected by screws. The acoustic sensor 6 is electrically connected to the transmission link 41. An annular microphone 46 is provided outside the acoustic sensor 6. The annular microphone 46 is connected to the rotating block 42 by screws. The annular microphone 46 is electrically connected to the transmission link 41. The acoustic sensor 6 receives the sound direction. After the second gear 43 rotates, it drives the annular microphone 46 to rotate towards the sound source together;

[0023] A plurality of sound collection holes 61 are provided on the side of the acoustic sensor 6. The sound collection holes 61 receive the sound signal and convert it into an electrical signal.

[0024] Working principle: When the present utility model is in use, the acoustic sensor 6 receives a sound signal through the sound collection hole 61 and converts it into an electrical signal. Then, the processor determines the sound direction. The micro-motor 52 and the micro-reducer 53 drive the first gear 54 to rotate precisely, drive the second gear 43 to rotate, and drive the rotating block 42 and the annular microphone 46 to rotate together towards the sound source, enabling clearer sound collection.

[0025] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any perspective, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

[0026] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An adaptive beam multi-directional microphone, comprising a base (1), a processor is provided inside the base (1), and an output interface (2) is provided on the side of the base (1), characterized in that: The base (1) is provided with a noise reduction microphone (3), one side of the noise reduction microphone (3) is provided with a sound transmission mechanism (4), the side of the sound transmission mechanism (4) is provided with a driving mechanism (5), the sound transmission mechanism (4) is provided with an acoustic sensor (6), and the other side of the noise reduction microphone (3) is provided with an adjustment knob (7) and an indicator light (8).

2. The adaptive beam multi-directional microphone according to claim 1, characterized in that: The driving mechanism (5) comprises a mounting block (51), wherein the mounting block (51) is connected to the base (1) by means of screws, a micro motor (52) and a micro reducer (53) are arranged on the inner side of the mounting block (51), the micro motor (52) and the micro reducer (53) are both connected to the mounting block (51) by means of screws, the output end of the micro motor (52) is connected to the input end of the micro reducer (53), the output end of the micro reducer (53) is provided with a first gear (54) and is connected by means of a buckle, a first gear cover (55) is arranged on the outer side of the first gear (54), and the first gear cover (55) is connected to the mounting block (51) by means of screws.

3. The adaptive beam multi-directional microphone according to claim 2, characterized in that: The sound transmission mechanism (4) comprises a transmission connecting rod (41), one end of which is inserted into the base (1) and electrically connected thereto; a rotating block (42) is provided on the outside of the transmission connecting rod (41); a second gear (43) is fixedly provided on the bottom of the rotating block (42); the rotating block (42) and the second gear (43) are both rotatably connected to the transmission connecting rod (41); the second gear (43) is meshed with the first gear (54); a second gear cover (44) is provided on the outside of the second gear (43); and the second gear cover (44) is connected to the transmission connecting rod (41) by screws.

4. The adaptive beam multi-directional microphone according to claim 3, characterized in that: A connecting block (45) is installed on the top of the rotating block (42); the acoustic sensor (6) is located above the connecting block (45) and is connected by screws; the acoustic sensor (6) is electrically connected to the transmission connecting rod (41); an annular microphone (46) is arranged on the outside of the acoustic sensor (6); the annular microphone (46) is connected to the rotating block (42) by screws; and the annular microphone (46) is electrically connected to the transmission connecting rod (41).

5. The multi-directional microphone with adaptive beamforming according to claim 4, characterized in that: A plurality of sound collecting holes (61) are provided on the side of the acoustic sensor (6), and the sound collecting holes (61) receive sound signals and convert them into electrical signals.

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