Microphone

Abstract

The utility model discloses a microphone, which belongs to the field of microphones and comprises a microphone and a driving mechanism. The driving mechanism comprises a connecting plate, a bolt which penetrates through the center of the connecting plate and is in threaded connection with the back face of the microphone, three electric telescopic rods which are arranged on the side, away from the microphone, of the connecting plate and distributed in an annular array mode, and a mounting base which is arranged at the ends, away from the connecting plate, of the electric telescopic rods. The two ends of the electric telescopic rod are rotationally connected with the connecting plate and the mounting seat through ball seats correspondingly. The microphone can provide clear and pure audio output by adopting a plurality of sound pickups, an advanced audio processing technology and a driving mechanism, ensures that a user obtains high-quality voice communication experience in occasions such as conferences and speeches, and can position and track a sound source according to the sound source, so that the whole-course sound receiving effect in each occasion is ensured.

Description

Technical Field

[0001] The utility model relates to the field of microphones, in particular to a microphone. Background Art

[0002] A microphone, also known as a mic or microphone, is a transducer that converts sound into electronic signals. Its main function is to capture sound and convert it into electrical signals, which can then be used or recorded by electronic devices such as audio processors, speakers, etc.

[0003] A Chinese utility model patent with publication number CN217216843U discloses an overhead microphone system, in which a microphone module can perform three-axis motion of longitudinal, lateral and elevation at the bottom of the indoor ceiling, and cooperates with sound sensors and position sensors distributed on the ceiling. When speakers at different spatial positions in a large-scale long table or round table meeting scene need amplification services, the microphone can automatically move to the top of the corresponding position, without the need for manual provision of a microphone or passing a microphone for use in turns, thereby saving meeting costs and manpower, and improving the experience and smoothness of the meeting. However, since the microphone system uses a three-axis motion system to adjust the microphone to the sound source position, it requires a certain amount of moving time, and when a speaker is replaced during a speech, the human voice cannot be captured in the first time, resulting in unsatisfactory initial sound reception when the speaker is replaced at a long distance.

[0004] Therefore, a microphone is provided to solve the above problems. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] The utility model provides a microphone, aiming to solve the problem that the existing ceiling microphone system proposed in the background technology is prone to poor initial sound reception when the sound source is replaced at a long distance.

[0007] (II) Technical solution

[0008] In order to achieve the above-mentioned purpose, the utility model provides the following technical solution: a microphone, including a microphone and a driving mechanism.

[0009] In order to locate the sound source and adjust the direction of the microphone, the driving mechanism includes a connecting plate, a bolt passing through the center of the connecting plate and screwed to the back of the microphone, three electric telescopic rods distributed in a circular array on the side of the connecting plate away from the microphone, and a mounting seat arranged at the end of the electric telescopic rod away from the connecting plate, wherein the two ends of the electric telescopic rod are rotatably connected to the connecting plate and the mounting seat through ball seats.

[0010] A sound collection system for tracking the sound source and sending a driving instruction to the electric telescopic rod is provided inside the microphone. The sound collection system includes a circuit board, on which a processing chip, six pickups distributed in a circular array, a USB for power supply or connection to a sound card, an audio input connector for receiving external audio, an audio output connector for connecting to an external speaker or other devices, and a radio frequency remote control receiver for receiving remote control signals are installed. Through the sound collection system inside the microphone, the six pickups distributed in a circular array are responsible for capturing surrounding sound signals. These sound signals are then transmitted to the processing chip for analysis. The processing chip can quickly determine the specific position and direction of the sound source through advanced algorithms. Once the sound source is accurately located, the processing chip will immediately generate a corresponding driving instruction and send it to the electric telescopic rod in the driving mechanism. Since both ends of the electric telescopic rod are rotatably connected to the connecting plate and the mounting seat through ball seats, they can extend and rotate according to the received instruction, thereby adjusting the orientation of the microphone to make it more accurately point to the sound source position. In this way, the microphone can track the sound source in real time and automatically adjust its orientation as needed to ensure that the clearest and most accurate sound signals can be captured at any time.

[0011] Preferably, for the normal operation of the sound collection system, the output ends of the pickups, the USB, the audio input connector, and the radio frequency remote control receiver are all connected to the input end of the processing chip, and the input end of the audio output connector and the input end of the electric telescopic rod are both connected to the output end of the processing chip. Through the built-in sound collection system, the pickups, the USB, the audio input connector, and the radio frequency remote control receiver in the sound collection system are all connected to the input end of the processing chip, forming a comprehensive and flexible information input network. The sound signals captured by the pickups, the data of power supply or connection to the sound card transmitted by the USB, the external audio signals received by the audio input connector, and the remote control instructions received by the radio frequency remote control receiver all undergo high-speed processing and analysis by the processing chip. The processing chip quickly determines the sound source position based on this information and generates corresponding control instructions as needed. Then, these instructions are sent to the electric telescopic rod through the output end of the processing chip. The audio output connector transmits the processed audio signals to an external speaker or other devices, while the electric telescopic rod adjusts the orientation of the microphone according to the instructions to ensure that the microphone always points to the sound source position and achieves the best capture of sound.

[0012] Preferably, in order to process the collected sound source position information and generate control commands for the electric telescopic rod, a sound source localization algorithm for calculating the direction of the sound source by comparing the time differences of the sound sources received by the six pickups is set in the processing chip, and a regulation algorithm for determining the orientation of the microphone based on the telescopic lengths of the three electric telescopic rods is set in the processing chip. As the core of the microphone, the processing chip integrates a variety of advanced algorithms. Among them, the sound source localization algorithm accurately calculates the direction of the sound source by comparing the time differences of the sound sources received by the six pickups arranged in a circular array. Since there are slight differences in the arrival times of the sound at the pickups in different positions, the processing chip can utilize these differences and, through complex calculations and analyses, accurately determine the specific position of the sound source. At the same time, a regulation algorithm is also set in the processing chip. Based on the results of the sound source localization, this algorithm determines the orientation of the microphone by controlling the telescopic lengths of the three electric telescopic rods. The two ends of the electric telescopic rod are rotationally connected to the connecting plate and the mounting seat through ball seats, enabling flexible angle adjustment. The regulation algorithm calculates the telescopic lengths required for each electric telescopic rod based on the position information of the sound source and sends control commands to the electric telescopic rod through the output end, causing it to expand and contract according to the commands, thereby adjusting the orientation of the microphone to always point to the sound source position.

[0013] Preferably, in order to enable the microphone to support more functions, a communication protocol for power on / off, volume adjustment, PPT page turning, full screen, and full screen exit functions is set in the RF remote control receiver. By incorporating the communication protocol for power on / off, volume adjustment, PPT page turning, full screen, and full screen exit functions, users can send specific commands to the microphone through the remote control. When the user presses the corresponding button on the remote control, the RF remote control receiver will receive the corresponding signal and convert it into a command that the processing chip can recognize. After receiving these commands, the processing chip will execute corresponding operations according to its built-in logic program, such as turning the microphone on or off, adjusting the volume, controlling the page turning of the PPT, entering or exiting the full screen mode.

[0014] Preferably, in order to enable the microphone to pick up sound clearly in various environments, the pickup supports automatic gain control (AGC), automatic noise cancellation (ANC), automatic feedback cancellation (AFC), and beamforming technology. Automatic gain control (AGC) can automatically adjust the gain level of the pickup to ensure stable audio output at various volumes. Automatic noise cancellation (ANC) technology enhances the clarity of speech by identifying and eliminating background noise. Automatic feedback cancellation (AFC) technology is used to eliminate the howling sound caused by sound feedback. Beamforming technology controls the directivity of the pickup so that it can more accurately receive sound from a specific direction.

[0015] Preferably, for the convenience of microphone disassembly for maintenance, the microphone includes a sound collection cover and a base mounted on the back of the sound collection cover. One side of the sound collection cover close to the base has six first nut posts distributed in an annular array. One side of the base close to the sound collection cover has sleeves inserted with the first nut posts, and a first screw passing through the sleeve is screwed on the first nut post. By the six first nut posts on the back of the sound collection cover being distributed in an annular array and inserted into the corresponding sleeves on the base, and then the first screw passing through the sleeve and being screwed with the first nut post for fixation, it is convenient to disassemble the sound collection cover and the base of the microphone.

[0016] Preferably, for the convenience of maintenance and replacement of the circuit board, one side of the sound collection cover close to the base has four second nut posts distributed in an annular array, and second screws passing through the circuit board are screwed on the second nut posts. When maintenance or replacement of the circuit board is needed, the user can easily disassemble or install the circuit board by simply rotating the second screws, without disassembling the whole microphone, thus greatly simplifying the maintenance process and improving work efficiency.

[0017] Preferably, for the convenience of maintenance and replacement of the pickup, one side of the sound collection cover close to the circuit board has six card slots distributed in an annular array, and the pickup is snap-fitted in the card slots. By arranging six card slots distributed in an annular array on one side of the sound collection cover close to the circuit board, the pickup can be directly snap-fitted in these card slots. This design makes the installation and disassembly of the pickup very simple, without the need to use additional screws or tools. When maintenance or replacement of the pickup is needed, the user only needs to gently take out or put in the pickup from the card slot to complete the operation.

[0018] Preferably, for exposing the USB, audio input connector and audio output connector, relief holes are provided at the positions on the base corresponding to the USB, audio input connector and audio output connector. The function of these relief holes is to allow these interfaces to be exposed from the base, facilitating the user to directly connect external devices such as USB cables, audio input cables and audio output cables.

[0019] (III) Beneficial effects

[0020] For this microphone, by adopting multiple pickups, advanced audio processing technology and a driving mechanism, the microphone can provide clear and pure audio output, ensuring that users can obtain a high-quality voice communication experience in meetings, speeches and other occasions, and can locate the sound source and then track the sound source, thus ensuring the whole-course sound collection effect in various occasions.

[0021] This microphone is equipped with a radio frequency remote control receiver that supports users to remotely control the microphone through a remote control, realizing functions such as power on / off, volume adjustment, and PPT page turning, providing users with a more flexible and convenient operation method.

[0022] The microphone, the circuit board and the pickup are all connected by a detachable structure, so it is convenient to disassemble, facilitating subsequent maintenance and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic structural diagram of a microphone Figure 1 ;

[0024] Figure 2 It is a schematic structural diagram of a microphone Figure 2 ;

[0025] Figure 3 It is an exploded schematic structural diagram of a microphone;

[0026] Figure 4 It is a schematic structural diagram of the base in a microphone;

[0027] Figure 5 It is a schematic flow diagram of the sound collection system in a microphone.

[0028] In the figure:

[0029] 1. Microphone;

[0030] 11. Sound collection cover; 111. First nut post; 112. Second nut post; 1121. Second screw; 113. Card slot;

[0031] 12. Base; 121. Sleeve; 1211. First screw; 122. Relief hole;

[0032] 13. Sound collection system; 131. Circuit board; 132. Processing chip; 133. Pickup;

[0033] 134. USB; 135. Audio input connector; 136. Audio output connector; 137. RF remote control receiver;

[0034] 2. Driving mechanism; 21. Connecting plate; 22. Bolt; 23. Electric telescopic rod; 231. Ball seat; 24. Mounting seat. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] Please refer to Figures 1-5, the present utility model provides a technical solution: a microphone, comprising a microphone 1 and a driving mechanism 2.

[0037] The driving mechanism 2 includes a connecting plate 21, a bolt 22 passing through the center of the connecting plate 21 and screwed to the back of the microphone 1, three electric telescopic rods 23 arranged in an annular array on the side of the connecting plate 21 away from the microphone 1, and a mounting seat 24 arranged at one end of the electric telescopic rod 23 away from the connecting plate 21. Among them, both ends of the electric telescopic rod 23 are rotatably connected to the connecting plate 21 and the mounting seat 24 through ball seats 231.

[0038] A sound receiving system 13 for tracking the sound source and sending driving instructions to the electric telescopic rods 23 is provided in the microphone 1. The sound receiving system 13 includes a circuit board 131, on which a processing chip 132, six pickups 133 arranged in an annular array, a USB 134 for power supply or connecting to a sound card, an audio input connector 135 for receiving external audio, an audio output connector 136 for connecting to an external speaker or other devices, and a radio frequency remote control receiver 137 for receiving remote control signals are installed.

[0039] During use, through the sound receiving system 13 in the microphone 1, the six pickups 133 arranged in an annular array are responsible for capturing the surrounding sound signals. These sound signals are then transmitted to the processing chip 132 for analysis. The processing chip 132 can quickly determine the specific position and direction of the sound source through advanced algorithms. Once the sound source is accurately located, the processing chip 132 will immediately generate corresponding driving instructions and send them to the electric telescopic rods 23 in the driving mechanism 2. Since both ends of the electric telescopic rod 23 are rotatably connected to the connecting plate 21 and the mounting seat 24 through ball seats 231, they can extend, contract and rotate according to the received instructions, so as to adjust the orientation of the microphone 1 and make it more accurately point to the sound source position. In this way, the microphone can track the sound source in real time and automatically adjust its orientation according to needs, ensuring that the clearest and most accurate sound signals can be captured at any time.

[0040] Specifically, the output terminals of the pickup 133, the USB 134, the audio input connector 135, and the RF remote control receiver 137 are all connected to the input terminal of the processing chip 132, and the input terminal of the audio output connector 136 and the input terminal of the electric telescopic rod 23 are both connected to the output terminal of the processing chip 132; through the built-in sound collection system 13, the pickup 133, the USB 134, the audio input connector 135, and the RF remote control receiver 137 in the sound collection system are all connected to the input terminal of the processing chip 132, forming a comprehensive and flexible information input network. The sound signals captured by the pickup 133, the power supply or data connected to the sound card transmitted by the USB 134, the external audio signals received by the audio input connector 135, and the remote control instructions received by the RF remote control receiver 137 are all processed and analyzed at high speed by the processing chip 132. Based on this information, the processing chip 132 quickly determines the sound source position through advanced algorithms and generates corresponding control instructions as needed. Then, these instructions are sent to the electric telescopic rod 23 through the output terminal of the processing chip 132. The audio output connector 136 transmits the processed audio signals to an external speaker or other devices, while the electric telescopic rod 23 adjusts the orientation of the microphone 1 according to the instructions to ensure that the microphone always points to the sound source position and achieves the best sound capture.

[0041] Among them, a sound source localization algorithm for calculating the sound source direction by comparing the time differences of the sound sources received by six pickups 133 is set in the processing chip 132, and a regulation algorithm for determining the orientation of the microphone 1 according to the telescopic lengths of three electric telescopic rods 23 is set in the processing chip 132; as the core of the microphone, the processing chip 132 integrates a variety of advanced algorithms. Among them, the sound source localization algorithm accurately calculates the direction of the sound source by comparing the time differences of the sound sources received by six pickups 133 distributed in a circular array. Since there are slight differences in the arrival times of the sound at the pickups in different positions, the processing chip 132 can utilize these differences and accurately determine the specific position of the sound source through complex calculations and analyses. At the same time, a regulation algorithm is also set in the processing chip 132. This algorithm determines the orientation of the microphone 1 by controlling the telescopic lengths of three electric telescopic rods 23 according to the results of the sound source localization. The two ends of the electric telescopic rod 23 are rotatably connected to the connecting plate 21 and the mounting seat 24 through ball seats 231 and can flexibly adjust the angle. The regulation algorithm calculates the telescopic lengths required for each electric telescopic rod 23 according to the position information of the sound source and sends control instructions to the electric telescopic rod 23 through the output terminal, so that it expands and contracts according to the instructions, thereby adjusting the orientation of the microphone 1 to always point to the sound source position.

[0042] In addition, a communication protocol for power on / off, volume adjustment, PPT page turning, full screen, and full screen exit functions is set in the RF remote control receiver 137; through the built-in communication protocol for power on / off, volume adjustment, PPT page turning, full screen, and full screen exit functions, when the user presses the corresponding button on the remote control, the RF remote control receiver 137 will receive the corresponding signal and convert it into an instruction recognizable by the processing chip 132. After receiving these instructions, the processing chip 132 will execute corresponding operations according to its built-in logic program, such as turning on or off the microphone, adjusting the volume, controlling the page turning of the PPT, and entering or exiting the full screen mode.

[0043] Furthermore, the pickup 133 supports automatic gain control (AGC), automatic noise cancellation (ANC), automatic feedback cancellation (AFC), and beamforming technology; during sound collection, the automatic gain control (AGC) can automatically adjust the gain level of the pickup to ensure stable audio output at various volumes. The automatic noise cancellation (ANC) technology can enhance the clarity of speech by identifying and eliminating background noise. The automatic feedback cancellation (AFC) technology is used to eliminate the howling sound caused by sound feedback, and the beamforming technology can control the directivity of the pickup to enable it to more accurately receive sounds from a specific direction.

[0044] It should be noted that the microphone 1 includes a sound collection cover 11 and a base 12 installed on the back of the sound collection cover 11. The side of the sound collection cover 11 close to the base 12 has six first nut posts 111 distributed in a circular array. The side of the base 12 close to the sound collection cover 11 has sleeves 121 inserted with the first nut posts 111, and a first screw 1211 passing through the sleeve 121 is screwed onto the first nut post 111; due to the six first nut posts 111 on the back of the sound collection cover 11 being distributed in a circular array and inserted with the corresponding sleeves 121 on the base 12, and then fixed by screwing the first screw 1211 through the sleeve 121 and the first nut post 111, it is convenient to disassemble the sound collection cover 11 and the base 12 of the microphone 1.

[0045] Among them, the side of the sound collection cover 11 close to the base 12 has four second nut posts 112 distributed in a circular array, and second screws 1121 passing through the circuit board 131 are screwed onto the second nut posts 112; when maintenance or replacement of the circuit board is required, the circuit board 131 can be easily disassembled or installed by rotating the second screws 1121 without disassembling the entire microphone, thus greatly simplifying the maintenance process and improving work efficiency.

[0046] Further, one side of the sound collecting cover 11 close to the circuit board 131 has six card slots 113 distributed in an annular array, and the pickup 133 is snap-fitted in the card slots 113; by arranging six card slots 113 distributed in an annular array on the side of the sound collecting cover 11 close to the circuit board 131, the pickup 133 can be directly snap-fitted in these card slots 113, so that the installation and disassembly of the pickup 133 become very simple, without the need to use additional screws or tools. When maintenance or replacement of the pickup is required, the user only needs to gently take out or put the pickup from the card slot to complete the operation.

[0047] Furthermore, relief holes 122 are provided at positions on the base 12 corresponding to the USB 134, the audio input connector 135, and the audio output connector 136; through the relief holes 122, these interfaces are allowed to protrude from the base 12, thus facilitating the user to directly connect external devices, such as USB cables, audio input cables, and audio output cables.

[0048] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and the inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A microphone, comprising a microphone (1) and a driving mechanism (2), characterized in that: The driving mechanism (2) comprises a connecting plate (21), a bolt (22) passing through the center of the connecting plate (21) and screwed to the back of the microphone (1), three electric telescopic rods (23) arranged in a ring array on a side of the connecting plate (21) away from the microphone (1), and a mounting seat (24) arranged at one end of the electric telescopic rod (23) away from the connecting plate (21), wherein the two ends of the electric telescopic rod (23) are rotatably connected to the connecting plate (21) and the mounting seat (24) respectively via a ball seat (231); The microphone (1) is provided with a sound receiving system (13) for tracking a sound source and sending a driving instruction to the electric telescopic rod (23). The sound receiving system (13) comprises a circuit board (131), on which is mounted a processing chip (132), six pickups (133) distributed in a ring array, a USB (134) for power supply or connection to a sound card, an audio input connector (135) for receiving external audio, an audio output connector (136) for connecting to an external speaker, and a radio frequency remote control receiver (137) for receiving remote control signals.

2. A microphone according to claim 1, characterized in that: The output end of the microphone (133), the output end of the USB (134), the output end of the audio input connector (135) and the output end of the radio frequency remote control receiver (137) are all connected to the input end of the processing chip (132), and the input end of the audio output connector (136) and the input end of the electric telescopic rod (23) are all connected to the output end of the processing chip (132).

3. A microphone according to claim 2, characterized in that: The microphone (1) comprises a sound receiving cover (11) and a base (12) mounted on the back of the sound receiving cover (11); a side of the sound receiving cover (11) close to the base (12) comprises six first nut columns (111) distributed in a circular array; a side of the base (12) close to the sound receiving cover (11) comprises a sleeve (121) plugged into the first nut column (111); a first screw (1211) passing through the sleeve (121) is threadedly connected to the first nut column (111).

4. A microphone according to claim 3, characterized in that: The side of the sound receiving cover (11) close to the base (12) has four second nut columns (112) distributed in a circular array, and the second nut columns (112) are all screwed with second screws (1121) passing through the circuit board (131).

5. A microphone according to claim 4, characterized in that: A side of the sound collecting cover (11) close to the circuit board (131) has six slots (113) distributed in a circular array, and the pickup (133) is snapped into the slots (113).

6. A microphone according to claim 5, characterized in that: The base (12) is provided with clearance holes (122) at positions corresponding to the USB (134), the audio input connector (135) and the audio output connector (136).

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