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CN-224205202-U - Microphone device of annular array arrangement

CN224205202UCN 224205202 UCN224205202 UCN 224205202UCN-224205202-U

Abstract

The utility model discloses a microphone device arranged in an annular array, which adopts the arrangement of a first microphone sensor arranged in the annular array and a second microphone sensor arranged with a certain height difference from the first microphone sensor, utilizes the time difference, the phase difference and other information of sound received by different microphones to realize sound source positioning, combines a software algorithm to remove noise, does not need to wear a traditional head-mounted microphone or a handheld microphone, can easily speak with lighter and natural sound at any position, and can hear clear speech sound by a participant or an online recording system, thereby solving the problems that the traditional microphone needs to wear equipment by the speaker or has certain distance limitation or can reach the effect of sound propagation only by a large voice roar.

Inventors

  • LIAO CHENGDONG

Assignees

  • 深圳科润视讯技术有限公司

Dates

Publication Date
20260505
Application Date
20250425

Claims (10)

  1. 1. The utility model provides a microphone device of annular array arrangement, its characterized in that includes mount (1), mainboard portion (2) and microphone portion (4), mount (1) with microphone portion (4) pass through hollow connecting rod (3) fixed connection, microphone portion (4) include screen panel portion (41) and support portion (42), support portion (42) include upper bracket (421) and lower support (422), lower support (422) have annular array arrangement's first sensor cavity (423) and with the minimum department of sphere that is the equator in first sensor cavity (423) place is provided with second sensor cavity (424), microphone portion (4) include microphone sensor (44), microphone sensor (44) are through one and the same microphone soft board (45) connect after fixed independent place in first sensor cavity (423) and second sensor cavity (424), microphone soft board (45) are from the annular array arrangement's of first sensor (423) is provided with second sensor cavity (44) in the one of them microphone cavity (423) of the form of connection in series connection of first sensor cavity (44), and then the microphone sensor (44) arranged in the second sensor cavity (424) is downwards extended to pass through the hollow part of the connecting rod (3) to be connected with the main board part (2), the main board part (2) comprises an analog-to-digital conversion chip, and after analog signals are converted into digital signals, sound sources in different positions and different directions in a scene are calculated through a software algorithm.
  2. 2. The microphone device of claim 1, wherein the first sensor cavities (423) of the annular array are five cavities, and the first sensor cavities (423) are spaced apart by equal distances.
  3. 3. The microphone device of claim 1, wherein the mesh enclosure portion (41) is a spherical surface with uniformly distributed through holes, the mesh enclosure portion (41) comprises an upper mesh enclosure (411) and a lower mesh enclosure (412), the support portion (42) comprises an annular upper support (421) and a lower support (422) with an annular ring, the upper mesh enclosure (411) and the upper support (421) are fixedly connected through the cooperation of a first insert sheet (4111) and a first slot (4211), and the lower mesh enclosure (412) and the lower support (422) are fixedly connected through the cooperation of a second insert sheet (4121) and a second slot (4221).
  4. 4. A microphone device arranged in an annular array according to claim 3, wherein the upper bracket (421) has a first slot (4211), a first insert sheet (4111) corresponding to the first slot (4211) is provided on the upper screen (411), the first insert sheet (4111) is inserted into the first slot (4211) and bent to realize the fixed connection between the upper screen (411) and the upper bracket (421), the lower bracket (422) has a second slot (4221), a second insert sheet (4121) corresponding to the second slot (4221) is provided on the lower screen (412), and the second insert sheet (4121) is inserted into the second slot (4221) and bent to realize the fixed connection between the lower screen (412) and the lower bracket (422).
  5. 5. The microphone device of claim 1, wherein the upper bracket (421) and the lower bracket (422) are fastened and fixedly connected through a fastening slot structure, and a decorative ring (43) is arranged outside the connecting seam for shielding the appearance.
  6. 6. The microphone device arranged in the annular array according to claim 3, wherein a first screw hole (233) is formed in the middle of a main board lower shell (23) of the main board portion (2), the first screw hole (233) is fixedly connected with one end of the connecting rod (3), a second screw hole (4112) is formed in the center of the outer side of the upper net cover (411), and the second screw hole (4112) is fixedly connected with the other end of the connecting rod (3).
  7. 7. The microphone device of claim 1, wherein the main board portion (2) includes a main board upper case (21), a functional main board (22) and a main board lower case (23), the main board upper case (21) and the main board lower case (23) are fixedly connected through fastening screws, the main board lower case (23) has a cavity for placing the functional main board (22) and a cavity wall (231) surrounding the functional main board (22), and vertical second through holes (2311) are uniformly formed in the cavity wall (231).
  8. 8. The microphone device of claim 7, wherein the main board upper case (21) has third through holes (211) corresponding to components of the functional main board (22) one by one for the components to pass through the main board upper case (21), and the main board upper case (21) is provided with grooves (212) circumferentially with respect to the outside of the cavity.
  9. 9. The microphone device of claim 7, wherein a transparent ring (232) is disposed at an edge of the main board lower case (23), and the transparent ring (232) is fixedly connected with the main board lower case (23) through a fixing column (2321).
  10. 10. The microphone device of claim 1, wherein the fixing frame (1) is provided with buckles (122) around, grooves (212) corresponding to the buckles (122) one by one are arranged on the outer side of a main board upper shell (21) of the main board part (2), the grooves (212) are provided with inlets for inserting the buckles (122), and the buckles (122) are inserted from the inlets, rotate into the inside of the grooves (212) and are blocked and fixed by limiting parts of the grooves (212) to realize the fixed connection of the main board part (2) and the fixing frame (1).

Description

Microphone device of annular array arrangement Technical Field The utility model belongs to the field of microphone devices, and particularly relates to a microphone device with annular array arrangement. Background The conference room microphone has the use requirements under various scenes, is generally connected with conference terminal equipment through data wires with audio interface types such as USB, type-C and the like, has the advantages of no drive installation, plug and play, stable signal transmission, no battery continuous voyage trouble, high cost performance, strong equipment compatibility and the like, is limited by wires, has insufficient mobility and occupies desktop space, so that the desktop is messy, and the other wireless omnidirectional microphone is connected with the conference terminal equipment by adopting the technologies such as Bluetooth, 2.4G, 5.8G wireless adapters and the like, is internally provided with a large-capacity lithium battery, has long signal receiving distance, clear and no delay in human voice transmission, is not limited by wires, is flexible to move and portable, and can generate more or less invariance to a speaker, including wearing, limiting the using distance and the like. For a large conference room, there are a ceiling microphone and an array microphone at present, and the existing array microphone is generally composed of a plurality of microphone units and a complex signal processing circuit, so that the technology content is relatively high, the equipment price is relatively high, and meanwhile, the installation and debugging of the array microphone require specialized personnel, the labor cost is increased, for a desktop array microphone of a small conference room, the unit spacing can be about 5 cm to 10 cm, for a ceiling array microphone of a large conference room, the unit spacing can be about 15 cm to 30 cm, and the collaborative debugging is required between each unit, so that the use cost is high. Disclosure of utility model The utility model aims to provide a microphone device with annular array arrangement, which solves the technical problems of complex technology and high installation cost caused by the fact that a plurality of microphone units are required to be installed at fixed intervals and cooperatively debugged in the existing array microphone. In order to solve the technical problems, the utility model discloses a microphone device with annular array arrangement, which comprises a fixing frame, a main board part and a microphone part, wherein the fixing frame is fixedly connected with the microphone part through a hollow connecting rod, the microphone part comprises a net cover part and a support part, the support part comprises an upper support and a lower support, the lower support is provided with a first sensor cavity with annular array arrangement and a second sensor cavity arranged at the lowest point of a spherical surface with an annular equator where the first sensor cavity is arranged, the microphone part comprises a microphone sensor, the microphone sensor is independently arranged in the first sensor cavity and the second sensor cavity after being connected and fixed through the same microphone soft board, the microphone soft board is connected with the microphone sensors arranged in the other first sensor cavities in a serial mode from one microphone sensor of the annular array arrangement, then the microphone sensors extend downwards to the second sensor cavity to be arranged in the other first sensor cavity in a mode, and then the microphone soft board is connected with the second sensor cavity in a mode, and the microphone soft board is connected with the microphone soft board through the hollow connecting rod, and the microphone soft board is not connected with the main board. Preferably, the first sensor cavities arranged in an annular array are five cavities, and the interval distances between every two first sensor cavities are equal. Preferably, the mesh enclosure part is a spherical surface with uniformly distributed through holes, the mesh enclosure part comprises an upper mesh enclosure and a lower mesh enclosure, the bracket part comprises an annular upper bracket and a lower bracket with an annular ring, the upper mesh enclosure and the upper bracket are fixedly connected through the cooperation of a first inserting sheet and a first slot, and the lower mesh enclosure and the lower bracket are fixedly connected through the cooperation of a second inserting sheet and a second slot. Preferably, the upper bracket is provided with a first slot, a first inserting piece corresponding to the first slot is arranged on the upper net cover, the first inserting piece is inserted into the first slot and bent to realize the fixed connection of the upper net cover and the upper bracket, the lower bracket is provided with a second slot, a second inserting piece corresponding to the second slot is arranged on the lower net