Immersion type omnidirectional sound pickup device

Abstract

An immersion type omnidirectional sound pickup device comprises a spherical body and a plurality of pickup microphones surrounding the spherical body and penetrating into the spherical body, and is characterized in that the pickup microphones comprise an upper hemispherical pickup microphone and a lower hemispherical pickup microphone; and the tail end, penetrating into the spherical body, of the lower hemispherical pickup microphone adjusts the angle extending out of the spherical body through an angle adjusting bracket. According to the immersion type omnidirectional sound pickup device, the upper microphone and the lower microphone are adopted, and the angle of the lower microphone is adjustable, so that the direction and position information of a sound source is reserved while sound is picked up, and the defect that a single microphone is placed in different pickup occasions for pickup and has no direction and position information is overcome; differential pickup effects are achieved, and the pickup effect is improved.

Description

[Technical field]

[0001] The utility model relates to the technical field of microphones, in particular to the technical field of microphones with omnidirectional sound pickup for immersive sound effects. [Background technology]

[0002] A pickup, also known as a microphone, is a pickup device used to collect ambient sound on site and transmit it to the back-end equipment. Generally speaking, it is composed of a microphone head and an audio amplifier circuit. Pickups are generally divided into digital pickups and analog pickups. A digital pickup is a sound sensor device that converts analog audio signals into digital signals through a digital signal processing system and performs corresponding digital signal processing. An analog pickup simply uses a general analog circuit to amplify the sound collected by the microphone.

[0003] According to the transmission principle of sound waves, the sound heard by people at the scene of the sound is transmitted and reflected from all directions and mixed together before being heard by people. The existing audio and video technology has been constantly improved in order to reproduce the sound after recording with immersive sound effect, or to put it more precisely, with immersive sound effect. This is the goal that the audio technology field constantly pursues. However, the audio presentation opportunities are artificially processed through post-production. Considering the propagation and superposition effects of sound, if the audience is to have an immersive sensory effect, it is also necessary to meet the limitation that the listener is in the best position for the superposition effect of the sound field. At the same time, multiple speakers need to be configured to simulate a complete immersive sound field. Such an effect is not only difficult to achieve, but also has very high requirements for equipment technology, and naturally the cost required is also high.

[0004] The technical research and development team of this technology has been committed to obtaining the best live immersive sound effect, and fully reproducing the sound information in the real environment and presenting it in the audio / video system. The Chinese patent proposed by the design and development team before: CN202320906616.X omnidirectional pickup device, discloses the earliest prototype designed by the project team, a spherical pickup, and multiple pickup microphones are arranged on the sphere to collect sound. However, in the prior art, the equipment will be set up by a support frame or hoisting method according to the on-site conditions. Depending on the size of the venue and the height of the ceiling, the equipment is in different spatial positions in the sound field, and the pickup microphone cannot be adjusted, resulting in the restoration of the real sound effect. There is still a lack of effect, so further adjustment and improvement are needed to address this problem. [Summary of the invention]

[0005] In view of the above problems, the utility model proposes an iteratively updated omnidirectional sound pickup device, which adopts a pickup microphone setting structure with adjustable height angles and an all-round sound pickup layout scheme, thereby overcoming the problem that the device has different collection effects when placed in different sound pickup occasions and in different sound field space positions. By adjusting the angle on site, differentiated sound pickup effects are achieved, which improves the sound pickup effect and perfect presentation.

[0006] The immersive sound type omnidirectional sound pickup device involved in the utility model comprises a spherical body and a plurality of sound pickup microphones surrounding the spherical body and penetrating into the spherical body. The characteristic is that the sound pickup microphone comprises an upper hemisphere sound pickup microphone and a lower hemisphere sound pickup microphone, and the end of the lower hemisphere sound pickup microphone penetrating into the spherical body is adjusted to extend out of the spherical body at an angle through an angle adjustment bracket.

[0007] The angle adjustment bracket includes an operating knob, a rotating screw, a screw nut, a lifting plate and a microphone rotating bracket, wherein the operating knob is arranged outside the spherical body, and the operating knob drives the rotating screw to rotate. An engaging screw nut is sleeved on the lower part of the rotating screw, and the rotating screw passes through the lifting plate, and the screw nut is fastened to the lifting plate by screws. A plurality of microphone rotating brackets are evenly distributed in the circumferential direction of the lifting plate, and the end of the lower hemisphere pickup microphone is assembled in a fixing ring, and the fixing ring of the lower hemisphere pickup microphone is hingedly installed with the microphone rotating bracket.

[0008] The rotating screw is a rotating screw assembly, which includes a first screw, a first transmission gear, a second transmission gear, a third transmission gear and a second screw, wherein the second transmission gear is a two-stage compound transmission gear, the first screw is linked to the operating knob, the first transmission gear is fixed at the lower part of the first screw, the first gear of the second transmission gear is meshed with the first transmission gear for transmission, and the second gear of the second transmission gear is meshed with the third transmission gear for transmission, the third transmission gear is fixed at the upper part of the second screw to drive the rotation of the second screw, and the lower part of the second screw is sleeved with the meshing screw nut.

[0009] The angular velocity ratio of the first screw rod to the second screw rod is 1:2 to 1:3.

[0010] A bearing fixing base plate and an upper hemisphere microphone mounting plate are also provided in the spherical body. The bearing fixing base plate is fixedly mounted on the bottom of the spherical body, and the upper hemisphere microphone mounting plate is mounted on the bearing fixing base plate and the upper part of the lifting plate through 6 connecting rods.

[0011] The upper hemisphere sound pickup microphone is mounted on the upper hemisphere microphone mounting plate through a fixing ring and a fixing bracket.

[0012] The lifting plate is also provided with a plurality of guide slide columns, one end of which is fixed on the upper hemisphere microphone mounting plate, and the other end is fixed on the bearing fixing base plate. The guide slide column passes through the lifting plate and guides the lifting plate to slide between the upper hemisphere microphone mounting plate and the bearing fixing base plate.

[0013] The lifting plate is provided with three guide slide post positioning holes, correspondingly provided with three guide slide posts, and sliding guide sleeves are fixedly installed in the guide slide post positioning holes. The lifting plate is lifted and slidably mounted on the guide slide posts with the sliding guide sleeves.

[0014] The pickup microphone is assembled on the through hole of the spherical body through an installation component, and the installation component includes an outer silicone sleeve and an inner silicone sleeve, wherein the outer silicone sleeve is arranged between the through hole of the spherical body and the pickup microphone, and its inner ring is adapted to the inserted pickup microphone, and the inner silicone sleeve is arranged between the pickup microphone and the fixing ring.

[0015] The immersive sound type omnidirectional sound pickup device also includes a plurality of hanging rings, which are evenly distributed on the circumference of the upper hemisphere of the spherical body and are fixed on the upper hemisphere microphone mounting plate through hanging ring brackets.

[0016] The immersive sound type omnidirectional sound pickup device involved in the utility model is an immersive sound type omnidirectional sound pickup device of the latest form after iterative updates. The device includes a spherical body and a plurality of pickup microphones surrounding the spherical body and inserted into the spherical body. The characteristic is that the pickup microphone includes an upper hemisphere pickup microphone and a lower hemisphere pickup microphone, and the end of the lower hemisphere pickup microphone inserted into the spherical body is adjusted to extend out of the spherical body by an angle adjustment bracket. The immersive sound type omnidirectional sound pickup device adopts a microphone setting structure with adjustable height angles and an all-round sound pickup arrangement scheme, which overcomes the problem that the device is placed in different sound pickup occasions and in different sound field space positions, and has different collection effects. By adjusting the angle on site, differentiated pickup effects are achieved, which improves the pickup effect and perfect presentation.

Brief Description of the Drawings

[0017] Figure 1 It is an overall three-dimensional schematic diagram of the immersive sound type omnidirectional sound pickup device involved in the utility model;

[0018] Figure 2 It is a schematic diagram of an overall top view of the immersive sound type omnidirectional sound pickup device involved in the utility model;

[0019] Figure 3 It is a structural cross-sectional view of the immersive sound type omnidirectional sound pickup device involved in the utility model;

[0020] Figure 4 It is a structural exploded diagram of the immersive sound type omnidirectional sound pickup device involved in the utility model;

[0021] Wherein: 100, spherical body; 10, sound pickup microphone; 11, upper hemisphere sound pickup microphone; 12, lower hemisphere sound pickup microphone; 13, outer silicone sleeve; 14, inner silicone sleeve; 15, fixing ring;

[0022] 20. Operation knob; 30. Rotating screw; 31. Screw nut; 32. Lifting plate; 33. Microphone rotating bracket; 34. First screw; 35. First transmission gear; 36. Second transmission gear; 37. Third transmission gear; 38. Second screw;

[0023] 40. Bearing fixing base plate; 41. Guide column; 42. Sliding guide sleeve;

[0024] 50. Upper hemisphere microphone mounting plate; 51. Connecting rod;

[0025] 60. Lifting ring; 61. Lifting ring bracket. [Specific implementation method]

[0026] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments, examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0027] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0028] Please refer to the attached Figure 1 and attached Figure 2 , which shows an immersive sound type omnidirectional sound pickup device, including a spherical body 100 and a plurality of sound pickup microphones 10 surrounding the spherical body 100 and penetrating into the spherical body 100, characterized in that the sound pickup microphone 10 includes an upper hemisphere sound pickup microphone 11 and a lower hemisphere sound pickup microphone 12, and the end of the lower hemisphere sound pickup microphone 12 penetrating into the spherical body 100 is adjusted to extend out of the spherical body 100 by an angle adjustment bracket.

[0029] Please refer to the attached Figure 3 and attached Figure 4, which shows the internal structure thereof, wherein the angle adjustment bracket includes an operating knob 20, a rotating screw 30, a screw nut 31, a lifting plate 32 and a microphone rotating bracket 33, wherein the operating knob 20 is arranged outside the spherical body 100, and the operating knob 20 drives the rotating screw 30 to rotate, and an engaged screw nut 31 is sleeved on the lower part of the rotating screw 30, the rotating screw 30 passes through the lifting plate 32, and the screw nut 31 is fastened to the lifting plate 32 by screws, and a plurality of microphone rotating brackets 33 are evenly distributed in the circumferential direction of the lifting plate 32, and the end of the lower hemisphere pickup microphone 12 is assembled in the fixing ring, and the fixing ring of the lower hemisphere pickup microphone is hingedly installed with the microphone rotating bracket 33.

[0030] The rotating screw 30 is a rotating screw assembly, which includes a first screw 34, a first transmission gear 35, a second transmission gear 36, a third transmission gear 37 and a second screw 38, wherein the second transmission gear 36 is a two-stage compound transmission gear, the first screw 34 is linked with the operating knob 20, the first transmission gear 35 is fixed at the lower part of the first screw 34, the first gear of the second transmission gear 36 is meshed with the first transmission gear 35, and the second gear of the second transmission gear 36 is meshed with the third transmission gear 37, and the third transmission gear 37 is fixed on the upper part of the second screw 38 to drive the rotation of the second screw 38. According to the schematic diagram, it can be clearly seen that a meshing screw 31 is sleeved at the lower part of the second screw 38.

[0031] The angular velocity ratio of the first screw rod to the second screw rod is 1:2 to 1:3.

[0032] A bearing fixing base plate 40 and an upper hemisphere microphone mounting plate 50 are also provided in the spherical body 100 . The bearing fixing base plate 40 is fixedly mounted on the bottom of the spherical body 100 , and the upper hemisphere microphone mounting plate 50 is overhead supported and mounted above the bearing fixing base plate 40 and the lifting plate 32 by six connecting rods 51 .

[0033] In fact, from the perspective of installation structure and movement logic, the bearing fixed base plate 40 is first installed and fixed in the spherical body 100, and then the lifting plate is suspended in the spherical body by rotating the screw assembly, and then the upper hemisphere microphone mounting plate 50 is installed on the two through the connecting rod 51, and the load-bearing component is the bearing fixed base plate 40.

[0034] The upper hemisphere sound pickup microphone is mounted on the upper hemisphere microphone mounting plate through a fixing ring and a fixing bracket.

[0035] Because the lifting plate 32 is the component that directly drives the lower hemisphere pickup microphone 1 to rotate, the second screw 38 is a transmission component that drives the lifting plate 32 to move up and down through the screw nut 31. In order to keep the lifting plate 32 stable and move smoothly during the lifting process, a guide structure needs to be designed.

[0036] Please refer to the attached Figure 3 It is shown in the figure that a guide slide column 41 is designed around the lifting plate 32. Several guide slide columns can be set on the lifting plate 32. In order to balance the force and prevent shaking, two, three or four guide slide columns are generally designed, and uniform distribution on the circumference needs to be considered.

[0037] One end of the guide slide column 41 is fixed on the upper hemisphere microphone mounting plate 50 , and the other end is fixed on the bearing fixing base plate 40 . The guide slide column 41 passes through the lifting plate 32 , and guides the lifting plate 32 to slide between the upper hemisphere microphone mounting plate 50 and the bearing fixing base plate 40 .

[0038] In this embodiment, specifically, three guide slide column positioning holes are provided on the lifting plate 32, corresponding to which three guide slide columns 41 are configured. Sliding guide sleeves 42 are fixedly assembled in the guide slide column positioning holes, and the lifting plate is lifted and slidably mounted on the guide slide columns 41 with the sliding guide sleeves 42.

[0039] The pickup microphone 10 is assembled on the through hole of the spherical body 100 through an installation component, and the installation component includes an outer silicone sleeve 13 and an inner silicone sleeve 14, wherein the outer silicone sleeve 13 is arranged between the through hole of the spherical body 100 and the pickup microphone 10, and its inner ring is adapted to the inserted pickup microphone 10, and the inner silicone sleeve 14 is arranged between the pickup microphone 10 and the fixing ring 15.

[0040] The immersive sound type omnidirectional sound pickup device further comprises a plurality of hanging rings 60, which are evenly distributed on the circumference of the upper hemisphere of the spherical body 100 and are fixed on the upper hemisphere microphone mounting plate 50 via hanging ring brackets 61. The hanging rings 60 are used for hanging the immersive sound type omnidirectional sound pickup device.

[0041] The immersive sound type omnidirectional sound pickup device involved in the utility model is an immersive sound type omnidirectional sound pickup device of the latest form after iterative update. The device includes a spherical body and a plurality of pickup microphones surrounding the spherical body and penetrating into the spherical body. The characteristic is that the pickup microphone includes an upper hemisphere pickup microphone and a lower hemisphere pickup microphone, and the end of the lower hemisphere pickup microphone penetrating into the spherical body is adjusted by an angle adjustment bracket to extend out of the spherical body. The immersive sound type omnidirectional sound pickup device adopts a combination of upper and lower layers of multiple microphones, an angle linkage of the lower layer microphone, an adjustable microphone setting structure, and an all-round sound pickup arrangement scheme, which overcomes the problem that a single microphone is placed in different sound pickup occasions and in different sound field space positions, and has different collection effects. By adjusting the angle on site, a differentiated sound pickup effect is achieved, which improves the sound pickup effect and perfect presentation.

[0042] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model is disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content disclosed above without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiments according to the technology of the utility model, which does not depart from the content of the technical solution of the utility model, belongs to the scope of the technical solution of the utility model.

Claims

1. An immersive sound type omnidirectional sound pickup device, comprising a spherical body and a plurality of sound pickup microphones surrounding the spherical body and penetrating into the spherical body, characterized in that: The pickup microphone comprises an upper hemisphere pickup microphone and a lower hemisphere pickup microphone. The end of the lower hemisphere pickup microphone that penetrates into the spherical body can adjust the angle of the end extending out of the spherical body through an angle adjustment bracket.

2. The immersive sound type omnidirectional sound pickup device according to claim 1, characterized in that: The angle adjustment bracket includes an operating knob, a rotating screw, a screw nut, a lifting plate and a microphone rotating bracket, wherein the operating knob is arranged outside the spherical body, and the operating knob drives the rotating screw to rotate. An engaging screw nut is sleeved on the lower part of the rotating screw, and the rotating screw passes through the lifting plate, and the screw nut is fastened to the lifting plate by screws. A plurality of microphone rotating brackets are evenly distributed in the circumferential direction of the lifting plate, and the end of the lower hemisphere pickup microphone is assembled in a fixing ring, and the fixing ring of the lower hemisphere pickup microphone is hingedly installed with the microphone rotating bracket.

3. The immersive sound type omnidirectional sound pickup device according to claim 2, characterized in that: The rotating screw is a rotating screw assembly, which includes a first screw, a first transmission gear, a second transmission gear, a third transmission gear and a second screw, wherein the second transmission gear is a two-stage compound transmission gear, the first screw is linked to the operating knob, the first transmission gear is fixed at the lower part of the first screw, the first gear of the second transmission gear is meshed with the first transmission gear for transmission, and the second gear of the second transmission gear is meshed with the third transmission gear for transmission, the third transmission gear is fixed at the upper part of the second screw to drive the rotation of the second screw, and the lower part of the second screw is sleeved with the meshing screw nut.

4. The immersive sound type omnidirectional sound pickup device according to claim 3, characterized in that: The angular velocity ratio of the first screw rod to the second screw rod is 1:2 to 1:

3.

5. The immersive sound type omnidirectional sound pickup device according to claim 2, characterized in that: A bearing fixing base plate and an upper hemisphere microphone mounting plate are also provided in the spherical body. The bearing fixing base plate is fixedly mounted on the bottom of the spherical body, and the upper hemisphere microphone mounting plate is mounted on the bearing fixing base plate and the upper part of the lifting plate through 6 connecting rods.

6. The immersive sound type omnidirectional sound pickup device according to claim 5, characterized in that: The upper hemisphere sound pickup microphone is mounted on the upper hemisphere microphone mounting plate through a fixing ring and a fixing bracket.

7. The immersive sound type omnidirectional sound pickup device according to claim 5, characterized in that: The lifting plate is also provided with a plurality of guide slide columns, one end of which is fixed on the upper hemisphere microphone mounting plate, and the other end is fixed on the bearing fixing base plate. The guide slide column passes through the lifting plate and guides the lifting plate to slide between the upper hemisphere microphone mounting plate and the bearing fixing base plate.

8. The immersive sound type omnidirectional sound pickup device according to claim 4, characterized in that: The lifting plate is provided with three guide slide post positioning holes, correspondingly provided with three guide slide posts, and sliding guide sleeves are fixedly installed in the guide slide post positioning holes. The lifting plate is lifted and slidably mounted on the guide slide posts with the sliding guide sleeves.

9. The immersive sound type omnidirectional sound pickup device according to claim 1, characterized in that: The pickup microphone is assembled on the through hole of the spherical body through an installation component, and the installation component includes an outer silicone sleeve and an inner silicone sleeve, wherein the outer silicone sleeve is arranged between the through hole of the spherical body and the pickup microphone, and its inner ring is adapted to the inserted pickup microphone, and the inner silicone sleeve is arranged between the pickup microphone and the fixing ring.

10. The immersive sound type omnidirectional sound pickup device according to claim 6, characterized in that: The immersive sound type omnidirectional sound pickup device also includes a plurality of hanging rings, which are evenly distributed on the circumference of the upper hemisphere of the spherical body and are fixed on the upper hemisphere microphone mounting plate through hanging ring brackets.

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