CN204649696U - Acoustical absorption coefficient on-site detecting device - Google Patents
Acoustical absorption coefficient on-site detecting device Download PDFInfo
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- CN204649696U CN204649696U CN201520217700.6U CN201520217700U CN204649696U CN 204649696 U CN204649696 U CN 204649696U CN 201520217700 U CN201520217700 U CN 201520217700U CN 204649696 U CN204649696 U CN 204649696U
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- absorption coefficient
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Abstract
The utility model discloses a kind of acoustical absorption coefficient on-site detecting device, comprise the detecting device of controller, band microphone, described detecting device comprises, send closing box sound source, the annulus contacted with measured material, connecting the sound source support that closes box sound source and annulus and provide support and adjustable for height base for closing box sound source of sound to measured material; Describedly close box sound source and be made up of casing and loudspeaker unit, wherein, described casing is the hollow hexagon of open at one end, and loudspeaker unit is towards uncovered and be positioned at the uncovered one end of casing, and body side is provided with the port that loudspeaker unit connects power amplifier.The utility model overcomes in prior art in test site to the defect installing later acoustic absorbant and carry out the test of acoustics coefficient, and cannot can measure metope, end face and ground, and test result is more accurate, convenient and practical.
Description
Technical field
The utility model relates to a kind of acoustic detecting device, particularly relates to a kind of acoustical absorption coefficient on-site detecting device.
Background technology
Conference hall, cinema, the metope in a lot of place such as KTV, end face and ground need to lay acoustical material, detecting the acoustical behavior of these sound materials is now generally by two kinds of modes, a kind of is measured material is got a fritter in standing wave tube, carry out acoustical behavior detection analysis, another kind detects overall measured material in big room, all there is a defect in above two kinds of modes, that cannot detect by already installed measured material exactly at the scene, simultaneously because material acoustical absorption coefficient test value is by environment, the impacts such as mounting means, therefore comparatively big error is brought, cause test result inaccurate, but also there is no a kind of pick-up unit now, acoustical absorption coefficient detection can be carried out at the scene installing acoustical material.
Summary of the invention
The purpose of this utility model is just to provide one to solve the problem, can at the scene installing acoustic absorbant, to the acoustical absorption coefficient on-site detecting device that its acoustical absorption coefficient detects.
To achieve these goals, the technical solution adopted in the utility model is such: a kind of acoustical absorption coefficient on-site detecting device, and comprise the detecting device of controller, band microphone, wherein microphone is connected with controller, and detecting device is connected with controller by power amplifier; Described detecting device comprises and sends closing box sound source, the annulus contacted with measured material, connecting the sound source support that closes box sound source and annulus and provide support and adjustable for height base for closing box sound source of sound to measured material;
Describedly close box sound source and be made up of casing and loudspeaker unit, wherein, described casing is the hollow hexagon of open at one end, and loudspeaker unit is towards uncovered and be positioned at the uncovered one end of casing, and body side is provided with the port that loudspeaker unit connects power amplifier;
Described annulus with close box sound source and coaxially arrange, and be positioned at casing opening end towards side, described sound source support is three, arrange along casing axis direction, and removably connect with casing and annulus, described microphone is positioned at wherein on a sound source support and near annulus, and can move on described sound source support;
Described base top is provided with adapter assembly, by adapter assembly with close box sound source and removably connect, the opening end making to close casing in box sound source can down or towards side.
As preferably: described adapter assembly comprises the connecting rod of the first interface being positioned at casing one side, the vertical joint being positioned at base top and an end band right angle adapter, described connecting rod one end and first interface removably connect, the other end is removably connected by right angle adapter and vertical joint, and after dismounting lower link, first interface can removably connect with vertical joint.
As preferably: described adapter assembly also comprises and is arranged on second interface of casing away from opening end one end, and described second interface can removably connect with vertical joint, make to close the opening end of casing in box sound source upward.
As preferably: described sound source support and casing removably connect, casing edge is provided with the through hole running through tank ends, and sound source support is provided with spacing ring near one end of casing, and sound source support is through through hole, located by spacing ring and casing, the one end passed is connected with an its thread.
As preferably: described base is adjustable for height tripod.
As preferably: described sound source support adopts metal material to make low reflection configuration, and diameter is 6mm.
As preferably: described toroid size is interior diameter 26mm, overall diameter 280mm, thickness 6mm.
As preferably: described loudspeaker unit selects eight cun of loudspeaker.
As preferably: microphone can move on sound source support, and be specially sound source support and be provided with several pilot hole, microphone and pilot hole removably connect.
Compared with prior art, the utility model has the advantage of: one-piece construction is simply small and exquisite, can arbitrarily movement, conveniently take the detection that acoustical absorption coefficient is carried out at tested scene to, wherein, annulus contacts with measured material, closes box sound source and sends sound wave, with the test surfaces surface arriving measured material after microphone, annulus, through decaying and rebounding, the sound wave rebounded back, again through microphone, by microphone pick twice sound, sends into the acoustical absorption coefficient analyzed in controller and draw measured material.
In the utility model, the casing closing box sound source adopts hexagon, can ensure that sound transmits along its axis direction, loudspeaker unit adopts and selects 8 cun, is arranged in casing, because loudspeaker unit is positioned at the uncovered one end of casing, then there is the concrete of one section of empty van after loudspeaker unit, resonant tank effect can be formed, close the loudspeaker unit that box structure coordinates eight cun, sound source can be made effectively to have extraordinary frequency response curve in 160Hz-8000Hz frequency range, the sound pressure level needed for test can be provided.Sound source support adopts low reflective metal material, supports annulus, and do not disturb the propagation of sound source, ensure that sound source can be good at being transferred to annulus from loudspeaker unit, Zai Yuan road reflects simultaneously.
By adapter assembly, the opening end that can make to close casing in box sound source can down or towards side, is used for measuring the measured material on metope, ground respectively.Can be removably connected with vertical joint by the second interface, the opening end making to close casing in box sound source, is used for measuring the measured material of ceiling upward.
Accompanying drawing explanation
Fig. 1 is the utility model circuit block diagram;
Fig. 2 is the structural representation of opening end towards side of casing in the utility model embodiment 1;
Fig. 3 is the opening end structural representation down of casing in the utility model embodiment 1;
Fig. 4 is the syndeton schematic diagram closing box sound source and sound source support, annulus, microphone in Fig. 2;
Fig. 5 is the opening end structural representation upward of casing in the utility model embodiment 2.
In figure: 1, base; 2, casing; 3, loudspeaker unit; 4, sound source support; 5, annulus; 6, microphone; 7, vertical joint; 8, right angle adapter; 9, connecting rod; 10, vertical plane; 11, end face; 12, ground; 13, first interface; 14, the second interface.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Embodiment 1: see Fig. 1, Fig. 2, Fig. 3, Fig. 4, a kind of acoustical absorption coefficient on-site detecting device, comprise the detecting device of controller, band microphone 6, described microphone 6 is connected with controller, and described detecting device is connected with controller by power amplifier; Described detecting device comprises, send closing box sound source, the annulus 5 contacted with measured material, connecting the sound source support 4 that closes box sound source and annulus 5 and provide support and adjustable for height base 1 for closing box sound source of sound to measured material; Describedly close box sound source and be made up of casing 2 and loudspeaker unit 3, wherein, the hollow hexagon of described casing 2 in open at one end, loudspeaker unit 3 is towards uncovered and be positioned at the uncovered one end of casing 2, and casing 2 side is provided with the port that loudspeaker unit 3 connects power amplifier; Described annulus 5 with close box sound source and coaxially arrange, and be positioned at casing 2 opening end towards side, described sound source support 4 is three, arrange along casing 2 axis direction, and removably connect with casing 2 and annulus 5, described microphone 6 is positioned at wherein on a sound source support 4 and near annulus 5, and can move on described sound source support 4; Described base 1 top is provided with adapter assembly, by adapter assembly with close box sound source and removably connect, the opening end making to close casing 2 in box sound source can down or towards side.
In the present embodiment, described base 1 is adjustable for height tripod, and described sound source support 4 adopts low reflection
structuremake, diameter is 6mm, and described annulus 5 is of a size of interior diameter 26mm, overall diameter 280mm, thickness 6mm, and described loudspeaker unit 3 selects eight cun of loudspeaker; The sound source support 4 being provided with microphone 6 is provided with several pilot hole, and microphone 6 and one of them pilot hole removably connect.
In the present embodiment, described adapter assembly comprises the connecting rod 9 of the first interface 13 being positioned at casing 2 one side, the vertical joint 7 being positioned at base 1 top and an end band right angle adapter 8, described connecting rod 9 one end and first interface 13 removably connect, the other end is removably connected by right angle adapter 8 and vertical joint 7, and after dismounting lower link 9, first interface 13 can removably connect with vertical joint 7.
In the present embodiment, described sound source support 4 is detachably connected as with casing 2, casing 2 edge is provided with the through hole running through casing 2 two ends, sound source support 4 is provided with spacing ring near one end of casing 2, sound source support 4 is through through hole, located by spacing ring and casing 2, the one end passed is connected with an its thread.
During use, can first by base 1 with close box sound source and be connected, also can first will close after box sound source has been connected with other assemblies, be finally connected with base 1, mounting means be versatile and flexible, we herein only wherein a kind of mode be described.
Suppose the acoustical behavior now needing to test the measured material that vertical plane 10 is laid, need to make the opening end closing casing 2 in box sound source towards side, now, do not need the connecting rod 9 used in adapter assembly, first the vertical joint 7 of the first interface 13 of casing 2 with base 1 top is connected, then at the opening end of casing 2, sound source support 4 is installed, sound source support 4 is through the through hole at casing 2 edge, one spacing by spacing ring, the other end passed connects with nut, and then mounting circular ring 5, connected mode also can be threaded, casing 2 after installing and annulus 5 are coaxially arranged.Then, a sound source support 4 installs microphone 6 wherein.
Now, one-piece construction installation, then mounting circuit, be connected microphone 6 with controller, and loudspeaker unit 3 is connected power amplifier by the port on casing 2, is connected with controller by power amplifier.
During use, controller sends signal, after power amplifier, loudspeaker unit 3, send sound wave, gathers the signal before measured material reflection and after launching, send into comparative analysis in controller, draw the acoustical absorption coefficient of this measured material through microphone 6.
In the utility model, the function that controller realizes is identical with the controller function of existing acoustical absorption coefficient pick-up unit, is all to obtain data analysis to draw acoustics coefficient.And detecting device has the advantage that existing equipment cannot carry out on-the-spot test.
In addition, the structure after installing as above, if need the measured material detecting end face 11 or ground 12, then needs the opening end making to close casing 2 in box sound source to face upward or downward.Concrete mode is:
The first interface 13 of casing 2 is disassembled with the vertical joint 7 of base 1, connecting rod 9 is arranged on therebetween, because right angle adapter 8 is with by connecting rod 9, then after vertical connecting joint 7, be level, and then be connected with the first interface 13 of casing 2 side, just can make casing 2 opening end down.Due to base 1 height adjustable, by the height of adjusting base 1, annulus 5 can be made to be attached on ground 12, the acoustical material on ground 12 is measured.
Embodiment 2: see Fig. 5, described adapter assembly also comprises and is arranged on second interface 14 of casing 2 away from opening end one end, and described second interface 14 can removably connect with vertical joint 7, and all the other are identical with embodiment 1.
The present embodiment not only can measure side and ground 12, can also measure ceiling.
Claims (9)
1. an acoustical absorption coefficient on-site detecting device, comprise the detecting device of controller, band microphone (6), wherein microphone (6) is connected with controller, and detecting device is connected with controller by power amplifier; It is characterized in that: described detecting device comprises and sends closing box sound source, the annulus (5) contacted with measured material, connecting the sound source support (4) that closes box sound source and annulus (5) and provide support and adjustable for height base (1) for closing box sound source of sound to measured material;
Describedly close box sound source and be made up of casing (2) and loudspeaker unit (3), wherein, the hollow hexagon of described casing (2) in open at one end, loudspeaker unit (3) is towards uncovered and be positioned at the uncovered one end of casing (2), and casing (2) side is provided with the port that loudspeaker unit (3) connects power amplifier;
Described annulus (5) with close box sound source and coaxially arrange, and be positioned at casing (2) opening end towards side, described sound source support (4) is three, arrange along casing (2) axis direction, and removably connect with casing (2) and annulus (5), it is upper and near annulus (5) that described microphone (6) is positioned at a wherein sound source support (4), and can be upper mobile described sound source support (4);
Described base (1) top is provided with adapter assembly, by adapter assembly with close box sound source and removably connect, the opening end making to close casing (2) in box sound source can down or towards side.
2. acoustical absorption coefficient on-site detecting device according to claim 1, it is characterized in that: described adapter assembly comprises the connecting rod (9) at the first interface (13) being positioned at casing (2) side, the vertical joint (7) being positioned at base (1) top and end band right angle adapter (8), described connecting rod (9) one end and first interface (13) removably connect, the other end is removably connected by right angle adapter (8) and vertical joint (7), and after dismounting lower link (9), first interface (13) can removably connect with vertical joint (7).
3. acoustical absorption coefficient on-site detecting device according to claim 2, it is characterized in that: described adapter assembly also comprises and is arranged on second interface (14) of casing (2) away from opening end one end, described second interface (14) can removably connect with vertical joint (7), makes to close the opening end of casing (2) in box sound source upward.
4. acoustical absorption coefficient on-site detecting device according to claim 1, it is characterized in that: described sound source support (4) and casing (2) removably connect, casing (2) edge is provided with the through hole running through casing (2) two ends, sound source support (4) is provided with spacing ring near one end of casing (2), sound source support (4) is through through hole, located by spacing ring and casing (2), the one end passed is connected with an its thread.
5. acoustical absorption coefficient on-site detecting device according to claim 1, is characterized in that: described base (1) is adjustable for height tripod.
6. acoustical absorption coefficient on-site detecting device according to claim 1, is characterized in that: described sound source support (4) adopts metal material to make low reflection configuration, and diameter is 6mm.
7. acoustical absorption coefficient on-site detecting device according to claim 1, is characterized in that: described annulus (5) is of a size of interior diameter 26mm, overall diameter 280mm, thickness 6mm.
8. acoustical absorption coefficient on-site detecting device according to claim 1, is characterized in that: described loudspeaker unit (3) selects eight cun of loudspeaker.
9. acoustical absorption coefficient on-site detecting device according to claim 1, is characterized in that: microphone (6) can be upper mobile at sound source support (4), and be specially sound source support (4) and be provided with several pilot hole, microphone (6) and pilot hole removably connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520217700.6U CN204649696U (en) | 2015-04-10 | 2015-04-10 | Acoustical absorption coefficient on-site detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520217700.6U CN204649696U (en) | 2015-04-10 | 2015-04-10 | Acoustical absorption coefficient on-site detecting device |
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| Publication Number | Publication Date |
|---|---|
| CN204649696U true CN204649696U (en) | 2015-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520217700.6U Active CN204649696U (en) | 2015-04-10 | 2015-04-10 | Acoustical absorption coefficient on-site detecting device |
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| CN (1) | CN204649696U (en) |
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2015
- 2015-04-10 CN CN201520217700.6U patent/CN204649696U/en active Active
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