CN205902074U - Online silence test box of miniature loudspeaker - Google Patents
Online silence test box of miniature loudspeaker Download PDFInfo
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- CN205902074U CN205902074U CN201620705896.8U CN201620705896U CN205902074U CN 205902074 U CN205902074 U CN 205902074U CN 201620705896 U CN201620705896 U CN 201620705896U CN 205902074 U CN205902074 U CN 205902074U
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- loudspeaker
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- mike
- test box
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Abstract
The utility model provides an online silence test box of miniature loudspeaker, include: place the sound absorption box body of the examination loudspeaker that await measuring, the cover is established the external sound insulation box of sound absorption box, it assembles the fashioned sound cotton that inhales with predetermined structure to be provided with in the sound insulation box, the microphone positioner of setting in the sound insulation box, microphone positioner is including the height regulating mechanism and the regulation microphone wobbling position control mechanism that are used for adjusting the microphone height, fix the loudspeaker measurement force applying device in sound absorption box body one side, loudspeaker are measured force applying device and are included: pressure head, slider and linear guide, be provided with a dovetail on the slider, with the linear guide cooperation is followed is dovetail axial direction at 10mm the 130mm within range is adjusted the position of pressure head. Its problem of having solved miniature loudspeaker on line measurement, the frequency response of accurate reduction loudspeaker, THD, R&B, performance parameters such as polarity.
Description
Technical field
This utility model is related to sound equipment test equipment technical field, the quiet test online of more particularly, to a kind of Microspeaker
Case.
Background technology
Wooden case is generally followed closely into using mdf plate by existing loudspeaker manufacturer, then puts common sound absorption rock wool and letter in wooden case
Easy microphone holder simultaneously coordinates the mode of electroacoustic transmission measurement the characterisitic parameter of loudspeaker is measured.But, due to casing
Made using mdf, only serious using resonating during lamina, double-deck plate bulk is again too big.In addition, casing little sound absorption cotton placement cannot
Positioning is it is impossible to reach good sound-absorbing effect very well.And, mike also because space is less it is difficult to install and adjust.Especially
When testing Microspeaker, due to directivity wall, in the case that mike is no accurately positioned, the one of loudspeaker test result can be led to
Cause property and repeatability are very poor.
On the other hand, due to the small volume of Microspeaker, when being tested with artificial Manual press loudspeaker in prior art, pressure
The change of power is serious for the result impact of measurement.
Therefore, prior art is also to be developed.
Utility model content
In view of in place of above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide a kind of Microspeaker quiet online
Sound test box is it is intended to solve the repeatability of existing test device test and concordance is poor, easily affected problem.
In order to achieve the above object, this utility model takes technical scheme below:
A kind of Microspeaker quiet test box online, wherein, comprising:
Place the sound-absorbing casing of loudspeaker to be tested；
It is set in the external sound insulation casing of described sound-absorbing box, be provided with described sound proof box body with predetermined structure assembly molding
Acoustical cotton；
It is arranged on the mike positioner in sound proof box body；Described mike positioner is included for adjusting mike
The height adjustment mechanism of height and the position adjusting mechanism adjusting mike swing；
It is fixed on the loudspeaker measurement force application apparatus of sound-absorbing casing side；Described loudspeaker measurement force application apparatus include: pressure head, cunning
Block and line slideway；
One dovetail groove is provided with described slide block, and described line slideway cooperation, along described dovetail groove axial direction,
In the range of 10mm-130mm, adjust the position of described pressure head.
Described Microspeaker quiet test box online, wherein, described sound insulation casing processes aluminium sheet system by Digit Control Machine Tool
Become；Within the structure precision of described sound insulation casing is 0.02mm.
Described Microspeaker quiet test box online, wherein, quiet test box also includes one to described Microspeaker online
Controller；
Described controller is ptc single-chip microcomputer, is equipped with outward db25pin, i/o interface.
Described Microspeaker quiet test box online, wherein, described height adjustment mechanism include a line channel and with
The slide block of described line channel cooperation；
Mike is fixed on described slide block, and the axial direction along described line channel moves back and forth.
Beneficial effect: a kind of Microspeaker quiet test box online that this utility model provides, corresponding due to being provided with
Test box structure and adjusting means, it is ensured that mike and loudspeaker pressing can accurately be adjusted, solve Microspeaker and exist
The problem of line measurement, precisely reduces the frequency response of loudspeaker, thd, r＆b, the characterisitic parameter such as polarity.
Brief description
Fig. 1 is the schematic diagram of the Microspeaker quiet test box online of this utility model specific embodiment.
Fig. 2 is the mike positioner of this utility model specific embodiment and the schematic diagram of loudspeaker measurement force application apparatus.
Specific embodiment
This utility model provides a kind of Microspeaker quiet test box online.For making the purpose of this utility model, technical side
Case and effect are clearer, clear and definite, and the embodiment that develops simultaneously referring to the drawings further describes to this utility model.Should manage
Solution, specific embodiment described herein only in order to explain this utility model, is not used to limit this utility model.
As shown in figure 1, a kind of Microspeaker quiet test box online for this utility model specific embodiment.Described miniature
Quiet test box includes loudspeaker online: places the sound-absorbing casing 100 of loudspeaker to be tested, is set in the external sound insulation of described sound-absorbing box
Casing 200.
Specifically, described sound insulation casing 200 is processed into by Digit Control Machine Tool by aluminium sheet；The structure essence of described sound insulation casing
Within spending for 0.02mm.
Wherein, it is provided with the acoustical cotton of predetermined structure assembly molding in described sound insulation casing 200.By above-mentioned sound insulation and
The structure setting of sound-absorbing dual chamber, sound-absorbing and sound insulation can be taken into account it is ensured that test effect.And, acoustical cotton is according to case
The practical situations such as body structure size, after weighing, assembled formed combination is placed, and can be good at ensureing casing in sound absorption qualities
Concordance, improves the reliability of test result.
It is arranged on the mike positioner 300 in sound insulation casing 200.Described mike positioner includes: for adjusting
The height adjustment mechanism 310 of section mike height and the position adjusting mechanism 320 adjusting mike swing.
Specifically, as shown in Fig. 2 described height adjustment mechanism 310 include a line channel 311 and with described line channel
The slide block 312 of cooperation.During use, mike a is fixed on described slide block 312, can be along the axial direction of described line channel
Move back and forth thus realizing the altitude mixture control of mike.
By arranging this mike positioner 300, can be good at realizing the height of mike and position adjustments it is ensured that
Mike is at accurate position and is tested, and improves the accuracy of test result.
As shown in figure 1, also setting up the loudspeaker measurement force application apparatus 400 being connected with mike positioner.As shown in Fig. 2
Described loudspeaker measurement force application apparatus 400 include: pressure head 410, slide block 420 and line slideway 430.
One dovetail groove 421 is provided with described slide block 420.Phase with described line slideway 430 is adjusted by dovetail groove 421
Mutually coordinate, it is possible to achieve position adjustments in the range of 10mm-130mm for the pressure head 410.Thus, it is possible to less than 3 cun of satisfaction is all micro-
The measurement requirement of type loudspeaker, has the good suitability.
In preferred embodiment of the present utility model, quiet test box also includes a controller to described Microspeaker online；
Described controller is ptc single-chip microcomputer, is equipped with outward db25pin, i/o interface.Its specific interface definition is as follows: 1pin is that ttl is defeated
Go out；2pin exports for ttl；3pin exports for ttl；4pin exports for ttl；5pin inputs for ttl；6pin inputs for ttl；
25pin is+5v (power input)；25pin is gin (ground connection).
After this controller is set, can make described Microspeaker online quiet test box provide automatization's i/o interface and from
Dynamic streamline electroacoustic transmission measurement communication, realizes automatic measurement and replaces traditional human ear audition station.
It is understood that for those of ordinary skills, can according to the technical solution of the utility model and
This utility model design in addition equivalent or change, and all these change or replace all should belong to appended by this utility model
Scope of the claims.
Claims (4)
1. a kind of Microspeaker online quiet test box it is characterised in that include:
Place the sound-absorbing casing of loudspeaker to be tested；
It is set in the external sound insulation casing of described sound-absorbing box, be provided with described sound proof box body with the suction of predetermined structure assembly molding
Sound cotton；
It is arranged on the mike positioner in sound proof box body；Described mike positioner is included for adjusting mike height
Height adjustment mechanism and adjust mike swing position adjusting mechanism；
It is fixed on the loudspeaker measurement force application apparatus of sound-absorbing casing side；Described loudspeaker measurement force application apparatus include: pressure head, slide block with
And line slideway；
One dovetail groove is provided with described slide block, coordinates with described line slideway, along described dovetail groove axial direction, in 10mm-
In the range of 130mm, adjust the position of described pressure head.
2. Microspeaker according to claim 1 online quiet test box it is characterised in that described sound insulation casing pass through number
Control machine tooling aluminium sheet is made；Within the structure precision of described sound insulation casing is 0.02mm.
3. Microspeaker according to claim 1 online quiet test box it is characterised in that described Microspeaker is quiet online
Sound test box also includes a controller；
Described controller is ptc single-chip microcomputer, is equipped with outward db25pin, i/o interface.
4. Microspeaker according to claim 1 online quiet test box it is characterised in that described height adjustment mechanism bag
Include a line channel and the slide block with the cooperation of described line channel；
Mike is fixed on described slide block, and the axial direction along described line channel moves back and forth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620705896.8U CN205902074U (en) | 2016-07-06 | 2016-07-06 | Online silence test box of miniature loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620705896.8U CN205902074U (en) | 2016-07-06 | 2016-07-06 | Online silence test box of miniature loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205902074U true CN205902074U (en) | 2017-01-18 |
Family
ID=57772349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620705896.8U Active CN205902074U (en) | 2016-07-06 | 2016-07-06 | Online silence test box of miniature loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205902074U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107249164A (en) * | 2017-05-02 | 2017-10-13 | 歌尔股份有限公司 | Audition clamp device for electroacoustic transducer |
| CN109005493A (en) * | 2018-05-29 | 2018-12-14 | 东莞市龙健电子有限公司 | A kind of sound equipment test device |
| CN109286887A (en) * | 2018-09-20 | 2019-01-29 | 苏州岸肯电子科技有限公司 | Silencer box is used in a kind of test of loudspeaker |
-
2016
- 2016-07-06 CN CN201620705896.8U patent/CN205902074U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107249164A (en) * | 2017-05-02 | 2017-10-13 | 歌尔股份有限公司 | Audition clamp device for electroacoustic transducer |
| CN107249164B (en) * | 2017-05-02 | 2019-07-23 | 歌尔股份有限公司 | Audition clamp device for electroacoustic transducer |
| CN109005493A (en) * | 2018-05-29 | 2018-12-14 | 东莞市龙健电子有限公司 | A kind of sound equipment test device |
| CN109005493B (en) * | 2018-05-29 | 2023-11-21 | 东莞市龙健电子有限公司 | Sound test device |
| CN109286887A (en) * | 2018-09-20 | 2019-01-29 | 苏州岸肯电子科技有限公司 | Silencer box is used in a kind of test of loudspeaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 518000 Fengnan nine road 10, Fenghuang community, Baoan District Fuyong street, Shenzhen, Guangdong Patentee after: Fang Bo Technology (Shenzhen) Co., Ltd. Address before: 518103 Fengnan nine road 10, Fenghuang community, Baoan District Fuyong street, Shenzhen, Guangdong Patentee before: Shenzhen Fangyuan Instrument Co., Ltd. |