CN107343251A - Audio-frequency test case - Google Patents
Audio-frequency test case Download PDFInfo
- Publication number
- CN107343251A CN107343251A CN201710641055.4A CN201710641055A CN107343251A CN 107343251 A CN107343251 A CN 107343251A CN 201710641055 A CN201710641055 A CN 201710641055A CN 107343251 A CN107343251 A CN 107343251A
- Authority
- CN
- China
- Prior art keywords
- casing
- audio
- layer
- test case
- frequency test
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000012360 testing method Methods 0.000 title claims abstract description 29
- 229920000742 Cotton Polymers 0.000 claims abstract description 22
- 238000002955 isolation Methods 0.000 claims abstract description 13
- 238000013016 damping Methods 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims description 10
- 229910000838 Al alloy Inorganic materials 0.000 claims description 9
- 230000004888 barrier function Effects 0.000 claims description 3
- 241000209140 Triticum Species 0.000 claims 1
- 235000021307 Triticum Nutrition 0.000 claims 1
- 239000004744 fabric Substances 0.000 claims 1
- 230000035939 shock Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 229910000851 Alloy steel Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005405 multipole Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R29/00—Monitoring arrangements; Testing arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2420/00—Details of connection covered by H04R, not provided for in its groups
- H04R2420/05—Detection of connection of loudspeakers or headphones to amplifiers
Abstract
The invention discloses a kind of shielding that can effectively improve low frequency and absorbability, the audio-frequency test case for effectively improving the antijamming capability that casing influences on earth shock, external sound, it is desirable to provide a kind of shielding that can effectively improve low frequency and absorbability, the audio-frequency test case for effectively improving the antijamming capability that casing influences on earth shock, external sound.The present invention includes the casing that Welded forms, the box house is disposed with damping film case layer, at least two layers isolation audio combination layer and the first acoustical cotton layer from outside to inside, microphone support module is provided with first acoustical cotton layer, the upper end of the casing is provided with the fixture supporting module directly over the microphone support module, and the side of the casing is provided with automatically controlled tank module.The present invention is applied to the technical field of test box.
Description
Technical field
The present invention relates to a kind of test box, more particularly to a kind of audio-frequency test case.
Background technology
Conventional audio screen test box, using three-decker, material is by being respectively inside outside：Metallic plate, medium-density plate, sound-absorbing
Cotton；The material of metal outer is aluminium alloy or steel alloy, increases the steady property of whole casing, reduces the external of general level
The influence to casing is vibrated, the shield effectiveness with certain contactless sound.Medium-density plate is the Midst density of 15-25mm thickness
Plate, it has preferably absorption and isolation effect to low frequency；Acoustical cotton is the acoustical cotton that more than thickness 50mm is not waited, and is mainly used in pair
The absorption of box house external voice, reduce the influence to test such as sound reflection, resonance.Microphone is fixed in audio case
Side, among test product is put into sealing carrier, the sound section of different frequency of the test product to being sent in audio case can be placed
Microphone inside case is received and converted to electric signal transmission to computer, and handling software by audio frequency switchs to electric signal
Audio curve is expressed, and is judged the quality of test product by the contrast with standard curve, is prevented defective products from flowing into assembling；
In development, test result directly feeds back the low mid-high voice frequency performance of product, and product is optimized in itself more specific guidance meaning
Justice.
At present, most audio product has obvious specific aim and stressing property both at home and abroad, focuses on the frequency that human ear is easily differentiated
Section, i.e. audio medium-high frequency section effect, cause audio-frequency test relevant device also targetedly with stressing property, audio case is to medium-high frequency screen
Covering absorption has preferable performance, and low frequency is not considered strictly, and this is advantageous to manufacture and reduce cost；With scientific and technological progress, storage
Capacity is popular, and big storage volume audio lossless form turns into hot topic, and consumer pursues also just increasingly multipole to audio product
Cause, audio product full frequency band superior performance requires its test equipment, examines equipment also to need to meet full frequency band test request, to ground
Vibrations, outside noise antijamming capability also need further to improve, and early stage audio box structure short slab is in low frequency isolation and absorption, survey
Easily test result is influenceed during examination by external interference.
The content of the invention
The technical problems to be solved by the invention are overcome the deficiencies in the prior art, there is provided one kind can effectively improve low frequency
Shielding and absorbability, effectively improve casing on earth shock, external sound influence antijamming capability audio-frequency test case.
The technical solution adopted in the present invention is：The present invention includes the casing that Welded forms, the box house
Damping film case layer is disposed with from outside to inside, isolates audio combination layer and the first acoustical cotton layer at least two layers, described first
Be provided with microphone support module in acoustical cotton layer, the upper end of the casing be provided with positioned at the microphone support module just on
The fixture supporting module of side, the side of the casing is provided with automatically controlled tank module.
Further, the number of plies of the isolation audio combination layer is two layers, and every layer of isolation audio combination layer wraps
Include the Midst density plank layer set gradually from outside to inside positioned at the inside of the casing and the second acoustical cotton layer.
Further, the fixture supporting module include cylinder, supporting plate, slide rail, joint, etc. hold pressure head and support base,
The upper end of the casing is provided with aluminium alloy cover plate, and the support base is arranged at the upper end of the aluminium alloy cover plate, the supporting plate
The upper end of the support base is arranged at, the slide rail is arranged on the end face of the supporting plate, described joint one end and the gas
Cylinder is connected, and the other end of the joint is connected with being adapted to the grade appearance pressure head being installed on the slide rail.
Further, the support base bottom is provided with positioned at the groove upper cavity for waiting and holding immediately below pressure head, described recessed
Epicoele body sealing ring and the sound mouth being connected with the box house are provided with groove upper cavity, the sound mouth is provided with out
Sound mouth sealing ring.
Further, the microphone support module includes microphone, nonmetallic nut, nonmetallic folder and metal branch with one heart
Strut, the lower end of the microphone be fixed on it is described nonmetallic with one heart in folder, it is described nonmetallic clamping with one heart to schedule the metal
The upper end of support bar, the nonmetallic nut, which is arranged, to be fixed on the microphone.
Further, the automatically controlled tank module include electric cabinet shell, control panel, state instruction panel, air gauge,
USB interface and RS232 interface, the electric cabinet shell are fixed on the outer face of the casing, and the control panel is arranged at institute
The upper end of electric cabinet shell is stated, the state instruction panel is arranged in the control panel, and the air gauge is arranged at described
On the end face of electric cabinet shell, the USB interface and the RS232 interface are arranged on the side of the electric cabinet shell.
Further, the first acoustical cotton layer is arranged at the core in the casing in barrier bar Structural assignments.
Further, the lower end surrounding of the casing is provided with shock-absorbing foot pad.
The beneficial effects of the invention are as follows：The casing formed due to the present invention including Welded, it is characterised in that：It is described
Nesting is provided with damping film case layer, at least two layers isolation audio combination layer and the first acoustical cotton to box house successively from outside to inside
Layer, microphone support module is provided with first acoustical cotton layer, the upper end of the casing is provided with positioned at the microphone
Fixture supporting module directly over supporting module, the side of the casing is provided with automatically controlled tank module, so the audio-frequency test
Increase multiple sound insulation vibration-absorptive material inside case, is combined in the form of outer case is nested with internal box, described in the casing
Damping film case layer, at least two layers isolation audio combination layer and first acoustical cotton layer combine successively, this design experiences
Card can effectively improve shielding and the absorbability of low frequency, effectively improve the casing and resist on what earth shock, external sound influenceed
Interference performance.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the mid section figure of the present invention；
Fig. 3 is the structural representation of fixture supporting module；
Fig. 4 is the structural representation of microphone support module；
Fig. 5 is the structural representation of automatically controlled tank module.
Embodiment
As shown in Figures 1 to 5, in the present embodiment, the present invention includes the casing 1 that Welded forms, the casing 1
Internal nesting is provided with damping film case layer 2, two layers of isolation audio combination layer 3 and the first acoustical cotton layer 4 successively from outside to inside, often
The layer isolation audio combination layer 3 includes the Midst density plank layer set gradually from outside to inside positioned at the inside of the casing 1
31 and second acoustical cotton layer 32, i.e., one layer of outermost is the institute being welded using 10mm thickness aluminium alloy plates to the present invention from outside to inside
Casing 1 is stated, its main function makes the casing 1 overall more steady；From manufacture craft, aluminium alloy plate is selected than steel plate matter
Gently, and than plank processing dimension ensure that controllability is higher by several quality-classes, the volume uniformity of casing 1 has more preferable guarantee.
The second layer is the damping film case layer 2 made of 4mm damping rubber skins, and the damping film case layer 2 is mainly by the external world
Vibrations are weakened, and avoid influenceing the soundproof effect of the casing 1.Third layer is to isolate described in first layer in audio combination layer 3
The Midst density plank layer 31, it acts on the influence for being the extraneous low frequency segment of isolation to the internal environment of casing 1.4th layer
It is second acoustical cotton layer 32 isolated described in first layer in audio combination layer 3, its main function is to absorb outside medium-high frequency
Segment is to the influence inside the casing 1.Layer 5 is the Midst density plank isolated described in the second layer in audio combination layer 3
Layer 31, main function, which absorbs, reduces the low frequency segment that internal sound source is sent, and reduces sound reflection and lowers and is shaken caused by sound；
It is that the low frequency sound section for further coming into the external world is completely cut off again simultaneously.Layer 6 is to isolate audio group described in the second layer
Second acoustical cotton layer 32 in layer 3 is closed, its main function is to absorb internal sound source major part sound, reduces sound described
Reflection in casing 1, also further isolate external sound.Layer 7 is to be arranged in barrier bar Structural assignments in the casing 1
First acoustical cotton layer 4 of core, its main function are increase surface of internal cavity products, have good sound absorption characteristics, can
Largely to absorb the acoustic energy inside and outside the casing 1 and reduce the reverberation time.By above-mentioned design structure, the present invention exists
Soundproof effect in 500Hz-20kHz frequency range is notable, substantially reduces caused by low frequency and the noise jamming of high frequency segment and reflection
Reverberation.
In the present embodiment, microphone support module 5, the microphone support are provided with first acoustical cotton layer 4
Module 5 includes microphone 51, nonmetallic nut 52, nonmetallic folder 53 and metallic support rod 54 with one heart, under the microphone 51
End is fixed in the nonmetallic concentric folder 53, and the nonmetallic folder 53 with one heart is fixed on the upper ends of the metallic support rod 54,
The nonmetallic nut 52, which is arranged, to be fixed on the microphone 51, and the microphone 51 is fixed into the nonmetallic folder with one heart
53, its benefit has：Isolate the microphone 51 and metal directly to contact, reduce the influence of external sound and vibrations；Convenient calibration
The dismounting during microphone 51；The not loose not tight state of the microphone 51 can be adjusted to, aspect adjusts the end of microphone 51
Distance of the face to product sound mouth；Use metal to make the metallic support rod 54 in addition, increase support strength and steady, have
Effect avoids external shock from causing stock to produce tuning fork effect.
In the present embodiment, the upper end of the casing 1 is provided with the fixture directly over the microphone support module 5
Supporting module 6, the fixture supporting module 6 include cylinder 61, supporting plate 62, slide rail 63, joint 64, etc. hold pressure head 65 and support
Seat 66, the upper end of the casing 1 is provided with aluminium alloy cover plate 8, and the support base 66 is arranged at the upper end of the aluminium alloy cover plate 8,
The supporting plate 62 is arranged at the upper end of the support base 66, and the slide rail 63 is arranged on the end face of the supporting plate 62, institute
State the one end of joint 64 with the cylinder 61 to be connected, the other end of the joint 64 is with being adapted to the institute being installed on the slide rail 63
State etc. and to hold pressure head 65 and be connected, the bottom of support base 66 is provided with positioned at the groove upper cavity for waiting and holding immediately below pressure head 65
67, epicoele body sealing ring 68 and the sound mouth with being connected inside the casing 1 are provided with the groove upper cavity 67, it is described
Sound mouth is provided with sound mouth sealing ring 69.The supporting plate 62 is fixed on the support base 66, reduces assembling chain, institute
State supporting plate 62 and use alloy steel material, be advantageous to part processing precision guarantee, the supporting plate 62 uses brass material, increases
Its steady property, vibrations are reduced, 90 ° ± 0.1 ° need to be vertically met after assembling；Increase the high-precision slide rail 63 as described etc.
Hold the motion guide of pressure head 65, ensure that the pressure head 65 that holds such as described meets to be less than 0.1 degree with the depth of parallelism of support base 66；The branch
Support seat 66 increase it is described wait hold pressure head 65 down stroke it is firmly spacing, ensure push it is rear it is described wait hold pressure head 65 cavity volume one
Cause.Increase the epicoele body sealing ring 68 and sound mouth sealing ring 69 ensure that it is described etc. appearance pressure head 65 push after sealing.
In the present embodiment, the side of the casing 1 is provided with automatically controlled tank module 7, and the automatically controlled tank module 7 includes automatically controlled
Case shell 71, control panel 72, state instruction panel 73, air gauge 74, USB interface 75 and RS232 interface 76, the RS232
Interface 76 is the outer face that one of the serial communication interface of the present main flow electric cabinet shell 71 is fixed on the casing 1, institute
The upper end that control panel 72 is arranged at the electric cabinet shell 71 is stated, the state instruction panel 73 is arranged at the control panel
In 72, the air gauge 74 is arranged on the end face of the electric cabinet shell 71, the USB interface 75 and the RS232 interface
76 are arranged on the side of the electric cabinet shell 71.This design has the beneficial effect that：The electric cabinet shell 71 is fixed on
The outside of the casing 1, sound reflection and generation noise are influenceed on test in the absence of control element；By the electric cabinet
The modularized design of module 7, only carrier and pressure head need to be changed after change of product so that the casing 1 improves generalization；External
The USB interface 75 and the RS232 interface 76, the burned program of control panel and connection control computer do not have to unpack, and make its operation
It is easy.
In the present embodiment, the lower end surrounding of the casing 1 is provided with shock-absorbing foot pad 9.
The present invention is applied to the technical field of test box.
Although embodiments of the invention are described with practical solution, the limit to implication of the present invention is not formed
System, for those skilled in the art, all it is according to modification of this specification to its embodiment and with the combination of other schemes
Obviously.
Claims (8)
1. a kind of audio-frequency test case, including the casing that Welded forms（1）, it is characterised in that：The casing（1）It is internal by
Damping film case layer is disposed with outside（2）, at least two layers isolation audio combination layer（3）With the first acoustical cotton layer（4）, institute
State the first acoustical cotton layer（4）Inside it is provided with microphone support module（5）, the casing（1）Upper end be provided with positioned at the wheat
Gram wind supporting module（5）The fixture supporting module of surface（6）, the casing（1）Side be provided with automatically controlled tank module（7）.
2. audio-frequency test case according to claim 1, it is characterised in that：The isolation audio combination layer（3）The number of plies be
Two layers, and every layer of isolation audio combination layer（3）It is respectively positioned on the casing（1）Inside set gradually from outside to inside in it is close
Spend plank layer（31）With the second acoustical cotton layer（32）.
3. audio-frequency test case according to claim 1, it is characterised in that：The fixture supporting module（6）Including cylinder
（61）, supporting plate（62）, slide rail（63）, joint（64）, etc. hold pressure head（65）And support base（66）, the casing（1）Upper end
Provided with aluminium alloy cover plate（8）, the support base（66）It is arranged at the aluminium alloy cover plate（8）Upper end, the supporting plate（62）
It is arranged at the support base（66）Upper end, the slide rail（63）It is arranged at the supporting plate（62）End face on, the joint
（64）One end and the cylinder（61）It is connected, the joint（64）The other end be installed on the slide rail with being adapted to（63）On
Described wait holds pressure head（65）It is connected.
4. audio-frequency test case according to claim 3, it is characterised in that：The support base（66）Bottom is provided with positioned at described
Deng appearance pressure head（65）The groove upper cavity of underface（67）, the groove upper cavity（67）Inside it is provided with epicoele body sealing ring（68）
With with the casing（1）The sound mouth that inside is connected, the sound mouth are provided with sound mouth sealing ring（69）.
5. audio-frequency test case according to claim 4, it is characterised in that：The microphone support module（5）Including Mike
Wind（51）, nonmetallic nut（52）, it is nonmetallic with one heart folder（53）And metallic support rod（54）, the microphone（51）Lower end consolidate
Due to the nonmetallic folder with one heart（53）It is interior, the nonmetallic folder with one heart（53）It is fixed on the metallic support rod（54）It is upper
End, the nonmetallic nut（52）It is arranged and is fixed on the microphone（51）On.
6. audio-frequency test case according to claim 1, it is characterised in that：The automatically controlled tank module（7）Outside including electric cabinet
Shell（71）, control panel（72）, state instruction panel（73）, air gauge（74）, USB interface（75）And RS232 interface（76）, institute
State electric cabinet shell（71）It is fixed on the casing（1）Outer face, the control panel（72）It is arranged at outside the electric cabinet
Shell（71）Upper end, the state instruction panel（73）It is arranged at the control panel（72）It is interior, the air gauge（74）Set
In the electric cabinet shell（71）End face on, the USB interface（75）With the RS232 interface（76）It is arranged at described automatically controlled
Case shell（71）Side on.
7. audio-frequency test case according to claim 1, it is characterised in that：First acoustical cotton layer（4）In barrier bar structure row
Cloth is arranged at the casing（1）Interior core.
8. audio-frequency test case according to claim 1, it is characterised in that：The casing（1）Lower end surrounding be provided with
Shock-absorbing foot pad（9）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710641055.4A CN107343251B (en) | 2017-07-31 | 2017-07-31 | audio test box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710641055.4A CN107343251B (en) | 2017-07-31 | 2017-07-31 | audio test box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107343251A true CN107343251A (en) | 2017-11-10 |
| CN107343251B CN107343251B (en) | 2023-11-21 |
Family
ID=60217545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710641055.4A Active CN107343251B (en) | 2017-07-31 | 2017-07-31 | audio test box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107343251B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109246572A (en) * | 2018-09-25 | 2019-01-18 | 上海金东唐科技有限公司 | A kind of frequency sound test smelting tool and microphone parameters test macro |
| CN110784815A (en) * | 2019-11-05 | 2020-02-11 | 苏州市精创测控技术有限公司 | Device and method for testing acoustic performance of product |
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|---|---|---|---|---|
| CN204392572U (en) * | 2014-12-15 | 2015-06-10 | 深圳市佳晨科技有限公司 | A kind of sound proof box |
| CN106645812A (en) * | 2016-10-27 | 2017-05-10 | 中国航空工业集团公司洛阳电光设备研究所 | General tester for testing different types of aviation products |
| CN206195894U (en) * | 2016-09-29 | 2017-05-24 | 深圳市马太智能科技有限公司 | Audio frequency radio frequency test box and audio frequency radio frequency test equipment |
| CN206196055U (en) * | 2016-10-25 | 2017-05-24 | 珠海市运泰利自动化设备有限公司 | Speaker test board |
| CN207150831U (en) * | 2017-07-31 | 2018-03-27 | 珠海市运泰利自动化设备有限公司 | Audio-frequency test case |
-
2017
- 2017-07-31 CN CN201710641055.4A patent/CN107343251B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204392572U (en) * | 2014-12-15 | 2015-06-10 | 深圳市佳晨科技有限公司 | A kind of sound proof box |
| CN206195894U (en) * | 2016-09-29 | 2017-05-24 | 深圳市马太智能科技有限公司 | Audio frequency radio frequency test box and audio frequency radio frequency test equipment |
| CN206196055U (en) * | 2016-10-25 | 2017-05-24 | 珠海市运泰利自动化设备有限公司 | Speaker test board |
| CN106645812A (en) * | 2016-10-27 | 2017-05-10 | 中国航空工业集团公司洛阳电光设备研究所 | General tester for testing different types of aviation products |
| CN207150831U (en) * | 2017-07-31 | 2018-03-27 | 珠海市运泰利自动化设备有限公司 | Audio-frequency test case |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109246572A (en) * | 2018-09-25 | 2019-01-18 | 上海金东唐科技有限公司 | A kind of frequency sound test smelting tool and microphone parameters test macro |
| CN110784815A (en) * | 2019-11-05 | 2020-02-11 | 苏州市精创测控技术有限公司 | Device and method for testing acoustic performance of product |
| CN110784815B (en) * | 2019-11-05 | 2021-02-12 | 苏州市精创测控技术有限公司 | Device and method for testing acoustic performance of product |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107343251B (en) | 2023-11-21 |
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