CN108462934A - A kind of sound equipment test system - Google Patents

A kind of sound equipment test system Download PDF

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Publication number
CN108462934A
CN108462934A CN201810222292.1A CN201810222292A CN108462934A CN 108462934 A CN108462934 A CN 108462934A CN 201810222292 A CN201810222292 A CN 201810222292A CN 108462934 A CN108462934 A CN 108462934A
Authority
CN
China
Prior art keywords
frame
sound equipment
plate
cylinder
bracket
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.)
Pending
Application number
CN201810222292.1A
Other languages
Chinese (zh)
Inventor
刘志峰
贺占魁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Guidebook Measurement And Control Technology Co Ltd
Original Assignee
Shenzhen Guidebook Measurement And Control Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shenzhen Guidebook Measurement And Control Technology Co Ltd filed Critical Shenzhen Guidebook Measurement And Control Technology Co Ltd
Priority to CN201810222292.1A priority Critical patent/CN108462934A/en
Publication of CN108462934A publication Critical patent/CN108462934A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R29/00Monitoring arrangements; Testing arrangements

Abstract

The invention discloses a kind of sound equipments to test system, including:Delivery device and test box;The delivery device includes:Frame structure and delivery mechanism;The delivery mechanism includes:Braced frame, the multiple sliding guide columns being arranged in the braced frame and the first cylinder, the second cylinder being arranged below the top frame, the driving motor being connected on second cylinder, the rotating seat being connected in the driving motor output shaft;The test box includes:Babinet and the measurement jig being arranged in babinet;The measurement jig includes:A pair of of upper bracket and a pair of of lower bracket, first movement cylinder and the second movement cylinder are connected between the upper bracket and lower bracket, third movement cylinder is connected between two first movement cylinders, probe is connected on the third movement cylinder, the second movement cylinder is provided with emulation sound equipment.Sound equipment provided by the present invention tests system, improves testing efficiency and measuring accuracy.

Description

A kind of sound equipment test system
Technical field
The present invention relates to field of audio more particularly to a kind of sound equipment to test system.
Background technology
Sound equipment refers to the sensitive sound general name of human body.Including voice, instrumental music and effect, above-mentioned sound equipment is recorded, The equipment of processing, transmission, amplification and broadcasting is known as stereo set.Including:Sound pick-up outfit, postprocessing device, works carry Body, data signal acquisition equipment, digital-to-analogue conversion equipment, sound card, all round equipment, power amplifier, loud speaker and sound console etc..
Sound equipment in the prior art tests system, is usually all that sound equipment to be tested is directly placed into test box by tester In tested, tester place sound equipment this during, test box be not detected work, leads to its testing efficiency Bottom causes measuring accuracy low simultaneously as test box soundproof effect is bad.
Therefore, the existing technology needs to be improved and developed.
Invention content
In view of above-mentioned deficiencies of the prior art, the purpose of the present invention is to provide a kind of sound equipments to test system, it is intended to solve The problem of sound equipment test system and test efficiency bottom and measuring accuracy bottom in the prior art.
Technical scheme is as follows:
A kind of sound equipment test system, wherein the sound equipment tests system and includes:
Delivery device, the delivery device include:
Frame structure, the frame structure include:Top frame, central frame, bottom framework and frame connecting pole, the top frame Frame, central frame and bottom framework pass through frame connecting pole vertical connection;
Mechanism is delivered, the delivery mechanism includes:Longitudinally disposed braced frame is horizontally installed in the braced frame Multiple sliding guide columns and the first cylinder, the second cylinder being horizontally installed below the top frame be connected to second gas Driving motor on cylinder, the rotating seat for bearing sound equipment being connected in the driving motor output shaft;
The braced frame include upper long margin frame, lower long margin frame and with two connected vertically of upper long margin frame, lower long margin frame Short frame;
Pallet connecting pole is connected between the driving motor output shaft and rotating seat, the pallet connecting pole passes through upper length In frame to braced frame;
The rotating seat includes the pallet mounting plate being connect with pallet connecting pole, is connected to two before and after the pallet mounting plate The tray support plate of side, the acoustical cotton being connected on the outside of the tray support plate, and it is horizontally installed on the tray support plate Pallet;
Test box, the test box include:
Babinet, the babinet include top plate and bottom plate, front side board, back side panel, left plate and right plate, the top plate and top Plate passes through front side board, back side panel, left plate and right plate vertical connection, the top plate and bottom plate, front side board, back side panel, left plate And right plate is all provided with acoustical cotton;
The opening for delivering sound equipment is provided in the middle part of the front side board, the back side panel is provided with safety door;
Measurement jig is provided in the babinet, the measurement jig includes:
A pair of of upper bracket and a pair of of lower bracket, are all longitudinally connected with first movement cylinder between the upper bracket and lower bracket And the second movement cylinder, third movement cylinder, the third mobile column are horizontally connected between two first movement cylinders The probe for testing sound equipment is connected on body, the second movement cylinder is provided with emulation sound equipment;
A pair of upper bracket and lower bracket inner surface are all provided with graduation mark.
Preferably, the sound equipment tests system, wherein the upper long margin frame and lower long margin frame outer surface, which are all provided with, to be made Braced frame does the sliding block moved forward and backward in sliding guide column.
Preferably, the sound equipment tests system, wherein a pair of upper bracket and lower bracket end are all provided with installation Measurement jig is fixed on the inner surface of left plate and right plate by foot by the installation foot.
Preferably, the sound equipment tests system, wherein the left and right sides of the upper long margin frame outer surface is all laterally arranged There is signal wire protective case.
Preferably, the sound equipment tests system, wherein is provided with horizontal tune between the probe and third movement cylinder Locking nub.
Preferably, the sound equipment tests system, wherein the bottom framework lower surface and bottom plate lower surface are all connected with more A support leg, multiple support leg sides are all provided with universal wheel.
Preferably, the sound equipment tests system, wherein useful first cylinder, which is arranged, in first cylinder head portions fixes Block, second cylinder head portions are provided with the second cylinder fixed block.
Preferably, the sound equipment tests system, wherein the safety door one side is provided with multiple for opening and closing safety The hinge of door, the safety door another side are provided with a buckle for fixing safety door.
Preferably, the sound equipment tests system, wherein the frame connecting pole is provided with electrically close to top frame side Case, the central frame front side are provided with for controlling the button for delivering mechanism rotation.
Preferably, the sound equipment tests system, wherein is provided with right angle between the driving motor and pallet connecting pole Retarder.
Compared with prior art, sound equipment provided by the present invention tests system, including:Delivery device and test box;It is described Delivery device includes:Frame structure and delivery mechanism;The delivery mechanism includes:Braced frame is arranged in the braced frame On multiple sliding guide columns and the first cylinder, the second cylinder being arranged below the top frame be connected to second cylinder On driving motor, the rotating seat being connected in the driving motor output shaft;The test box includes:Babinet and setting are in case Internal measurement jig;The measurement jig includes:A pair of of upper bracket and a pair of of lower bracket, between the upper bracket and lower bracket It is connected with first movement cylinder and the second movement cylinder, third movement cylinder is connected between two first movement cylinders, Probe is connected on the third movement cylinder, the second movement cylinder is provided with emulation sound equipment so that uses the sound equipment Test system tests sound equipment to be tested, and two sound equipments are distinguished on placement trays, when test a sound equipment after, Rotating delivery mechanism by driving motor makes another sound equipment be shipped in test box, when test, by another sound Sound is placed on pallet, is saved the time for placing sound equipment, is improved the working time of test equipment, improve testing efficiency, Meanwhile the soundproof effect of test box is good, the noise outside effective isolation improves measuring accuracy.
Description of the drawings
Fig. 1 is the structural schematic diagram of the sound equipment test system preferred embodiment in the present invention.
Fig. 2 is the structural schematic diagram of the delivery mechanism in the sound equipment test system preferred embodiment in the present invention.
Fig. 3 is the first structure schematic diagram of the delivery mechanism in the sound equipment test system preferred embodiment in the present invention.
Fig. 4 is the second structural schematic diagram of the delivery mechanism in the sound equipment test system preferred embodiment in the present invention.
Fig. 5 is the structural schematic diagram of the test box in the sound equipment test system preferred embodiment in the present invention.
Fig. 6 is another structural schematic diagram of the test box in the sound equipment test system preferred embodiment in the present invention.
Fig. 7 is the structural schematic diagram of the measurement jig in the sound equipment test system preferred embodiment in the present invention.
Specific implementation mode
The present invention provides a kind of sound equipment test system, to keep the purpose of the present invention, technical solution and effect clearer, bright Really, referring to the drawings and give an actual example that the present invention is described in more detail.It should be appreciated that specific embodiment described herein It is only used to explain the present invention, be not intended to limit the present invention.
As shown in Figures 1 to 7, in a kind of sound equipment test system that present pre-ferred embodiments provide, the sound equipment test System includes:Delivery device 10, the delivery device 10 include:Frame structure 100, the frame structure 100 include:Top frame 101, central frame 102, bottom framework 103 and frame connecting pole 104, the top frame 101, central frame 102 and bottom framework 103 Pass through 104 vertical connection of frame connecting pole;Mechanism 200 is delivered, the delivery mechanism 200 includes:Longitudinally disposed braced frame 201, the multiple sliding guide columns 202 being horizontally installed in the braced frame 201 and the first cylinder 203 are horizontally installed on described Second cylinder 204 of 101 lower section of top frame, the driving motor 205 being connected on second cylinder 204 are connected to the drive The rotating seat 206 for bearing sound equipment on 205 output shaft of dynamic motor;The braced frame 201 include upper long margin frame 211, under Long margin frame 221 and with 221 connected vertically two upper long margin frame 211, lower long margin frame short frames 231;The driving motor 205 is defeated Pallet connecting pole (not shown) is connected between shaft and rotating seat 206, the pallet connecting pole passes through upper long margin frame 211 To braced frame 201;The rotating seat 206 includes the pallet mounting plate 216 being connect with pallet connecting pole, is connected to the support The tray support plate 226 of 216 front and rear sides of disk mounting plate is connected to the acoustical cotton 236 in 226 outside of the tray support plate, with And it is horizontally installed on the pallet 246 of the tray support plate 226;Test box 20, the test box 20 include:Babinet 300, it is described Babinet 300 includes top plate 301, bottom plate 302, front side board 303, back side panel 304, left plate 305 and right plate 306, the top plate 301 pass through front side board 303,306 vertical connection of back side panel 304, left plate 305 and right plate, the top plate with top plate 302 301, bottom plate 302, front side board 303, back side panel 304, left plate 305 and right plate 306 are all provided with acoustical cotton;The front side board 303 middle parts are provided with the opening 313 for delivering sound equipment, and the back side panel 304 is provided with safety door 314;In the babinet 300 It is provided with measurement jig 400, the measurement jig 400 includes:A pair of of upper bracket 401 and a pair of of lower bracket 402, the upper bracket It is all longitudinally connected with first movement cylinder 203 and second between 401 and lower bracket 402 and moves cylinder 404, two described first are moved It is horizontally connected with third movement cylinder 406 between dynamic cylinder 403, is connected with for test tone on the third movement cylinder 406 Loud probe 416, the second movement cylinder 404 are provided with emulation sound equipment 405;A pair of upper bracket 401 and lower bracket 402 Inner surface is all provided with graduation mark.
When it is implemented, the sound equipment produced needs to test its various parameters (frequency response parameter distortion factor etc.), Sound equipment is mainly placed in test box by the test of the parameter of sound equipment and is tested.Therefore, the key point of patent of the present invention Exactly sound equipment to be tested is shipped in sound equipment test box, is mainly achieved in that:By placing two pallets 246, this two A pallet 246 can place sound equipment to be measured, and tester only needs sound equipment to be tested being placed on two pallets 246, In after a sound equipment tests, rotating mechanism 200 is driven by driving motor 206, the rotating mechanism 200 made rotates, will be another One sound equipment direction of rotation to be measured is to being shipped in test box 10, at this point, tester can remove the sound equipment tested simultaneously The sound equipment that do not test is placed on the pallet 246, the testing time of test equipment is thus extended, improves test effect Rate.
When it is implemented, 202 end of the sliding guide column is fixed by sliding guide column fixed seat 212, these sliding guide columns Fixed seat 212 is arranged on central frame 102 or frame connecting pole 104.
In the further preferred embodiment of the present invention, the upper long margin frame 211 and 221 outer surface of lower long margin frame, which are all provided with, to be made Braced frame 201 does the sliding block 311 moved forward and backward in sliding guide column 202.
In the further preferred embodiment of the present invention, the medium position in central frame 102 is arranged in first cylinder 203, Side of keeping right is arranged in the middle part of top frame 101 in second cylinder 204.
In the further preferred embodiment of the present invention, the left and right sides of 211 outer surface of upper long margin frame is all horizontally arranged with Signal wire protective case 411.
In the further preferred embodiment of the present invention, first cylinder, 203 and second cylinder 204 is all connected to by tracheae Air source (not shown).
In the further preferred embodiment of the present invention, 103 lower surface of the bottom framework and 302 lower surface of bottom plate are all connected with more A support leg 113, multiple 113 sides of the support leg are all provided with universal wheel 123.
In the further preferred embodiment of the present invention, first cylinder end, 203 useful first cylinder fixed blocks of setting 213,204 end set of the second cylinder has the second cylinder fixed block 214.
In the further preferred embodiment of the present invention, first cylinder fixed block 213 is connected with the first air cylinder fixed plate, institute It states the second cylinder fixed block 214 and is connected with the second air cylinder fixed plate.
In the further preferred embodiment of the present invention, the frame connecting pole 104 is provided with electrically close to 101 side of top frame Case 114,102 front side of the central frame are provided with for controlling the button delivered mechanism 200 and rotated.
In the further preferred embodiment of the present invention, right angle is provided between 246 connecting pole of the driving motor 205 and pallet Retarder 207.
Sound equipment test system of the present invention needs to be used cooperatively to carry out test job with other devices such as test boxs, Therefore, rotating seat 206 according to different test boxs have difference be arranged to corresponding size, meanwhile, two pallets 246 also according to The size of different acoustic is arranged its size.
When it is implemented, the delivery device 10 is set to the end of sound equipment production line, by being set in delivery device side A manipulator is set, the manipulator is used to the sound equipment on production line being held on delivery device, then passes through the delivery device Sound equipment is delivered to test box to test, it is to be tested complete and then be clamped to the sound equipment tested by the manipulator In magazine, wherein the sound equipment of test passes is clamped in the magazine for placing certified products, underproof sound equipment is clamped to placement In underproof magazine.
In the further preferred embodiment of the present invention, a pair of upper bracket 401 and lower bracket 402 are close to first movement cylinder 403 sides are all provided with clamping protrusion 412.
When it is implemented, the clamping protrusion 412 is horizontally installed on upper bracket 401 and lower bracket 402, the clamping is convex It plays 412 middle parts and is provided with a support slot, the support slot is used for clamping sliding block 414.
In the further preferred embodiment of the present invention, a pair of upper bracket 401 and 402 end of lower bracket are all provided with and block Hold raised 412 compatible sliding blocks 414.
In the further preferred embodiment of the present invention, it is provided between the second movement cylinder 404 and emulation sound equipment 405 perpendicular Straight adjusting block 425, the vertical adjusting block 425 adjust the height of emulation sound equipment 405 by bolt (not shown).
In the further preferred embodiment of the present invention, the third movement cylinder 406 can be in two first movement cylinders 403 Between move up and down.
In the further preferred embodiment of the present invention, horizontal tune is provided between the probe 416 and third movement cylinder 406 Locking nub 416.
In the further preferred embodiment of the present invention, a pair of upper bracket 401 and 402 end of lower bracket are all provided with installation Measurement jig is fixed on the inner surface of left plate 305 and right plate 306 by foot by the installation foot.
In the further preferred embodiment of the present invention, 314 one side of the safety door is provided with multiple for opening and closing safety door 314 hinge 324.
When it is implemented, hinge 324, which connects, is conducive to the fast opening and closing of the safe people 314, meanwhile, sealing effect is also very It is good.
In the further preferred embodiment of the present invention, 314 another side of the safety door is provided with one for fixing safety door 314 buckle 334.
In the further preferred embodiment of the present invention, the probe 416 and emulation sound equipment 405 are all electrically connected and control centre (not shown), the control centre are also electrically coupled to the display screen for showing various curves.
In conclusion sound equipment provided by the present invention tests system, including:Delivery device and test box;The delivery dress Set including:Frame structure and delivery mechanism;The delivery mechanism includes:Braced frame is arranged more in the braced frame A sliding guide column and the first cylinder, the second cylinder being arranged below the top frame, the drive being connected on second cylinder Dynamic motor, the rotating seat being connected in the driving motor output shaft;The test box includes:Babinet and it is arranged in babinet Measurement jig;The measurement jig includes:A pair of of upper bracket and a pair of of lower bracket, are connected between the upper bracket and lower bracket First movement cylinder and the second movement cylinder, are connected with third movement cylinder between two first movement cylinders, and described the Probe is connected on three movement cylinders, the second movement cylinder is provided with emulation sound equipment so that using sound equipment test system It unites to test sound equipment to be tested, two sound equipments is distinguished on placement trays, after testing a sound equipment, pass through drive Dynamic motor rotation delivers mechanism and another sound equipment is shipped in test box, and when test, another sound equipment is placed Onto pallet, the time for placing sound equipment is saved, the working time of test equipment is improved, improves testing efficiency, meanwhile, it surveys The soundproof effect for trying case is good, and the noise outside effective isolation improves measuring accuracy.
It should be understood that the application of the present invention is not limited to the above for those of ordinary skills can With improvement or transformation based on the above description, all these modifications and variations should all belong to the guarantor of appended claims of the present invention Protect range.

Claims (10)

1. a kind of sound equipment tests system, which is characterized in that the sound equipment tests system and includes:
Delivery device, the delivery device include:
Frame structure, the frame structure include:Top frame, central frame, bottom framework and frame connecting pole, the top frame, Central frame and bottom framework pass through frame connecting pole vertical connection;
Mechanism is delivered, the delivery mechanism includes:Longitudinally disposed braced frame is horizontally installed on more in the braced frame A sliding guide column and the first cylinder, the second cylinder being horizontally installed below the top frame are connected on second cylinder Driving motor, be connected in the driving motor output shaft for bearing the rotating seat of sound equipment;
The braced frame include upper long margin frame, lower long margin frame and with upper long margin frame, lower long margin frame two short sides connected vertically Frame;
Pallet connecting pole is connected between the driving motor output shaft and rotating seat, the pallet connecting pole passes through upper long margin frame To braced frame;
The rotating seat includes the pallet mounting plate being connect with pallet connecting pole, is connected to pallet mounting plate front and rear sides Tray support plate, the acoustical cotton being connected on the outside of the tray support plate, and it is horizontally installed on the support of the tray support plate Disk;
Test box, the test box include:
Babinet, the babinet include top plate and bottom plate, front side board, back side panel, left plate and right plate, and the top plate is logical with top plate Cross front side board, back side panel, left plate and right plate vertical connection, the top plate and bottom plate, front side board, back side panel, left plate and the right side Side plate is all provided with acoustical cotton;
The opening for delivering sound equipment is provided in the middle part of the front side board, the back side panel is provided with safety door;
Measurement jig is provided in the babinet, the measurement jig includes:
A pair of of upper bracket and a pair of of lower bracket are all longitudinally connected with first movement cylinder and the between the upper bracket and lower bracket Two move cylinders, and third movement cylinder is horizontally connected between two first movement cylinders, and the third moves on cylinder It is connected with the probe for testing sound equipment, the second movement cylinder is provided with emulation sound equipment;
A pair of upper bracket and lower bracket inner surface are all provided with graduation mark.
2. sound equipment according to claim 1 tests system, which is characterized in that the upper long margin frame and lower long margin frame outer surface All being provided with makes braced frame do the sliding block moved forward and backward in sliding guide column.
3. sound equipment according to claim 1 tests system, which is characterized in that a pair of upper bracket and lower bracket end are all It is provided with installation foot, measurement jig is fixed on the inner surface of left plate and right plate by the installation foot.
4. sound equipment according to claim 1 tests system, which is characterized in that the left and right sides of the upper long margin frame outer surface All it is horizontally arranged with signal wire protective case.
5. sound equipment according to claim 1 tests system, which is characterized in that set between the probe and third movement cylinder It is equipped with horizontal adjustment block.
6. sound equipment according to claim 1 tests system, which is characterized in that the bottom framework lower surface and bottom plate lower surface Multiple support legs are all connected with, multiple support leg sides are all provided with universal wheel.
7. sound equipment according to claim 1 tests system, which is characterized in that the first cylinder head portions setting useful first Cylinder fixed block, second cylinder head portions are provided with the second cylinder fixed block.
8. sound equipment according to claim 1 tests system, which is characterized in that the safety door one side is provided with multiple use In the hinge for opening and closing safety door, the safety door another side is provided with a buckle for fixing safety door.
9. sound equipment according to claim 1 tests system, which is characterized in that the frame connecting pole is close to top frame side It is provided with electric box, is provided on front side of the central frame for controlling the button for delivering mechanism rotation.
10. sound equipment according to claim 1 tests system, which is characterized in that the driving motor and pallet connecting pole it Between be provided with right-angle reduction device.
CN201810222292.1A 2018-03-16 2018-03-16 A kind of sound equipment test system Pending CN108462934A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810222292.1A CN108462934A (en) 2018-03-16 2018-03-16 A kind of sound equipment test system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810222292.1A CN108462934A (en) 2018-03-16 2018-03-16 A kind of sound equipment test system

Publications (1)

Publication Number Publication Date
CN108462934A true CN108462934A (en) 2018-08-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810222292.1A Pending CN108462934A (en) 2018-03-16 2018-03-16 A kind of sound equipment test system

Country Status (1)

Country Link
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110830903A (en) * 2018-08-10 2020-02-21 惠州迪芬尼声学科技股份有限公司 Testing machine
CN111031417A (en) * 2019-12-03 2020-04-17 珠海市精实测控技术有限公司 Tray type acoustic test shielding box in door

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6784670B1 (en) * 2002-08-21 2004-08-31 The United States Of America As Represented By The Secretary Of The Navy Dual chambered anechoic chamber
CN101039534A (en) * 2006-03-15 2007-09-19 鸿富锦精密工业(深圳)有限公司 Sound detection equipment and automatic transmission device
CN102932727A (en) * 2012-11-15 2013-02-13 昆山迈致治具科技有限公司 Audio test fixture
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

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6784670B1 (en) * 2002-08-21 2004-08-31 The United States Of America As Represented By The Secretary Of The Navy Dual chambered anechoic chamber
CN101039534A (en) * 2006-03-15 2007-09-19 鸿富锦精密工业(深圳)有限公司 Sound detection equipment and automatic transmission device
CN102932727A (en) * 2012-11-15 2013-02-13 昆山迈致治具科技有限公司 Audio test fixture
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

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110830903A (en) * 2018-08-10 2020-02-21 惠州迪芬尼声学科技股份有限公司 Testing machine
GB2577791A (en) * 2018-08-10 2020-04-08 Tymphany Acoustic Tech Huizhou Co Ltd Acoustic testing apparatus
GB2577791B (en) * 2018-08-10 2021-01-20 Tymphany Acoustic Tech Huizhou Co Ltd Acoustic testing apparatus
CN111031417A (en) * 2019-12-03 2020-04-17 珠海市精实测控技术有限公司 Tray type acoustic test shielding box in door

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Application publication date: 20180828