CN106454680B - The checkout area and test method of loudspeaker sound - Google Patents
The checkout area and test method of loudspeaker sound Download PDFInfo
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- CN106454680B CN106454680B CN201611048500.8A CN201611048500A CN106454680B CN 106454680 B CN106454680 B CN 106454680B CN 201611048500 A CN201611048500 A CN 201611048500A CN 106454680 B CN106454680 B CN 106454680B
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- test
- sound
- loudspeaker
- confined space
- test panel
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- 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
- H04R29/001—Monitoring arrangements; Testing arrangements for loudspeakers
Abstract
The invention discloses a kind of checkout areas of loudspeaker sound, checkout area is that a normal room is transformed, including a confined space, one Stilt layer is set at the top of confined space, confined space center of top opens up a round instrument connection, test panel is installed on instrument connection, the fixture of test panel setting installation loudspeaker, the horizontal plane of the top horizontal of the plate face and confined space of test panel is overlapped, the top in room is fixed on by lifting device, instrument connection surrounding installs soft polymer material, is completely closed environment for test panel and instrument connection formation；In Stilt layer, five blocks of asbestos boards are arranged in the surrounding of lifting device, form a rectangular-shape sound-absorbing space, and in confined space, the microphone for receiving sound, microphone connecting test control module are arranged immediately below test panel.Checkout area structure setting proposed by the invention is reasonable, has reformed intrinsic tactic pattern in the prior art, has solved the problems, such as the installation that can not be solved always for a long time, have a good application prospect.
Description
Technical field
The present invention relates to a kind of checkout area of loudspeaker sound and test methods, belong to loudspeaker the field of test technology.
Background technique
Loudspeaker sound test, it is necessary to be carried out in free found field, test cabinet is the laboratory for simulating free found field.
In the prior art since the space of test cabinet is arranged, often on the metope perpendicular to the ground of screened room or ground
Upper installation test panel is used to install tested speaker,
If tested speaker is mounted on the metope perpendicular to the ground of screened room, since metope is gone back between microphone
There are upper and lower roof and ground, and the layer height due to building itself limits, and the distance on ground and roof will not be very high, therefore it is produced
Raw echo will cause echo interference, influence the test result of loudspeaker.
It, can not be in floor since the floor of normal room is arranged if tested speaker is mounted on the ground of screened room
On dig a hole, thus cause construction difficulty, and install loudspeaker when cause the insufficient defect of airtight space.
Summary of the invention
Against the above deficiency, the invention proposes a kind of checkout area of loudspeaker sound and test methods, are suitable for one kind
The completely new loudspeaker test environmental requirement being easy to implement, just can be carried out loudspeaker test without the high very high room of layer, environment is wanted
Ask also very low, low cost.The solution is particularly suitable for room upstairs.
Technical scheme is as follows:
A kind of checkout area of loudspeaker sound, the checkout area are transformed for a normal room, including one closed
Space, is Stilt layer between the confined space and overhead room, and the confined space center of top opens up a round survey
Prospect hole installs test panel, the fixture of the test panel setting installation loudspeaker, the plate face of the test panel on instrument connection
It is overlapped, is fixed on by lifting device at the top of the ceiling in room, the instrument connection surrounding with the top levels of confined space
Soft polymer material is installed, is completely closed environment for test panel and instrument connection formation；In the Stilt layer, lifting device
Surrounding four blocks of asbestos boards are set, form a rectangular-shape sound-absorbing space, it is described in confined space, immediately below test panel
Microphone for receiving sound, the microphone connecting test control module are set.
Above-mentioned lifting device is apparatus for automatically lifting, elevator, upper limit sensing device including fixed test panel, under
Limit induction device and PLC, the elevator, upper limit sensing device, lower limit sensing device are connected to PLC, pass through
PLC is controlled, and the elevator is mounted at the top of Stilt layer, and the upper limit sensing device is mounted on the top of confined space,
The lower limit sensing device is mounted on the side of confined space.
The distance d of above-mentioned test panel portion to microphone is 1m.
The setting for the time window that above-mentioned testing control module setting microphone receives sound is adjustable, for being used for
Filter the reflected sound in environment.
A kind of loudspeaker sound testing method, by pre-installing test software in testing control module, test software is behaved
Machine interactive interface controls loudspeaker sound test software, and product to be measured is mounted on to the survey of above-mentioned checkout area by fixture first
Try on panel, the position that is overlapped with confined space top levels of test panel debugging instrument connection, make loudspeaker itself sounding and
Other environmental noises carry out isolation processing, place the microphone for receiving sound below test panel face, are then surveyed by system
Software is tried to control the corresponding steps of loudspeaker sound test；
Described method includes following steps:
1) tested speaker is placed in the checkout area of loudspeaker sound test and is fixed on fixture；Tested loudspeaking
Device is connected to the output end of test device；
2) test software issues test signal to loudspeaker, and the received speaker sound signal of microphone is carried out at software
Reason, obtains the frequency response curve of loudspeaker；
3) human-computer interaction interface of test software is operated, it is microphone is received, treated by audio frequency processing circuit
Compared with the audio signal data of loudspeaker sound is measured with the audio signal data of system test software standard voice；
4) the correct frequency response curve of loudspeaker is obtained, for further studying.
Advantageous effects of the invention:
1, test horn is mounted at the top of ceiling, has blocked the diffraction of sound using roof and metope well.
2, very high space is not needed, generally in order to which clean removal is reflected, is placed on if being measured on metope, needs
4-5 meters or so of layer is high, and loudspeaker are placed on the height higher than 2 meters.
3, loudspeaker measurement is not necessarily required in addition make baffle, can use former furred ceiling as baffle.
The checkout area of loudspeaker sound proposed by the invention, the sound wave that can thoroughly radiate loudspeaker unit backward every
From the sound field that so that it will not influence to have immediately ahead of loudspeaker unit, it is ensured that the accuracy of measured result.This test simultaneously
Field structure setting rationally, has reformed intrinsic tactic pattern in the prior art, solving can not solve always for a long time
Installation problem, have a good application prospect.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of present invention shielding field；
Fig. 2 is the work flow diagram of apparatus for automatically lifting.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following embodiment is only used for clearly illustrating the present invention
Technical solution, and not intended to limit the protection scope of the present invention.
As shown in Figure 1, a kind of checkout area of loudspeaker sound, checkout area is transformed for a normal room, including one
A confined space 2, is Stilt layer 1 between confined space 2 and overhead room, and 2 center of top of confined space opens up a circle
Instrument connection 3 installs test panel 4, the fixture of the setting installation loudspeaker of test panel 4, the plate face of test panel 4 on instrument connection 3
It is overlapped, is fixed on by lifting device at the top of the ceiling in room with the horizontal plane at 2 top of confined space, 3 surrounding of instrument connection peace
Soft polymer material 6 is filled, is completely closed environment for test panel 4 and the formation of instrument connection 2；In Stilt layer 1, lifting device
Four blocks of asbestos boards 10 are arranged in surrounding, form a rectangular-shape sound-absorbing space 7, in confined space 2, immediately below test panel 4
Microphone 11 for receiving sound, 11 connecting test control module 13 of microphone are set.
The distance d of above-mentioned test panel 4 to microphone 11 is 1m.Since loudspeaker can be from after 4 sounding of test panel
Ground launch sound is to loudspeaker, and according to the speed of sound transmission, testing control module 13 is arranged microphone 11 and receives sound
Time is 6ms, just stops receiving after 6ms.
Lifting device is that apparatus for automatically lifting includes the elevator 5 of fixed test panel, upper limit sensing device 8, lower limit
Position sensing device 9 and PLC12, elevator 5, upper limit sensing device 8, lower limit sensing device 9 are connected to PLC12, lead to
PLC12 is crossed to control, elevator 5 is mounted on 1 top of Stilt layer, and upper limit sensing device 8 is mounted on the top of confined space 2,
Lower limit sensing device 9 is mounted on the side of confined space 2.
As shown in Fig. 2, the course of work of apparatus for automatically lifting is as follows:
1, rotate forward elevator 5 by PLC12, test panel 4 rises, and reaches at upper limit sensing device 8, triggering induction
Device makes elevator 5 stop working, and test panel 4 stops rising.
2, invert elevator 5 by PLC12, test panel 4 declines, and reaches at lower limit sensing device 9, triggering induction
Device makes elevator 5 stop working, and test panel 4 stops decline.
A kind of loudspeaker sound testing method, by pre-installing test software in testing control module 13, test software is
Human-computer interaction interface controls loudspeaker sound test software, and product to be measured is mounted on to the test surfaces of checkout area by fixture first
On plate 4, the position that the debugging of test panel 4 is overlapped to instrument connection 3 with 2 top levels of confined space makes loudspeaker itself sounding
Isolation processing is carried out with other environmental noises, the microphone 11 for receiving sound is placed below 4 face of test panel, then by being
System test software come control loudspeaker sound test corresponding steps；
Described method includes following steps:
1) tested speaker is placed in the checkout area of loudspeaker sound test and is fixed on fixture；Tested loudspeaking
Device is connected to the output end of test device；
2) test software issues test signal to loudspeaker, and the received speaker sound signal of microphone is carried out at software
Reason, obtains the frequency response curve of loudspeaker；
3) operate test software human-computer interaction interface, microphone 11 is received, by audio frequency processing circuit processing after
Loudspeaker sound audio signal data be measured with the audio signal data of system test software standard voice compared with；
4) the correct frequency response curve of loudspeaker is obtained, for further studying.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (5)
1. a kind of checkout area of loudspeaker sound, it is characterised in that: the checkout area is transformed for a normal room, including
One confined space, is Stilt layer between the confined space and overhead room, and the confined space center of top opens up one
A circle instrument connection installs test panel, the fixture of the test panel setting installation loudspeaker, the test surfaces on instrument connection
The horizontal plane of the top horizontal of the plate face and confined space of plate is overlapped, and is fixed at the top of the ceiling in room by lifting device,
The instrument connection surrounding installs soft polymer material, is completely closed environment for test panel and instrument connection formation；The frame
In dead level, four blocks of asbestos boards are arranged in the surrounding of lifting device, a rectangular-shape sound-absorbing space are formed, in the confined space
It is interior, the microphone for receiving sound, the microphone connecting test control module are set immediately below test panel.
2. a kind of checkout area of loudspeaker sound according to claim 1, it is characterised in that: the lifting device is automatic
Lifting device, elevator, upper limit sensing device, lower limit sensing device and PLC including fixed test panel, the liter
Drop machine, upper limit sensing device, lower limit sensing device are connected to PLC, are controlled by PLC, and the elevator is mounted on
At the top of Stilt layer, the upper limit sensing device is mounted on the top of confined space, and the lower limit sensing device is mounted on close
Close the side in space.
3. a kind of checkout area of loudspeaker sound according to claim 1, it is characterised in that: the test panel to Mike
The distance d of wind is 1m.
4. a kind of checkout area of loudspeaker sound according to claim 1, it is characterised in that: the testing control module is set
The setting that microphone receives the time window of sound is adjustable, for filtering out the reflected sound in environment.
5. a kind of loudspeaker sound testing method, it is characterised in that: by pre-installing test software in testing control module, test
Software is that human-computer interaction interface controls loudspeaker sound test software, and product to be measured is mounted on claim by fixture first
On the test panel of checkout area described in 1, the position that test panel debugging instrument connection is overlapped with confined space top levels makes
Loudspeaker itself sounding and other environmental noises carry out isolation processing, place the Mike for receiving sound below test panel face
Then wind is controlled the corresponding steps of loudspeaker sound test by system test software；
Described method includes following steps:
1) tested speaker is placed in the checkout area of loudspeaker sound test and is fixed on fixture；Tested speaker connects
It is connected to the output end of test device；
2) test software issues test signal to loudspeaker, and the received speaker sound signal of microphone is carried out software processing, choosing
Suitable time window is selected, the frequency response curve for filtering out the loudspeaker of Ambient sound is obtained；
3) human-computer interaction interface of test software is operated, it is microphone is received, pass through audio frequency processing circuit treated loudspeaking
Compared with the audio signal data of device sound is measured with the audio signal data of system test software standard voice；
4) the correct frequency response curve of loudspeaker is obtained, for further studying.
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| CN201611048500.8A CN106454680B (en) | 2016-11-23 | 2016-11-23 | The checkout area and test method of loudspeaker sound |
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| CN106454680B true CN106454680B (en) | 2019-05-03 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107896359A (en) * | 2017-11-15 | 2018-04-10 | 上海昶音通讯科技有限公司 | A kind of Mobile phone horn loudness method for fast measuring based on sound pressure meter |
| CN109979427A (en) * | 2017-12-28 | 2019-07-05 | 东莞迪芬尼电声科技有限公司 | The system and method for detection of sound |
| CN110374217B (en) * | 2019-07-23 | 2021-11-02 | 京东方科技集团股份有限公司 | Interactive testing device and system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201372493Y (en) * | 2008-11-14 | 2009-12-30 | 富港电子（东莞）有限公司 | Anechoic chamber |
| CN102547547A (en) * | 2012-03-02 | 2012-07-04 | 歌尔声学股份有限公司 | Microphone test tool, test system and test method |
| CN103634730A (en) * | 2012-08-20 | 2014-03-12 | 上海斐讯数据通信技术有限公司 | Audio parameter automatic adjustment system and method used for mobile terminal assembling line |
| CN203966545U (en) * | 2014-07-04 | 2014-11-26 | 刘兴平 | Silencer box for equipment audio detection |
| CN204119468U (en) * | 2014-09-07 | 2015-01-21 | 歌尔声学股份有限公司 | The testing apparatus of a kind of sound proof box and this sound proof box of application |
| CN205232454U (en) * | 2015-12-01 | 2016-05-11 | 珠海市精实测控技术有限公司 | Many sound fields acoustics shielded cell |
| US9686609B1 (en) * | 2013-06-28 | 2017-06-20 | Avnera Corporation | Low power synchronous data interface |
-
2016
- 2016-11-23 CN CN201611048500.8A patent/CN106454680B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201372493Y (en) * | 2008-11-14 | 2009-12-30 | 富港电子（东莞）有限公司 | Anechoic chamber |
| CN102547547A (en) * | 2012-03-02 | 2012-07-04 | 歌尔声学股份有限公司 | Microphone test tool, test system and test method |
| CN103634730A (en) * | 2012-08-20 | 2014-03-12 | 上海斐讯数据通信技术有限公司 | Audio parameter automatic adjustment system and method used for mobile terminal assembling line |
| US9686609B1 (en) * | 2013-06-28 | 2017-06-20 | Avnera Corporation | Low power synchronous data interface |
| CN203966545U (en) * | 2014-07-04 | 2014-11-26 | 刘兴平 | Silencer box for equipment audio detection |
| CN204119468U (en) * | 2014-09-07 | 2015-01-21 | 歌尔声学股份有限公司 | The testing apparatus of a kind of sound proof box and this sound proof box of application |
| CN205232454U (en) * | 2015-12-01 | 2016-05-11 | 珠海市精实测控技术有限公司 | Many sound fields acoustics shielded cell |
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