CN106454674A - Testing tooling - Google Patents
Testing tooling Download PDFInfo
- Publication number
- CN106454674A CN106454674A CN201610819207.0A CN201610819207A CN106454674A CN 106454674 A CN106454674 A CN 106454674A CN 201610819207 A CN201610819207 A CN 201610819207A CN 106454674 A CN106454674 A CN 106454674A
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- Prior art keywords
- signal
- earphone
- tested
- test
- artificial ear
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Classifications
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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
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The invention provides a testing tooling. The testing tooling comprises a testing baseplate, a signal processing module, an artificial ear and a standard microphone; an earphone to be tested is placed in the artificial ear; the earphone to be tested receives a sound signal sent by a sound card under the control of a testing computer; furthermore, the sound signal is sent through an earphone loudspeaker of the earphone to be tested; the artificial ear receives an external noise signal and the sound signal, and feeds back the obtained external noise signal and sound signal to the signal processing module; the standard microphone also synchronously transmits the external noise signal to the signal processing module; according to the sound signal and the external noise signal fed back by the artificial ear and the external noise signal fed back by the standard microphone, the signal processing module removes the external noise signal received by the artificial ear, and transmits the sound signal, in which the external noise signal is removed, to the testing computer; and therefore, an acoustic testing parameter of the earphone to be tested is obtained. By means of the testing tooling provided by the invention, performance testing of the earphone can be carried out in an open environment; and the testing tooling is high in efficiency and precision.
Description
Technical field
The present invention relates to technical field of acoustics, more specifically, is related to a kind of test work for carrying out performance test to earphone
Dress.
Background technology
With the extensive application of the portable type electronic products such as high-quality smart mobile phone, Pad, people are to can be with its fit applications
The parameters,acoustic of earphone require also more and more higher, the such as test to headphone acoustic parameter total harmonic distortion (THD), parametron
Control frequency range tends to low frequency, starts from 20Hz or starts to detect from 40Hz, the hi-res (High more having
Resolution Audio, is also called high parsing audio frequency) earphone, it is 5Hz to indicate performance starts frequency, as frequency is lower, its
Parameters,acoustic is easier to be affected by environment, causes curve abnormality, affects the confirming performance of product, is producing so as to be difficult to realize
Line is detected to each earphone.
At present, typically in dead room, earphone is tested, to ensure eliminating as much as ambient noise.But
It is that each earphone will carry out parameters,acoustic test, it is impossible to which each earphone all enters in dead room in actual production
Row test；In addition, many machines of people are many in producing line, environment noise is more much higher than dead room, tests in such a case, general logical
Cross interpolation silencer box to be tested, sound attenuator is closed chest, to be internally provided with the accepting devices such as silencing cotton and artificial ear, to the greatest extent
Possible simulation dead room environment, ensures that parameters,acoustic is not affected by ambient noise environment, it is ensured that test accuracy as far as possible.
Existing using closed sound attenuator completely cut off extraneous environmental noise, build closing noise reduction environment carry out acoustical behavior test
Theory diagram as shown in Figure 1.In test process, the performance test results this may result in the slight interference of casing inaccurate very
To test crash；Additionally, since it is desired that pass case of repeatedly unpacking, there is also the problems such as testing efficiency is low, and testing procedure is complicated, test
High cost, speed is slow.
Content of the invention
In view of the above problems, it is an object of the invention to provide a kind of test fixture, with solve current earphone testing efficiency low,
Test accuracy is poor, complex operation the problems such as.
A kind of test fixture is provided according to the present invention, including testing base plate, signal processing module, being arranged on test base plate
Artificial ear and standard microphone, earphone to be tested is placed on emulation in ear；Wherein, earphone to be tested is received by test computer control
The acoustical signal that sound card processed sends, and acoustical signal is sent by the earphone horn of earphone to be tested；Artificial ear receives the external world and makes an uproar
The acoustical signal that acoustical signal and earphone to be tested send, and acquired outside noise signal and earphone to be tested are sent
Acoustical signal feed back to signal processing module；Meanwhile, standard microphone picks up outside noise signal, and by outside noise signal
It is synchronously transmitted to signal processing module；Acoustical signal that signal processing module is fed back according to artificial ear and outside noise signal and
The outside noise signal of standard microphone feedback, removes the outside noise signal that artificial ear is received, and will remove outside noise
Acoustical signal after signal is transferred to test computer, obtains the acoustical testing parameter of earphone to be tested.
Furthermore it is preferred that scheme be that emulation in ear is provided with test mike, test mike is used for receiving the external world makes an uproar
The acoustical signal that acoustical signal and earphone to be tested send, and acquired outside noise signal and earphone to be tested are sent
Acoustical signal feed back to signal processing module.
Furthermore it is preferred that scheme be that the structure of artificial ear is adapted with the structure of earphone to be tested.
Furthermore it is preferred that scheme be, signal processing module be arranged on test base plate on；Or, signal processing module is arranged
Inside test computer.
Furthermore it is preferred that scheme be, between sound card and earphone to be tested arrange power amplifier, power amplifier use
In the acoustical signal for amplifying sound card output.
Furthermore it is preferred that scheme be to be provided with measuring amplifier, measuring and amplifying between artificial ear and signal processing module
Device is used for amplifying the acoustical signal that the outside noise signal of artificial ear pickup and earphone to be tested send.
Furthermore it is preferred that scheme be that acoustical testing parameter includes frequency response and/or harmonic distortion and/or phase place.
Furthermore it is preferred that scheme be that signal processing module includes dsp chip and the algorithm being stored in dsp chip.
Furthermore it is preferred that scheme be that artificial ear includes left artificial ear and right artificial ear, in left artificial ear and right artificial ear
Corresponding test mike is inside provided with.
Furthermore it is preferred that scheme be, test base plate on be vertically provided with support base, standard microphone is fixed on support base
On；Also, standard microphone is Wei Yu left artificial ear and right artificial ear between.
Using the above-mentioned test fixture according to the present invention, may apply in the larger production environment of noise, and need not
The accuracy of test can be ensured using sound attenuator, save testing cost；Simultaneously, it is to avoid existing test in unpack and close case behaviour
Make, effectively testing efficiency is lifted, save the testing time.
In order to realize above-mentioned and related purpose, one or more aspects of the present invention include the spy that will be explained in below
Levy.Description below and accompanying drawing are described in detail some illustrative aspects of the present invention.However, only indicating in terms of these
Being can be using some mode in the various modes of the principle of the present invention.Additionally, it is contemplated that including all these aspects with
And their equivalent.
Description of the drawings
By reference to the explanation below in conjunction with accompanying drawing, and with being more fully understood to the present invention, the present invention other
Purpose and result will be more apparent and should be readily appreciated that.In the accompanying drawings：
Fig. 1 is existing earphone performance test theory diagram；
Fig. 2 is the theory diagram of the test fixture according to the embodiment of the present invention；
Fig. 3 is the earphone test flow chart according to the embodiment of the present invention.
Identical label indicates similar or corresponding feature or function in all of the figs.
Specific embodiment
In the following description, for purposes of illustration, in order to provide the comprehensive understanding to one or more embodiments, explain
Many details are stated.It may be evident, however, that these embodiments can also be realized in the case of not having these details.
In other examples, for the ease of describing one or more embodiments, known structure and equipment are illustrated in block form an.
For describing the Headphone structure of the embodiment of the present invention in detail, below with reference to accompanying drawing, the earphone of the embodiment of the present invention is entered
Row is described in detail.
Fig. 2 shows the principle of test fixture according to embodiments of the present invention.
As shown in Fig. 2 the sound card that the test fixture of the embodiment of the present invention is connected with test computer and test computer is jointly complete
Become the test of earphone performance, wherein, test fixture include open test base plate (not shown), signal processing module,
The artificial ear being arranged on test base plate and standard microphone, earphone to be tested is placed on emulation in ear, to earphone to be tested
During being tested, directly corresponding emulation in ear is fixed on by spacing for earphone to be tested, then by testing computer control
Sound card processed sends acoustical signal, and acoustical signal is transferred to earphone to be tested, and earphone to be tested receives the acoustical signal and leads to
Cross internal earphone horn and send acoustical signal；As earphone to be tested is placed in artificial ear, artificial ear can receive the external world
The acoustical signal that noise signal and earphone to be tested send, and acquired outside noise signal and earphone to be tested are sent out
The acoustical signal for going out feeds back to signal processing module；At the same time, standard microphone also to external world noise signal be picked up, and
The outside noise signal for picking up is synchronously transmitted to signal processing module；The sound that signal processing module is fed back according to artificial ear
Signal and the outside noise signal of outside noise signal and standard microphone feedback, remove the outside noise that artificial ear is received
Signal, and the acoustical signal for removing after outside noise signal is transferred to test computer, obtain the acoustical testing of earphone to be tested
Parameter.
Specifically, the test fixture of the embodiment of the present invention, is provided with two artificial ears, the structure of artificial ear and ear to be tested
The structure of machine is adapted, and is provided with corresponding test mike in each emulation in ear, and test mike is made an uproar for receiving the external world
The acoustical signal that acoustical signal and earphone to be tested send, and acquired outside noise signal and earphone to be tested are sent
Acoustical signal feed back to signal processing module.
In a specific embodiment of the present invention, signal processing module can include DSP (digital signal
Processor, digital signal processor) chip and the algorithm that is stored in dsp chip etc., signal processing module can be arranged
It is connected on test base plate and with test computer, it is also possible to be set directly inside test computer, by signal processing module pair
Outside noise signal in the signal (including acoustical signal and outside noise signal) that artificial ear is received is eliminated, so as to true
Protect the acoustical signal for being transferred to test computer not disturbed by external environment, improve the accuracy of noise cancelling headphone detection.
Specifically, between sound card and earphone to be tested, power amplifier is additionally provided with, for amplifying the sound of sound card output
Message number；Measuring amplifier is provided between artificial ear and signal processing module, and the external world for amplifying artificial ear pickup makes an uproar
The acoustical signal that acoustical signal and earphone to be tested send.
As shown in Fig. 2 test computer drives sound card to send original acoustical signal, the acoustical signal is through power amplifier
Processing and amplifying after be transferred to earphone to be tested, earphone to be tested is received the acoustical signal after amplifying and is simultaneously sent out by its horn single body
Sound, in horn single body voiced process, acoustical signal and outside noise signal pass through air indirect transfer simultaneously to artificial ear,
And the test mike pickup of simulated in ear, test the outside noise signal of mike pickup and acoustical signal is measured puts
After the processing and amplifying of big device, signal processing module is transferred to.
In addition, measuring amplifier is also equipped between standard microphone and signal processing module, to earphone to be tested
When being detected, standard microphone is while pick up outside noise signal, the amplification of the measured amplifier of outside noise signal
After process, signal processing module is also transmitted to.Finally, signal processing module is according to the acoustical signal of the artificial ear feedback for receiving
With outside noise signal, and standard microphone feedback outside noise signal processed, so as to received to artificial ear
Outside noise signal is filtered, and is obtained final acoustical signal, and is transferred to test computer, by the survey that tests inside computer
Examination software obtains the acoustical testing parameter of earphone to be tested.Wherein, acoustical testing parameter includes frequency response and/or harmonic distortion
And/or the parameter such as phase place.
In another embodiment of the present invention, artificial ear includes left artificial ear and right artificial ear, in left emulation
Ear and right emulation in ear are provided with corresponding test mike, and test mike can receive the sound that earphone to be tested sends
Signal also can pick up outside noise signal simultaneously.Additionally, for guaranteeing to test outside noise signal and the mark that mike is received
The concordance of the outside noise signal that quasi- mike is received, can also be vertically provided with support base, standard on test base plate
Mike is fixed on support base；Also, standard microphone is Wei Yu left artificial ear and right artificial ear between.
Hereinafter the testing process of the test fixture to the embodiment of the present invention is described in detail.Wherein, Fig. 3 shows root
Earphone testing process according to the embodiment of the present invention.
As shown in figure 3, the earphone testing process of the embodiment of the present invention is comprised the following steps：
S310：Test computer control sound card sends acoustical signal, and acoustical signal is transferred to earphone to be tested, to be tested
Earphone receives the acoustical signal for being sent by test computer control sound card, and is sent by the earphone horn of earphone to be tested.
S320：Artificial ear is connect while receiving the sound letter that outside noise signal and earphone to be tested (horn single body) send
Number, and the acoustical signal that acquired outside noise signal and earphone to be tested are sent feeds back to signal processing module.
S330：While execution step S320, standard microphone picks up outside noise signal, and by outside noise signal
It is synchronously transmitted to signal processing module.
S340：Acoustical signal and outside noise signal and standard microphone that signal processing module is fed back according to artificial ear
The outside noise signal of feedback, removes the outside noise signal that artificial ear is received, and will remove the sound after outside noise signal
Message number is transferred to test computer, finally obtains the acoustical testing parameter of earphone to be tested.
The test fixture of present invention offer be can be seen that by above-mentioned embodiment, on the one hand, for open test work
Dress, can carry out monitor in real time by standard microphone to the noise signal in test environment, reach the essence under open environment
Quasi- test, and avoid the unpacking of closed test box and close the links such as case, effectively improve product test efficiency.On the other hand, mark
Quasi- mike applicable band haves a wide reach, in can applying to the production environment of factory, it is not necessary to definitely can be treated using sound attenuator
The test accuracy of test earphone, saves production cost, improve production efficiency.
Above with reference to accompanying drawing, the test fixture according to the present invention is described in an illustrative manner.But, those skilled in the art
It should be appreciated that the test fixture for being proposed for the invention described above, can also make on the basis of without departing from present invention
Various improvement.Therefore, protection scope of the present invention should be determined by the content of appending claims.
Claims (10)
1. a kind of test fixture, it is characterised in that including testing base plate, signal processing module, being arranged on the test base plate
Artificial ear and standard microphone, earphone to be tested is placed on the emulation in ear；Wherein,
The earphone to be tested receives the acoustical signal for being sent by test computer control sound card, and by the earphone to be tested
Earphone horn sends the acoustical signal；
The artificial ear receives the acoustical signal that outside noise signal and the earphone to be tested send, and will be acquired outer
The acoustical signal that boundary's noise signal and the earphone to be tested send feeds back to the signal processing module；Meanwhile,
The standard microphone picks up outside noise signal, and the outside noise signal is synchronously transmitted to the signal processing
Module；
Acoustical signal and outside noise signal and the standard wheat that the signal processing module is fed back according to the artificial ear
The outside noise signal of gram wind feedback, removes the outside noise signal that the artificial ear is received, and will remove outside noise letter
Acoustical signal after number is transferred to the test computer, obtains the acoustical testing parameter of the earphone to be tested.
2. test fixture as claimed in claim 1, it is characterised in that
The emulation in ear is provided with test mike, the test mike is used for receiving outside noise signal and described
The acoustical signal that earphone to be tested sends, and the sound that acquired outside noise signal and the earphone to be tested are sent
Signal feeds back to the signal processing module.
3. test fixture as claimed in claim 1, it is characterised in that
The structure of the artificial ear is adapted with the structure of the earphone to be tested.
4. test fixture as claimed in claim 1, it is characterised in that
The signal processing module is arranged on the test base plate；Or, the signal processing module is arranged on the test
Inside computer.
5. test fixture as claimed in claim 1, it is characterised in that
Power amplifier is set between the sound card and the earphone to be tested, and the power amplifier is described for amplifying
The acoustical signal of sound card output.
6. test fixture as claimed in claim 1, it is characterised in that
Measuring amplifier is provided between the artificial ear and the signal processing module, the measuring amplifier is used for amplifying
The acoustical signal that the outside noise signal of the artificial ear pickup and the earphone to be tested send.
7. test fixture as claimed in claim 1, it is characterised in that
The acoustical testing parameter includes frequency response and/or harmonic distortion and/or phase place.
8. test fixture as claimed in claim 1, it is characterised in that
The signal processing module includes dsp chip and the algorithm being stored in the dsp chip.
9. test fixture as claimed in claim 2, it is characterised in that
The artificial ear includes left artificial ear and right artificial ear, is provided with the left artificial ear and the right emulation in ear
Corresponding test mike.
10. test fixture as claimed in claim 9, it is characterised in that
Support base is vertically provided with the test base plate, the standard microphone is fixed on the support base；Also, institute
Standard microphone is stated Wei Yu the left artificial ear and the right artificial ear between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610819207.0A CN106454674A (en) | 2016-09-12 | 2016-09-12 | Testing tooling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610819207.0A CN106454674A (en) | 2016-09-12 | 2016-09-12 | Testing tooling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106454674A true CN106454674A (en) | 2017-02-22 |
Family
ID=58168034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201610819207.0A Pending CN106454674A (en) | 2016-09-12 | 2016-09-12 | Testing tooling |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106644057A (en) * | 2017-03-08 | 2017-05-10 | 深圳出入境检验检疫局玩具检测技术中心 | Speech toy noise tester and testing method thereof |
| CN107347176A (en) * | 2017-06-16 | 2017-11-14 | 广东工业大学 | A kind of earphone frequency sound test device |
| CN108401218A (en) * | 2018-03-01 | 2018-08-14 | 会听声学科技（北京）有限公司 | Active noise reduction earphone method for diagnosing faults |
| CN108430024A (en) * | 2018-02-28 | 2018-08-21 | 东莞市晨新电子科技有限公司 | A kind of measurement method of noise cancelling headphone |
| CN108712709A (en) * | 2018-08-15 | 2018-10-26 | 会听声学科技（北京）有限公司 | Noise cancelling headphone test device and system, its microphone trouble-shooter, system and method |
| CN109327788A (en) * | 2018-10-17 | 2019-02-12 | 杭州兆华电子有限公司 | A kind of WiFi speaker test macro and its test method |
| CN110278506A (en) * | 2019-06-19 | 2019-09-24 | 惠州联韵声学科技有限公司 | TWS bluetooth headset active noise reduction ears debug pair system and method automatically |
| CN110470935A (en) * | 2019-09-18 | 2019-11-19 | 广州小鹏汽车科技有限公司 | A kind of vehicle load measurement system, measurement method and vehicle |
| CN110720227A (en) * | 2017-04-12 | 2020-01-21 | 思睿逻辑国际半导体有限公司 | Testing multiple electroacoustic devices |
| CN112135235A (en) * | 2020-09-22 | 2020-12-25 | 歌尔科技有限公司 | Quality detection method, system and computer readable storage medium |
| CN112312296A (en) * | 2020-09-08 | 2021-02-02 | 深圳市逸音科技有限公司 | ANC earphone acoustic test system |
| CN113055806A (en) * | 2021-04-22 | 2021-06-29 | 东莞市声强电子有限公司 | Acoustic testing system of active noise reduction earphone |
| CN113068109A (en) * | 2021-03-26 | 2021-07-02 | 潍坊歌尔电子有限公司 | Horn testing mechanism |
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| CN103379412A (en) * | 2012-04-11 | 2013-10-30 | 苹果公司 | Audio device with a voice coil channel and a separately amplified telecoil channel |
| CN104376848A (en) * | 2013-08-12 | 2015-02-25 | 展讯通信（上海）有限公司 | Voice signal processing method and device |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106644057A (en) * | 2017-03-08 | 2017-05-10 | 深圳出入境检验检疫局玩具检测技术中心 | Speech toy noise tester and testing method thereof |
| CN110720227A (en) * | 2017-04-12 | 2020-01-21 | 思睿逻辑国际半导体有限公司 | Testing multiple electroacoustic devices |
| CN110720227B (en) * | 2017-04-12 | 2021-07-23 | 思睿逻辑国际半导体有限公司 | Apparatus and method for testing a plurality of electroacoustic devices |
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| CN108430024A (en) * | 2018-02-28 | 2018-08-21 | 东莞市晨新电子科技有限公司 | A kind of measurement method of noise cancelling headphone |
| CN108401218A (en) * | 2018-03-01 | 2018-08-14 | 会听声学科技（北京）有限公司 | Active noise reduction earphone method for diagnosing faults |
| CN108401218B (en) * | 2018-03-01 | 2020-10-30 | 会听声学科技（北京）有限公司 | Fault diagnosis method for active noise reduction earphone |
| CN108712709A (en) * | 2018-08-15 | 2018-10-26 | 会听声学科技（北京）有限公司 | Noise cancelling headphone test device and system, its microphone trouble-shooter, system and method |
| CN109327788A (en) * | 2018-10-17 | 2019-02-12 | 杭州兆华电子有限公司 | A kind of WiFi speaker test macro and its test method |
| CN110278506A (en) * | 2019-06-19 | 2019-09-24 | 惠州联韵声学科技有限公司 | TWS bluetooth headset active noise reduction ears debug pair system and method automatically |
| CN110278506B (en) * | 2019-06-19 | 2024-06-07 | 惠州联韵声学科技有限公司 | TWS Bluetooth headset active noise reduction double-ear automatic debugging pairing system and method |
| CN110470935A (en) * | 2019-09-18 | 2019-11-19 | 广州小鹏汽车科技有限公司 | A kind of vehicle load measurement system, measurement method and vehicle |
| CN110470935B (en) * | 2019-09-18 | 2022-03-18 | 广州小鹏汽车科技有限公司 | Vehicle-mounted measuring system, measuring method and vehicle |
| CN112312296A (en) * | 2020-09-08 | 2021-02-02 | 深圳市逸音科技有限公司 | ANC earphone acoustic test system |
| CN112312296B (en) * | 2020-09-08 | 2022-01-28 | 深圳市逸音科技有限公司 | ANC earphone acoustic test system |
| CN112135235A (en) * | 2020-09-22 | 2020-12-25 | 歌尔科技有限公司 | Quality detection method, system and computer readable storage medium |
| CN113068109A (en) * | 2021-03-26 | 2021-07-02 | 潍坊歌尔电子有限公司 | Horn testing mechanism |
| CN113055806A (en) * | 2021-04-22 | 2021-06-29 | 东莞市声强电子有限公司 | Acoustic testing system of active noise reduction earphone |
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