CN107509154A - A kind of method of testing, test device and the system of the head frequency response of civil miaow - Google Patents
A kind of method of testing, test device and the system of the head frequency response of civil miaow Download PDFInfo
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- CN107509154A CN107509154A CN201710790300.8A CN201710790300A CN107509154A CN 107509154 A CN107509154 A CN 107509154A CN 201710790300 A CN201710790300 A CN 201710790300A CN 107509154 A CN107509154 A CN 107509154A
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- frequency response
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- test
- miaow head
- microphone
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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
- H04R29/004—Monitoring arrangements; Testing arrangements for microphones
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- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
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- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
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- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The invention discloses a kind of method of testing of civil miaow head frequency response, wherein, including：Parameter initialization；Frequency response test is carried out to professional microphone, obtains first frequency response message of the professional microphone within the testing time；Frequency response test is carried out to civil miaow head to be measured, obtains second frequency response message of the civil miaow head to be measured within the testing time；Export the first frequency response message and the second frequency response message.The invention also discloses a kind of test device and test system of the head frequency response of civil miaow.The method of testing of civil miaow head frequency response provided by the invention has simple testing process, the high advantage of test result accuracy, the frequency response curve difference of civil miaow head and professional microphone can quickly be provided, improve miaow head performance for engineer and direction is provided, improve operating efficiency.
Description
Technical field
The present invention relates to acoustical testing technical field, more particularly to a kind of method of testing of civil miaow head frequency response,
A kind of test system of the test device of civil miaow head frequency response and test device including the civil miaow head frequency response
System.
Background technology
Civil miaow head is also known as microphone or sound pick-up, has small volume, cost low etc. relative to technical grade microphone excellent
Point.Engineer can also make the performance of civil miaow head close to professional by designing the preamplifier to match with miaow head
Microphone, therefore be widely used in the test of general acoustic enviroment.
In the design process, it is necessary to carry out frequency response survey after engineer combines miaow head with different preamplifiers
Examination, to judge whether its frequency response range reaches design requirement, but carries out the method ratio of frequency response test to it at present
It is cumbersome, influence operating efficiency.
Therefore, how the simple and efficient frequency response to miaow head carries out test is asked as technology urgently to be resolved hurrily
Topic.
The content of the invention
It is contemplated that at least solves one of technical problem present in prior art, there is provided a kind of civil miaow head frequency
The method of testing of response, a kind of test device of civil miaow head frequency response and the survey for including the civil miaow head frequency response
The test system that trial assembly is put, to solve the problems of the prior art.
As the first aspect of the invention, there is provided a kind of method of testing of civil miaow head frequency response, wherein, test
Loudspeaker can send noise primary signal after measuring sound source is received, and professional microphone and civil miaow head to be measured can be adopted
Collect the noise primary signal, the method for testing includes：
Parameter initialization, wherein the parameter includes general parameters and test parameter, the general parameters includes test name, surveyed
Try date and tester, test parameter include sample frequency, sensitivity of microphone, measuring sound source type, measuring sound source amplitude,
Measuring sound source frequency bandwidth and testing time；
Frequency response test is carried out to professional microphone, obtains first frequency of the professional microphone within the testing time
Response message, including：
Measuring sound source is sent according to the measuring sound source type；
Gather the noise primary signal that professional microphone collects；
Read the noise primary signal；
The noise primary signal is handled to obtain the first frequency response message of professional microphone；
The first frequency response message of the professional microphone is shown；
Record first frequency response message of the professional microphone within the testing time；
Frequency response test is carried out to civil miaow head to be measured, obtains second of civil miaow head to be measured within the testing time
Frequency response information, including：
Measuring sound source is sent according to the measuring sound source type；
Gather the noise primary signal that civil miaow head to be measured collects；
Read the noise primary signal；
The noise primary signal is handled to obtain the second frequency response message of civil miaow head to be measured；
The second frequency response message of the civil miaow head to be measured is shown；
Measuring sound source is sent according to the measuring sound source type；
Record second frequency response message of the civil miaow head to be measured within the testing time；
Export the first frequency response message and the second frequency response message.
Preferably, it is described that frequency response test is carried out to professional microphone, professional microphone is obtained in the test
First frequency response message in time is additionally included in the noise primary signal step that the professional microphone of collection collects
Preceding progress：
Sensitivity calibration is carried out to professional microphone by Microphone calibration instrument.
Preferably, it is described that frequency response test is carried out to civil miaow head to be measured, civil miaow head to be measured is obtained described
Second frequency response message in testing time is additionally included in the original letter of noise that the collection civil miaow head to be measured collects
Carried out before number step：
Sensitivity calibration is carried out to civil miaow head to be measured by Microphone calibration instrument.
Preferably, the measuring sound source type includes pink noise or frequency sweep noise.
As the second aspect of the invention, there is provided a kind of test device of civil miaow head frequency response, wherein, test
Loudspeaker can send noise primary signal after measuring sound source is received, and professional microphone and civil miaow head to be measured can be adopted
Collect the noise primary signal, the test device includes：
Initialization module, the initialization module are used for parameter initialization, wherein the parameter includes general parameters and test is joined
Number, the general parameters include test name, testDate and tester, and test parameter includes sample frequency, microphone spirit
Sensitivity, measuring sound source type, measuring sound source amplitude, measuring sound source frequency bandwidth and testing time；
The frequency response test module of professional microphone, the frequency response test module of the professional microphone are used for special
Industry level microphone carries out frequency response test, obtains first frequency response letter of the professional microphone within the testing time
Breath, including：
First measuring sound source issue unit, the first measuring sound source issue unit are used to be sent according to the measuring sound source type
Measuring sound source；
First data acquisition unit, the collecting unit are used to gather the noise primary signal that professional microphone collects；
First data-reading unit, the data-reading unit are used to read the noise primary signal；
First data processing unit, the data processing unit are used to the noise primary signal is handled to obtain professional
The first frequency response message of microphone；
First display unit, the display unit are used to show the first frequency response message of the professional microphone
Show；
First recording unit, the recording unit are used to record first frequency of the professional microphone within the testing time
Rate response message；
The frequency response test module of civil miaow head to be measured, the frequency response test module of the civil miaow head to be measured are used for
Frequency response test is carried out to civil miaow head to be measured, obtains second frequency of the civil miaow head to be measured within the testing time
Response message, including：
Second measuring sound source issue unit, the second measuring sound source issue unit are used to be sent according to the measuring sound source type
Measuring sound source；
Second data acquisition unit, second data acquisition unit are used to gather the noise original that civil miaow head to be measured collects
Beginning signal；
Second data-reading unit, second data-reading unit are used to read the noise primary signal；
Second data processing unit, second data processing unit are used to handle the noise primary signal to be treated
Survey the second frequency response message of civil miaow head；
Second display unit, second display unit are used to enter the second frequency response message of the civil miaow head to be measured
Row display；
Second recording unit, second recording unit are used to record the civil miaow head to be measured within the testing time
Second frequency response message；
Output module, the output module are used to export the first frequency response message and the second frequency response message.
Preferably, the frequency response test module of the professional microphone also includes：
First microphone calibration unit, first microphone calibration unit are used for by Microphone calibration instrument to professional Mike
Wind carries out sensitivity calibration.
Preferably, the frequency response test module of the civil miaow head to be measured also includes：
Second microphone alignment unit, the second microphone alignment unit are used for by Microphone calibration instrument to civil to be measured
Miaow head carries out sensitivity calibration.
As the third aspect of the invention, there is provided a kind of test system of civil miaow head frequency response, wherein, it is described
Test system includes the test device, dynamic signal acquisition equipment, power amplification of previously described civil miaow head frequency response
Device, test horn, power module, test pipeline, professional microphone, BNC data wires and civil miaow head to be measured,
The test device of the civil miaow head frequency response is connected by USB data line with the dynamic signal acquisition equipment,
The audio that the audio output of the test device of the civil miaow head frequency response passes through tone frequency channel wire and the power amplifier
Input is connected, and the audio output of the power amplifier is connected by tone frequency channel wire with the test horn, the power supply mould
Block is connected with the power input of the power amplifier, and one end of the test pipeline is connected with the test horn, described
Professional microphone/civil to be measured miaow head is positioned at the other end of the test pipeline, the professional microphone/to be measured civilian
Level miaow head is connected by the BNC data wires with the simulation input interface of the dynamic signal acquisition equipment.
Preferably, the test system also includes human-computer interaction interface, preamplifier and preamplifier power supply module,
The human-computer interaction interface is connected with the test device of the civil miaow head frequency response, for showing first frequency
Rate response message and/or the second frequency response message,
The preamplifier is connected with the civil miaow head to be measured, and the output end of the preamplifier is BNC connector, is used
It is connected in the simulation input interface with the dynamic signal acquisition equipment,
The preamplifier power supply module is connected with the power input of the preamplifier, the preamplifier power supply
Module is used to provide working power to the preamplifier.
The method of testing of civil miaow head frequency response provided by the invention, by using same device to professional Mike
Wind carries out frequency response test and carries out frequency response test to civil miaow head to be measured, after the result output that test is obtained
Contrasted, it can be seen that the difference of civil miaow head to be measured and the frequency response curve of professional microphone, so as to be engineering
Shi Gaishan miaow heads performance provides direction, and method of testing test is simple and efficient, improves operating efficiency.
Brief description of the drawings
Accompanying drawing is for providing a further understanding of the present invention, and a part for constitution instruction, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the flow chart of the method for testing of civil miaow head frequency response provided by the invention.
Fig. 2 is the structural representation of the test device of civil miaow head frequency response provided by the invention.
Fig. 3 is the structural representation of the test system of civil miaow head frequency response provided by the invention.
Fig. 4 is the hardware connection diagram of the test system of civil miaow head frequency response provided by the invention.
Fig. 5 is the connection diagram of civil miaow head to be measured provided by the invention and preamplifier.
Fig. 6 is frequency response test flow chart provided by the invention.
Fig. 7 is professional microphone provided by the invention and the result figure of the frequency response test of civil miaow head.
Embodiment
The embodiment of the present invention is described in detail below in conjunction with accompanying drawing.It should be appreciated that this place is retouched
The embodiment stated is merely to illustrate and explain the present invention, and is not intended to limit the invention.
As the first aspect of the invention, there is provided a kind of method of testing of civil miaow head frequency response, wherein, test
Loudspeaker can send noise primary signal after measuring sound source is received, and professional microphone and civil miaow head to be measured can be adopted
Collect the noise primary signal, as shown in figure 1, the method for testing includes：
S110, parameter initialization, wherein the parameter includes general parameters and test parameter, the general parameters includes test name
Claim, testDate and tester, test parameter include sample frequency, sensitivity of microphone, measuring sound source type, measuring sound source
Amplitude, measuring sound source frequency bandwidth and testing time；
S120, frequency response test is carried out to professional microphone, obtain the of professional microphone within the testing time
One frequency response information, including：
S121, measuring sound source sent according to the measuring sound source type；
The noise primary signal that S122, the professional microphone of collection collect；
S123, read the noise primary signal；
S124, the noise primary signal is handled to obtain the first frequency response message of professional microphone；
S125, the first frequency response message to the professional microphone are shown；
S126, record first frequency response message of the professional microphone within the testing time；
S130, frequency response test is carried out to civil miaow head to be measured, obtain civil miaow head to be measured within the testing time
Second frequency response message, including：
S131, the measuring sound source sent according to the measuring sound source type；
The noise primary signal that S132, collection civil miaow head to be measured collect；
S133, read the noise primary signal；
S134, the noise primary signal is handled to obtain the second frequency response message of civil miaow head to be measured；
S135, the second frequency response message to the civil miaow head to be measured are shown；
S136, record second frequency response message of the civil miaow head to be measured within the testing time；
S140, export the first frequency response message and the second frequency response message.
The method of testing of civil miaow head frequency response provided by the invention, by using same device to professional Mike
Wind carries out frequency response test and carries out frequency response test to civil miaow head to be measured, after the result output that test is obtained
Contrasted, it can be seen that the difference of civil miaow head to be measured and the frequency response curve of professional microphone, so as to be engineering
Shi Gaishan miaow heads performance provides direction, and method of testing test is simple and efficient, improves operating efficiency.
Specifically, some professional microphones for needing to carry out sensitivity calibration are calibrated in order to realize, it is described right
Professional microphone carries out frequency response test, obtains first frequency response letter of the professional microphone within the testing time
Breath is additionally included in what is carried out before the noise primary signal step that the professional microphone of the collection collects：
Sensitivity calibration is carried out to professional microphone by Microphone calibration instrument.
Specifically, some civil miaow heads to be measured for needing to carry out sensitivity calibration are calibrated in order to realize, it is described
Frequency response test is carried out to civil miaow head to be measured, obtains second frequency of the civil miaow head to be measured within the testing time
Response message is additionally included in what is carried out before the noise primary signal step that collection civil miaow head to be measured collects：
Sensitivity calibration is carried out to civil miaow head to be measured by Microphone calibration instrument.
Preferably, the measuring sound source type includes pink noise or frequency sweep noise.
It is understood that the Mike of the sensitivity of microphone of the civil miaow head to be measured and the professional microphone
Wind sensitivity is different.
It should be noted that what professional microphone and civil miaow head to be measured collected is the original letter of same noise
Number, when carrying out frequency response test to professional microphone and to civil miaow head to be measured, professional microphone is gathered respectively
The noise primary signal that the noise primary signal and collection civil miaow head to be measured collected collects.
As the second aspect of the invention, there is provided a kind of test device of civil miaow head frequency response, wherein, test
Loudspeaker can send noise primary signal after measuring sound source is received, and professional microphone and civil miaow head to be measured can be adopted
Collect the noise primary signal, as shown in Fig. 2 the test device 10 includes：
Initialization module 110, the initialization module 110 are used for parameter initialization, wherein the parameter include general parameters and
Test parameter, the general parameters include test name, testDate and tester, and test parameter includes sample frequency, wheat
Gram wind sensitivity, measuring sound source type, measuring sound source amplitude, measuring sound source frequency bandwidth and testing time；
The frequency response test module 120 of professional microphone, the frequency response test module 120 of the professional microphone are used
In carrying out frequency response test to professional microphone, obtain first frequency of the professional microphone within the testing time and ring
Information is answered, including：
First measuring sound source issue unit 121, the issue unit of the first measuring sound source 121 are used for according to the measuring sound source class
Type sends measuring sound source；
First data acquisition unit 122, the collecting unit 122 are used to gather the original letter of noise that professional microphone collects
Number；
First data-reading unit 123, the data-reading unit 123 are used to read the noise primary signal；
First data processing unit 124, the data processing unit 124 are used to the noise primary signal is handled to obtain
The first frequency response message of professional microphone；
First display unit 125, the display unit 125 are used to enter the first frequency response message of the professional microphone
Row display；
First recording unit 126, the recording unit 126 are used to record the professional microphone within the testing time
First frequency response message；
The frequency response test module 130 of civil miaow head to be measured, the frequency response test module of the civil miaow head to be measured
130 are used to carry out frequency response test to civil miaow head to be measured, obtain civil miaow head to be measured within the testing time
Second frequency response message, including：
Second measuring sound source issue unit 131, the second measuring sound source issue unit 131 are used for according to the measuring sound source class
Type sends measuring sound source；
Second data acquisition unit 132, second data acquisition unit 132 are used to gather what civil miaow head to be measured collected
The noise primary signal；
Second data-reading unit 133, second data-reading unit 133 are used to read the noise primary signal；
Second data processing unit 134, second data processing unit 134 are used to handle the noise primary signal
Obtain the second frequency response message of civil miaow head to be measured；
Second display unit 135, second display unit 135 are used to respond the second frequency of the civil miaow head to be measured
Information is shown；
Second recording unit 136, second recording unit 136 are used to record the civil miaow head to be measured in the test
Interior second frequency response message；
Output module 140, the output module 140 are used to export the first frequency response message and second frequency response
Information.
The test device of civil miaow head frequency response provided by the invention, by using same device to professional Mike
Wind carries out frequency response test and carries out frequency response test to civil miaow head to be measured, after the result output that test is obtained
Contrasted, it can be seen that the difference of civil miaow head to be measured and the frequency response curve of professional microphone, so as to be engineering
Shi Gaishan miaow heads performance provides direction, and method of testing test is simple and efficient, improves operating efficiency.
Specifically, the frequency response test module 120 of the professional microphone also includes：
First microphone calibration unit, first microphone calibration unit are used for by Microphone calibration instrument to professional Mike
Wind carries out sensitivity calibration.
Specifically, the frequency response test module 130 of the civil miaow head to be measured also includes：
Second microphone alignment unit, the second microphone alignment unit are used for by Microphone calibration instrument to civil to be measured
Miaow head carries out sensitivity calibration.
As the third aspect of the invention, there is provided a kind of test system of civil miaow head frequency response, wherein, such as scheme
Shown in 3, the test system 1 includes the test device 10 of previously described civil miaow head frequency response, dynamic signal acquisition
Equipment 11, power amplifier 12, test horn 13, power module 14, test pipeline 15, professional microphone 16, BNC data wires
17 and civil miaow to be measured first 18,
The test device 10 of the civil miaow head frequency response is connected by USB data line and the dynamic signal acquisition equipment 11
Connect, the audio output of the test device 10 of the civil miaow head frequency response passes through tone frequency channel wire and the power amplifier 12
Audio input end connection, the audio output of the power amplifier 12 is connected by tone frequency channel wire with the test horn 13,
The power module 14 is connected with the power input of the power amplifier 12, one end of the test pipeline 15 and the survey
Examination loudspeaker 13 connect, and the professional civil miaow first 18 to be measured of microphone 16/ is positioned at the other end of the test pipeline 15, institute
State professional microphone 16/ civil miaow first 18 to be measured and pass through the BNC data wires 17 and the dynamic signal acquisition equipment 12
Simulation input interface connection.
The test system of civil miaow head frequency response provided by the invention, by using civil miaow head frequency above
Response test device, the frequency response test to civil miaow head being realized, simple testing process, test result accuracy is high,
The frequency response curve difference of civil miaow head and professional microphone can be quickly provided, improving miaow head performance for engineer carries
For direction, operating efficiency is improved.
Preferably, the power module 14 is 12V portable power sources.
Preferably, the dynamic signal acquisition equipment 11 is NI USB-4431 dynamic signal acquisition equipment.
Specifically, for the voice signal for realizing human-computer interaction function and realization is sent to civil miaow first 18 to be measured
Enlarging function, the test system 1 also include human-computer interaction interface 19, preamplifier 20 and preamplifier power supply module
21,
The human-computer interaction interface 19 is connected with the test device 10 of the civil miaow head frequency response, for showing described
One frequency response information and/or the second frequency response message,
The preamplifier 20 is connected with the civil miaow first 18 to be measured, and the output end of the preamplifier 20 is BNC
Joint, for being connected with the simulation input interface of the dynamic signal acquisition equipment 12,
The preamplifier power supply module 21 is connected with the power input of the preamplifier 20, the preamplifier
Power supply module 21 is used to provide working power to the preamplifier 20.
It should be noted that the frequency response of professional microphone is tested in civil miaow head frequency response test device 10
First measuring sound source issue unit 121 of module 120 is surveyed with the second of the frequency response test module 130 of civil miaow head to be measured
Examination sound source issue unit 131 sends measuring sound source all in accordance with the measuring sound source type, wherein the first measuring sound source issue unit
121 send measuring sound source, and the second measuring sound source issue unit 131 sends measuring sound source, it should be appreciated that in order to realize to special
Industry level microphone and the detection of the performance of civil miaow head to be measured, the first measuring sound source issue unit 121 and described second
The measuring sound source that measuring sound source issue unit 131 is sent is identical, and the civil miaow head frequency response test device 10 passes through work(
Rate amplifier 12 is connected with test horn 13, therefore is sent out by the first measuring sound source issue unit 121 and the second measuring sound source
Go out measuring sound source that unit 131 is sent after power amplifier 12 is amplified, sent through the test horn 13, Ran Houzai
Collected by data acquisition unit 122.
The course of work of civil miaow head frequency response test system provided by the invention is entered with reference to Fig. 4 to Fig. 7
Row describes in detail.
Fig. 4 is civil miaow head frequency response test device and the connection diagram of other hardware, it is to be understood that institute
Stating civil miaow head frequency response test device can be located in notebook computer, therefore, the civil miaow head frequency response
Test device 10 is connected by USB data line with NI USB-4431 dynamic signal acquisitions equipment 11, and the audio of notebook computer is defeated
Go out end to be connected with the audio input end of power amplifier 12 by tone frequency channel wire.The audio output of power amplifier 12 passes through audio
Line is connected with test horn 13, and power module 14 is connected with the power input of power amplifier 12, is the power amplifier
12 power supplies.One end of test pipeline 15 is connected with test horn 13, and the other end of test pipeline 15 places professional microphone 16,
Professional microphone 7 passes through BNC data wires 17 and the simulation input No.1 interface of NI USB-4431 dynamic signal acquisitions equipment 11
Connection.
It is understood that when carrying out frequency response test to civil miaow to be measured first 18, the civil miaow to be measured
First 18 are connected by BNC data wires 17 with the simulation input No.1 interface of NI USB-4431 dynamic signal acquisitions equipment 11.
Fig. 5 is the connection diagram of the civil miaow first 18 to be measured and preamplifier 20, the civil miaow to be measured
First 18 signal output part is connected with the signal input part of designed preamplifier 20, wherein the signal of preamplifier 20
Output end is designed to BNC connector, is easy to after being replaced with professional microphone 16, is moved by BNC data wires 17 and NI USB-4431
The simulation input No.1 interface of state signal collecting device 11 is connected.The power output end of preamplifier power supply module 21 with it is preposition
The power input of amplifier 20 is connected, and ensures the normal work in test of preamplifier 20.It should be noted that described treat
Surveying the test position of civil miaow first 18 need to be consistent with the test position of professional microphone 16.
Fig. 6 is test flow chart, carries out frequency response test to professional microphone 16 first, after the completion of hardware layout,
Software operating procedure is as follows：
The first step：Parameter setting, including general parameters and test parameter are carried out in initialization module 110, general parameters includes surveying
Routine information, the test parameters such as examination title, testDate, tester include sample frequency, sensitivity of microphone, measuring sound source
Type（Such as pink noise or frequency sweep noise）, measuring sound source amplitude, measuring sound source frequency bandwidth, testing time；
Second step：Sensitivity calibration is carried out to professional microphone 16 by the first microphone calibration unit（If school is not needed
Standard, it can skip）, Sensitirity va1ue is automatically updated after calibration.Calibrating mode sends 1KHz, 94dB using Microphone calibration instrument
Voice signal is calibrated.
3rd step：Into data acquisition interface, at this moment the first data acquisition unit 122 is started working, and passes through the first data
Reading unit 123 reads noise primary signal, and the first data processing unit 124 is handled noise primary signal, and at
Result after reason is reached on human-computer interaction interface 19 by the first display unit 125.Engineer is so as in human-computer interaction interface
The first frequency response message that current professional microphone 16 collects is observed on 19.
4th step：The beginning testing button on human-computer interaction interface 19 is clicked, now notebook computer will by tone frequency channel wire
The information of pink noise or frequency sweep noise reaches power amplifier 12, and sends corresponding sound by test horn 13.Survey simultaneously
Try in software records following a period of time（Time span has been set in parameter setting）Frequency response information；
5th step：After test record, engineer removes professional microphone 16, and replaces with and designed be connected to preceding storing
The civil miaow to be measured first 18 of big device 20, ensures the position of civil miaow first 18 to be measured and the test position of professional microphone 16
Equally.
6th step：After the completion of hardware connection, repeatedly the step of first step ~ four step, notices that the test parameter of the first step removes
Outside sensitivity of microphone is different, remaining test parameter do not change.
7th step：After test record, if also the second Analysis of Nested Design it is good be connected to the to be measured civilian of preamplifier 20
Level miaow first 18, repeat five steps the step of, then read again the first step ~ four step the step of, carry out frequency response test.If no
Need to carry out frequency response test again, click on conclusion button and complete test, now civil miaow head frequency response test device meeting
Multiple frequency response test result is preserved to an Excel form, is easy to engineer's post analysis.
Fig. 7 is twice frequency response test result figure, by respectively to professional microphone 16 and civil miaow head to be measured
18 carry out frequency response test, and are placed in a chart and are analyzed, it can be clearly seen that both frequency response curves
Difference, provide direction so as to improve miaow head performance for engineer, raising operating efficiency.
It is understood that the principle that embodiment of above is intended to be merely illustrative of the present and the exemplary implementation that uses
Mode, but the invention is not limited in this.For those skilled in the art, the essence of the present invention is not being departed from
In the case of refreshing and essence, various changes and modifications can be made therein, and these variations and modifications are also considered as protection scope of the present invention.
Claims (9)
1. a kind of method of testing of civil miaow head frequency response, it is characterised in that test horn can receive test sound
Noise primary signal is sent behind source, professional microphone and civil miaow head to be measured can collect the noise primary signal, institute
Stating method of testing includes：
Parameter initialization, wherein the parameter includes general parameters and test parameter, the general parameters includes test name, surveyed
Try date and tester, test parameter include sample frequency, sensitivity of microphone, measuring sound source type, measuring sound source amplitude,
Measuring sound source frequency bandwidth and testing time；
Frequency response test is carried out to professional microphone, obtains first frequency of the professional microphone within the testing time
Response message, including：
Measuring sound source is sent according to the measuring sound source type；
Gather the noise primary signal that professional microphone collects；
Read the noise primary signal；
The noise primary signal is handled to obtain the first frequency response message of professional microphone；
The first frequency response message of the professional microphone is shown；
Record first frequency response message of the professional microphone within the testing time；
Frequency response test is carried out to civil miaow head to be measured, obtains second of civil miaow head to be measured within the testing time
Frequency response information, including：
The measuring sound source is sent according to the measuring sound source type；
Gather the noise primary signal that civil miaow head to be measured collects；
Read the noise primary signal；
The noise primary signal is handled to obtain the second frequency response message of civil miaow head to be measured；
The second frequency response message of the civil miaow head to be measured is shown；
Record second frequency response message of the civil miaow head to be measured within the testing time；
Export the first frequency response message and the second frequency response message.
2. method of testing according to claim 1, it is characterised in that described that frequency response survey is carried out to professional microphone
Examination, obtain first frequency response message of the professional microphone within the testing time and be additionally included in the professional wheat of collection
Carried out before the noise primary signal step that gram wind collects：
Sensitivity calibration is carried out to professional microphone by Microphone calibration instrument.
3. method of testing according to claim 1, it is characterised in that described that frequency response is carried out to civil miaow head to be measured
Test, obtain second frequency response message of the civil miaow head to be measured within the testing time be additionally included in it is described collection it is to be measured
Carried out before the noise primary signal step that civil miaow head collects：
Sensitivity calibration is carried out to civil miaow head to be measured by Microphone calibration instrument.
4. method of testing as claimed in any of claims 1 to 3, it is characterised in that the measuring sound source type bag
Include pink noise or frequency sweep noise.
5. a kind of test device of civil miaow head frequency response, it is characterised in that test horn can receive test sound
Noise primary signal is sent behind source, professional microphone and civil miaow head to be measured can collect the noise primary signal, institute
Stating test device includes：
Initialization module, the initialization module are used for parameter initialization, wherein the parameter includes general parameters and test is joined
Number, the general parameters include test name, testDate and tester, and test parameter includes sample frequency, microphone spirit
Sensitivity, measuring sound source type, measuring sound source amplitude, measuring sound source frequency bandwidth and testing time；
The frequency response test module of professional microphone, the frequency response test module of the professional microphone are used for special
Industry level microphone carries out frequency response test, obtains first frequency response letter of the professional microphone within the testing time
Breath, including：
First measuring sound source issue unit, the first measuring sound source issue unit are used to be sent according to the measuring sound source type
Measuring sound source；
First data acquisition unit, the collecting unit are used to gather the noise primary signal that professional microphone collects；
First data-reading unit, the data-reading unit are used to read the noise primary signal；
First data processing unit, the data processing unit are used to the noise primary signal is handled to obtain professional
The first frequency response message of microphone；
First display unit, the display unit are used to show the first frequency response message of the professional microphone
Show；
First recording unit, the recording unit are used to record first frequency of the professional microphone within the testing time
Rate response message；
The frequency response test module of civil miaow head to be measured, the frequency response test module of the civil miaow head to be measured are used for
Frequency response test is carried out to civil miaow head to be measured, obtains second frequency of the civil miaow head to be measured within the testing time
Response message, including：
Second measuring sound source issue unit, the second measuring sound source issue unit are used to be sent according to the measuring sound source type
Measuring sound source；
Second data acquisition unit, second data acquisition unit are used to gathering that civil miaow head to be measured to collect described makes an uproar
Sound primary signal；
Second data-reading unit, second data-reading unit are used to read the noise primary signal；
Second data processing unit, second data processing unit are used to handle the noise primary signal to be treated
Survey the second frequency response message of civil miaow head；
Second display unit, second display unit are used to enter the second frequency response message of the civil miaow head to be measured
Row display；
Second recording unit, second recording unit are used to record the civil miaow head to be measured within the testing time
Second frequency response message；
Output module, the output module are used to export the first frequency response message and the second frequency response message.
6. the test device of civil miaow head frequency response according to claim 5, it is characterised in that the professional wheat
The frequency response test module of gram wind also includes：
First microphone calibration unit, first microphone calibration unit are used for by Microphone calibration instrument to professional Mike
Wind carries out sensitivity calibration.
7. the test device of civil miaow head frequency response according to claim 5, it is characterised in that described to be measured civilian
The frequency response test module of level miaow head also includes：
Second microphone alignment unit, the second microphone alignment unit are used for by Microphone calibration instrument to civil to be measured
Miaow head carries out sensitivity calibration.
A kind of 8. test system of civil miaow head frequency response, it is characterised in that the test system include claim 5 to
The test device of civil miaow head frequency response in 7 described in any one, dynamic signal acquisition equipment, power amplifier, survey
Loudspeaker, power module, test pipeline, professional microphone, BNC data wires and civil miaow head to be measured are tried,
The test device of the civil miaow head frequency response is connected by USB data line with the dynamic signal acquisition equipment,
The audio that the audio output of the test device of the civil miaow head frequency response passes through tone frequency channel wire and the power amplifier
Input is connected, and the audio output of the power amplifier is connected by tone frequency channel wire with the test horn, the power supply mould
Block is connected with the power input of the power amplifier, and one end of the test pipeline is connected with the test horn, described
Professional microphone/civil to be measured miaow head is positioned at the other end of the test pipeline, the professional microphone/to be measured civilian
Level miaow head is connected by the BNC data wires with the simulation input interface of the dynamic signal acquisition equipment.
9. the test system of civil miaow head frequency response according to claim 8, it is characterised in that the test system
Also include human-computer interaction interface, preamplifier and preamplifier power supply module,
The human-computer interaction interface is connected with the test device of the civil miaow head frequency response, for showing first frequency
Rate response message and/or the second frequency response message,
The preamplifier is connected with the civil miaow head to be measured, and the output end of the preamplifier is BNC connector, is used
It is connected in the simulation input interface with the dynamic signal acquisition equipment,
The preamplifier power supply module is connected with the power input of the preamplifier, the preamplifier power supply
Module is used to provide working power to the preamplifier.
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| CN201710790300.8A CN107509154A (en) | 2017-09-05 | 2017-09-05 | A kind of method of testing, test device and the system of the head frequency response of civil miaow |
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