CN110536222A - The test device and method of audio frequency apparatus performance - Google Patents
The test device and method of audio frequency apparatus performance Download PDFInfo
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- CN110536222A CN110536222A CN201910698788.0A CN201910698788A CN110536222A CN 110536222 A CN110536222 A CN 110536222A CN 201910698788 A CN201910698788 A CN 201910698788A CN 110536222 A CN110536222 A CN 110536222A
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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
Abstract
The invention discloses the test devices and method of a kind of audio frequency apparatus performance, belong to audio-frequency test technical field.Device includes that at least one signal generates acquisition module and control analysis module, it includes generation unit and acquisition unit that signal, which generates acquisition module, acquisition unit has at least one input channel, the quantity of input channel and the quantity of the output channel of audio frequency apparatus to be measured match, generation unit is used for, the input terminal of output first object pumping signal to audio frequency apparatus to be measured；Acquisition unit is used for, and is treated survey audio frequency apparatus and is acquired in response to the output signal of first object pumping signal, the output signal in response to first object pumping signal includes the signal of at least one output channel；Control analysis module is used for, and control generation unit exports first object pumping signal, and the output signal in response to first object pumping signal based on acquisition calculates and export the first test result of the signal of each output channel.
Description
Technical field
The present invention relates to audio-frequency test technical field, in particular to a kind of the test device and method of audio frequency apparatus performance.
Background technique
Audio frequency apparatus is mainly the general name to audio input-output device comprising power amplifier, speaker, multimedia control
Platform, digital sound console, audio sample card, synthesizer, medium-high frequency speaker, microphone, the sound card in computer, earphone etc..With electricity
The level of integrated system of the high speed development of sub- technology, audio frequency apparatus is increasingly complicated.It is faced in the research and development of product and production link
Function and performance test be more intended to each index test fining, and test mode to automatic test require increasingly
It is high.
In the index test of current existing audio frequency apparatus: generally a variety of using signal source, oscillograph, spectrum analyzer etc.
Instrument and meter builds test environment, the test mode there are it is complicated for operation the problems such as.
Summary of the invention
The embodiment of the invention provides the test devices and method of a kind of audio frequency apparatus performance, can survey automatically after actuation
Examination is not necessarily to manpower intervention, operates relatively simple.The technical solution is as follows:
On the one hand, a kind of test device of audio frequency apparatus performance is provided, described device includes that at least one signal generates
Acquisition module and control analysis module, it includes generation unit and acquisition unit that the signal, which generates acquisition module, and the acquisition is single
Member has at least one input channel, the quantity phase of the quantity of the input channel and the output channel of audio frequency apparatus to be measured
Match,
The generation unit is used for, the input terminal of output first object pumping signal to the audio frequency apparatus to be measured；
The acquisition unit is used for, and the output to the audio frequency apparatus to be measured in response to the first object pumping signal is believed
It number is acquired, the output signal in response to the first object pumping signal includes the letter of at least one output channel
Number；
The control analysis module is used for, and is controlled the generation unit and is exported the first object pumping signal, based on adopting
The output signal in response to the first object pumping signal of collection, calculates and exports the signal of each output channel
The first test result.
Optionally, first test result includes whether waveform is distorted, and the control analysis module is used for,
Determine the point-by-point difference of neighbouring sample point amplitude；
Determine the maximum difference of neighbouring sample point amplitude difference in the signal of output channel when signal zero-crossing；
When the point-by-point difference of neighbouring sample point amplitude is greater than the maximum difference, wave distortion is determined.
Optionally, first test result further includes that frequency spectrum, frequency point monitoring result, power, signal-to-noise ratio and harmonic wave lose
At least one of true degree.
Optionally, the control analysis module includes controller, interface unit and computer, and the controller passes through described
Interface unit and the calculating mechatronics,
The controller is used for, and receives the first control instruction of the computer, is controlled based on first control instruction
The generation unit exports the first object pumping signal, based on described in acquisition in response to the first object pumping signal
Output signal, calculate and export the first test result of the signal of each output channel to the computer, described
One control instruction includes the frequency and amplitude of the first object pumping signal；
The computer is used for, and shows the first test result of the signal of each output channel.
Optionally, the generation unit is also used to, and the second target excitation signal of output is defeated to the audio frequency apparatus to be measured
Enter end；
The acquisition unit is also used to, to the audio frequency apparatus to be measured in response to the output of second target excitation signal
Signal is acquired, and the output signal in response to second target excitation signal includes the letter of at least one output channel
Number；
The control analysis module is also used to, and is controlled the generation unit and is exported second target excitation signal, is based on
The output signal in response to second target excitation signal of acquisition, calculates and exports the letter of each output channel
Number the second test result.
Optionally, the interface unit is serial port unit.
Optionally, the generation unit is digital analog converter.
Optionally, the acquisition unit is analog-digital converter.
Optionally, the audio frequency apparatus to be measured includes two output channels, and the acquisition unit is double-channel analog/digital conversion
Device.
On the other hand, a kind of test method of audio frequency apparatus performance is provided, which comprises
The input terminal of first object pumping signal to audio frequency apparatus to be measured is exported, the audio frequency apparatus to be measured includes at least one
A output channel；
Output signal to the audio frequency apparatus to be measured in response to the first object pumping signal is acquired, the sound
The output signal of first object pumping signal described in Ying Yu includes the signal of at least one output channel；
It is each described based on, in response to the output signal of the first object pumping signal, calculating and exporting described in acquisition
First test result of the signal of output channel.
Technical solution provided in an embodiment of the present invention has the benefit that exporting first object by generation unit swashs
The input terminal of signal to audio frequency apparatus to be measured is encouraged, audio frequency apparatus output response to be measured is believed in the output of first object pumping signal
Number, acquisition unit is acquired output signal, controls output signal of the analysis module based on acquisition, calculates and export each defeated
First test result of the signal in channel out tests automatically after entire test device starting, is not necessarily to manpower intervention, and operation is more simple
It is single.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is a kind of structural block diagram of the test device of audio frequency apparatus performance provided in an embodiment of the present invention；
Fig. 2 is the structural block diagram of control analysis module provided in an embodiment of the present invention；
Fig. 3 is a kind of flow chart of the test method of audio frequency apparatus performance provided in an embodiment of the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
Fig. 1 shows a kind of test device of audio frequency apparatus performance provided in an embodiment of the present invention.Referring to Fig. 1, the device
800 include that at least one signal generates acquisition module 11 and control analysis module 12.It includes generating that signal, which generates acquisition module 11,
Unit 111 and acquisition unit 112.Acquisition unit 112 has at least one input channel, the quantity of input channel and audio to be measured
The quantity of the output channel of equipment matches.Generation unit 111 is electrically connected with the input terminal of audio frequency apparatus to be measured, acquisition unit
112 are electrically connected with each output channel of audio frequency apparatus to be measured respectively, control analysis module 12 respectively with generation unit 111 and acquisition
Unit 112 is electrically connected.
Generation unit 111 is used for, the input terminal of output first object pumping signal to audio frequency apparatus to be measured.
Acquisition unit 112 is used for, and is treated survey audio frequency apparatus and is adopted in response to the output signal of first object pumping signal
Collection, the output signal in response to first object pumping signal includes the signal of at least one output channel.
Control analysis module 12 be used for, control generation unit export first object pumping signal, based on acquisition in response to
The output signal of first object pumping signal calculates and exports the first test result of the signal of each output channel.
In the present embodiment, the input terminal of first object pumping signal to audio frequency apparatus to be measured is exported by generation unit, to
Audio frequency apparatus output response is surveyed in the output signal of first object pumping signal, acquisition unit is acquired output signal, control
Output signal of the analysis module processed based on acquisition calculates and exports the first test result of the signal of each output channel, entirely
It is tested automatically after test device starting, is not necessarily to manpower intervention, operated relatively simple.
In addition, acquisition unit 112 may include multiple input channels, the audio frequency apparatus of multiple-channel output can be surveyed
Examination, realize multiplexer channel it is real-time, fast and automatically test.It is multiple to refer to 2 or 2 or more in the present embodiment.
In addition, the apparatus may include multiple signals to generate acquisition module 11, can synchronize to multiple audio frequency apparatuses to be measured
It is tested, testing efficiency is higher.
For generation unit 111, illustratively, generation unit 111 can be digital analog converter (Digital-to-
Analog Converter, abbreviation DAC).For example, being used for the data collecting card of DAC.Specifically, 14 high-speed DAC plates can be used
Card sampling output, has 100MS/s (1000000 points/second) sampling rate, 20MHz analog bandwidth.
Illustratively, generation unit 111 can pass through snap-fit connector (British Naval Connector, letter
Claiming BNC) interface is connected to the input terminal of audio frequency apparatus to be measured, PXI (PCIextensions for can be passed through
Instrumentation, PCI (Peripheral Component Interconnection, peripheral group towards instrument system
Part interconnection) extension) bus communicates with controller 121.
For acquisition unit 112, illustratively, acquisition unit 112 is analog-digital converter (Analog-to-Digital
Converter, abbreviation ADC), such as the data collecting card of ADC.
Preferably, audio frequency apparatus to be measured includes two output channels, and acquisition unit 112 is double channel A/D C.For example, can be
Two-way can be achieved at the same time up to 204.8KS/s (1000 points/second) in 4 high-speed ADC board sample-synchronous outputs of two-channel 2-4, sample rate
Analog audio signal acquisition.
Illustratively, the channel of acquisition unit 112 can be connected to the output channel of audio frequency apparatus to be measured by bnc interface.
Acquisition data can be uploaded to controller 121 by PXI bus by acquisition unit 112.When audio frequency apparatus to be measured includes two defeated
Channel out, when acquisition unit 112 is double channel A/D C, double channel A/D C is electrically connected with the controller by PXI bus, double channel A/D C
Binary channels pass through BNC respectively and be electrically connected with two output channels of audio frequency apparatus to be measured.
For controlling analysis module 12, illustratively, referring to fig. 2, which includes controller 121, connects
Mouth unit 122 and computer 123.Controller 121 is electrically connected by interface unit 122 with computer 123.
Controller 121 is used for, and receives the first control instruction of computer 123, is generated based on the control of the first control instruction single
Member 111 exports first object pumping signal, and the output signal in response to first object pumping signal based on acquisition calculates and defeated
For the first test result of the signal of each output channel to computer 123, the first control instruction includes first object excitation letter out
Number frequency and amplitude.
Computer 123 is used for, and shows the first test result of the signal of each output channel.
For interface unit 122, illustratively, interface unit 122 is serial port unit.For example, interface unit 122 can be
Data collecting card for serial ports.Specifically, interface unit 122 is high performance serial interface board, and baud rate can be to 1000000
Baud (baud), while caching is received and dispatched up to 128 Byte.Interface unit 122 is communicated by PXI bus with controller 121.It connects
Mouth unit 122 can be connected to computer 123 with DB9 male connector.
For computer 123, computer 123 can show the first test result in the form of testing journal sheet, and test first
As a result it is printed, testing journal sheet's form being capable of concise displaying test result.
Illustratively, computer 123 can be industrial personal computer.In the production test link of audio frequency apparatus, industrial personal computer software can
The application program being packaged under Windows environment, flexibility can guarantee that controller 121 is integrated to automated production test macro
In.
For industrial personal computer, industrial personal computer may include host and display, and host has serial port unit, the serial port unit of host
It is electrically connected with interface unit 122.Wherein, display can be used for showing the report printing of test result, and the serial port unit of host can
It is issued for the first control instruction and the test result of controller 121 receives.
In a particular application, it can carry in controller 121 based on LabVIEW test software.
Wherein, the first test result may include waveform whether be distorted, frequency spectrum, frequency point monitoring result, power, signal-to-noise ratio,
And at least one of total harmonic distortion.First test result can also include whether power is stable.It is described below and controls
Analysis module 12 processed determines the working principle of the first test result.
Illustratively, when the first test result includes whether waveform is distorted, control analysis module 12 is used for, and is determined adjacent
The point-by-point difference of sampled point amplitude, point-by-point difference refer to, carry out difference calculating to the value of the neighbouring sample point of acquisition signal；Determine letter
When number zero crossing in the signal of output channel neighbouring sample point amplitude difference maximum difference；When neighbouring sample point amplitude is poor point by point
When value is greater than maximum difference, wave distortion is determined.When the point-by-point difference of neighbouring sample point amplitude is less than maximum difference, waveform is determined
It is not distorted.When the point-by-point difference of neighbouring sample point amplitude is equal to maximum difference, determine that wave distortion or waveform are not distorted.
Illustratively, when the first test result includes frequency spectrum, control analysis module 12 is used for, using DFT (Discrete
Fourier Transform, discrete Fourier transform) the unilateral amplitude spectrum of signal for obtaining the real-time sampling period is converted, with sampling
Time calculates the signal frequency interval in real-time sampling period, is based on the unilateral amplitude spectrum of signal and signal frequency interval, draws acquisition
The frequency-amplitude distribution map (frequency spectrum) of signal.Frequency-amplitude distribution map will reflect the frequency and amplitude of signal.
Illustratively, when the first test result includes frequency point monitoring result, control analysis module 12 is used for, using DFT
Transformation obtains the unilateral amplitude spectrum of signal in real-time sampling period, between the signal frequency that the real-time sampling period is calculated with the sampling time
Every based on the unilateral amplitude spectrum of signal and signal frequency interval, the frequency-amplitude distribution map of drafting acquisition signal.Frequency-amplitude point
Butut will reflect each frequency point.Using unilateral amplitude spectrum array element as index, whether real-time monitoring array element corresponds to frequency point
Beyond first object exciting signal frequency range.Frequency point testing result can be frequency point more than first object exciting signal frequency
Range or without frequency point be more than first object exciting signal frequency range.
Illustratively, when the first test result includes power, control analysis module 12 is used for, using FFT (Fast
Fourier Transformation, DFT fast algorithm) transformation measurement acquisition signal spectrum, it is based on signal spectrum, is calculated each
The performance number of frequency point, then the performance number based on each frequency point show average power content with root-mean-square value.
Correspondingly, it when the first test result further includes whether power is stable, is monitored while calculating average power content
Whether the power for acquiring signal is stable.The whether stable monitoring method of power may include: analytical sampling signal after system operation
Real-time average power content, if in real time average power content exceed target power range, then it is assumed that power is unstable, is monitored
Waveform error handling processing.Conversely, if average power content is without departing from target power range in real time, then it is assumed that power stability.Target power
Range can be, ± 1% range of the previous average power content being calculated of current average power content in real time.
Illustratively, when the first test result includes signal-to-noise ratio, control analysis module 12 is used for, and is calculated in sampling interval
Power spectrum, will spectrum peak remove DC (direct current) component after divided by level of noise obtain signal-to-noise ratio.
Illustratively, when the first test result includes total harmonic distortion, control analysis module 12 is used for, and is become using FFT
It gets acquisition power spectrum signal and each harmonic component in return, calculates percentage of the harmonic component with respect to fundamental component, calculate opposite
In total harmonic noise of fundamental frequency, total harmonic distortion is obtained.
Illustratively, the first test result can also include the testing time.Testing time can be by controller 121 from first
Target excitation signal output starts timing, until system operation time reaches setting time value or system monitoring to wave distortion
After stop.
Illustratively, controller 121 can also be by the index parameter being calculated (such as power, signal-to-noise ratio, harmonic distortion
Degree) compared with corresponding qualified setting value, if not identical, then it is assumed that the index parameter is unqualified.Correspondingly, the first test
It as a result include whether the index parameter is qualified.
Illustratively, when controller 121 monitor wave distortion, have frequency point be more than first object exciting signal frequency model
Enclose, total harmonic distortion is more than that preset value, power is unstable and certain index parameter it is unqualified in it is any when, controller 121 can be with
The calculating for stopping remaining first test result, directly uploads the first obtained test result to computer 123.Conversely, when control
Device 121 processed monitors that waveform is undistorted, without frequency point is more than first object exciting signal frequency range, total harmonic distortion and is less than pre-
If value, power stability and index parameter are qualified, controller 121 after the calculating for completing all first test results again
The first test result is uploaded to computer 123.
Test device provided in this embodiment can also realize the dynamic test of audio frequency apparatus to be measured.
Generation unit 111 is also used to, the input terminal of the second target excitation signal of output to audio frequency apparatus to be measured.
Acquisition unit 112 is also used to, and treats the output signal progress for surveying audio frequency apparatus in response to the second target excitation signal
Acquisition, the output signal in response to the second target excitation signal includes the signal of at least one output channel.
Control analysis module 12 is also used to, and control generation unit 111 exports the second target excitation signal, the sound based on acquisition
In the output signal of the second target excitation signal, second test result of the signal of each output channel should be calculated and be exported.
Wherein, controller 121 can carry out the second wheel test after uploading the first test result to computer 123, this
When, control generation unit 111 exports the input terminal of the second target excitation signal to audio frequency apparatus to be measured.
It is below executing subject with controller 121, introduces the workflow of the test device comprising following step
Suddenly.
The first step, the initialization of 121 hardware resource parameter configuration of controller, and obtain industrial personal computer and issue test instruction again
Configuration hardware resource simultaneously initializes.
Second step, control 111 output drive signal of generation unit to tested audio frequency apparatus.
Third step receives the tested audio frequency apparatus that acquisition unit 112 acquires and exports original signal.
4th step, the analysis acquisition initial data of controller 121, calculate the acquisition real time spectrum of signal, frequency point monitoring result,
Power, signal-to-noise ratio, total harmonic distortion parameter index, at the same monitor acquisition signal waveform whether continuous and derivable is undistorted.
5th step, the parameter value relatively calculated in real time and qualified setting value will be surveyed after reaching testing setup setting value
Test result is uploaded to industrial personal computer；When appearance actual measurement index is unqualified, stops test and unqualified index measured value is simultaneously packaged upload
To industrial personal computer.
It is below executing subject with computer 123, introduces the workflow of the test device comprising following step
Suddenly.
Firstly, the configuration initialization of industrial personal computer serial port unit resource parameters.
Secondly, whether detection change configuration parameter control operates, whether adjustment pumping signal instruction is issued.
Then, it is received into serial port unit, the analysis data of controller 121 is waited to upload.It receives measuring unit and uploads number
According to.
Further, the upload data (test result) of controller 121 are parsed, testing journal sheet's file is formed.
Finally, printing test report.
In the present embodiment, industrial personal computer software is related to the test result data that test instruction issues, controller uploads and receives, and
By result with the printing of testing journal sheet's document form.The content of the testing journal sheet may include following test result: tested audio is set
Whether standby index test is qualified (can be shown by image or animation), and being tested audio frequency apparatus cabinet number (can be by work
Make personnel to input after the completion of connection), testing audio classification and TCH test channel, time of measuring, TCH test channel measuring signal
Amplitude, frequency, signal-to-noise ratio, total harmonic distortion degree and performance number.For example, using image (the green light image expression of indicator light
Qualification, red light image indicate unqualified) indicate whether audio frequency apparatus TCH test channel to be measured is qualified in 10 minutes processes of test, it is qualified
Refer to that the indicator measurements such as spectrum distribution, frequency point monitoring result, power, signal-to-noise ratio, the total harmonic distortion degree of acquisition signal are full
Sufficient qualified setting value, and waveform continuous and derivable is undistorted；For another example, the content of testing journal sheet is audio frequency apparatus number to be measured
1#, category of test are the audio-frequency test of audio frequency apparatus to be measured, and TCH test channel is channel one, the channel two of audio frequency apparatus to be measured, are surveyed
Trying the time is 10 minutes, and wherein channel one acquires signal amplitude virtual value 0.49V, frequency 1000Hz, signal-to-noise ratio 83.96dB, humorous
Wave distortion degree degree 0.01%, power 0.24, channel two acquire signal amplitude virtual value 0.49V, frequency 1000Hz, signal-to-noise ratio
76.17dB, total harmonic distortion degree 0.02%, power 0.24.The synthesis display of test result is completed by testing journal sheet, it is simple bright
, avoid miscellaneous work brought by manual analysis mass data.
Fig. 3 shows a kind of test method of audio frequency apparatus performance provided in an embodiment of the present invention, referring to Fig. 3, this method
Process includes the following steps.
The input terminal of step 301, output first object pumping signal to audio frequency apparatus to be measured, audio frequency apparatus to be measured include extremely
A few output channel.
Step 302, treat survey audio frequency apparatus be acquired in response to the output signal of first object pumping signal, in response to
The output signal of first object pumping signal includes the signal of at least one output channel.
Step 303, the output signal in response to first object pumping signal based on acquisition, calculate and export each output
First test result of the signal in channel.
It should be understood that the test device of audio frequency apparatus performance provided by the above embodiment test when, only with above-mentioned
The division progress of each functional module can according to need and for example, in practical application by above-mentioned function distribution by different
Functional module is completed, i.e., the internal structure of equipment is divided into different functional modules, with complete it is described above whole or
Partial function.In addition, the test device of the test method of audio frequency apparatus performance provided by the above embodiment and audio frequency apparatus performance
Embodiment belongs to same design, and specific implementation process is detailed in Installation practice, and which is not described herein again.
Those of ordinary skill in the art will appreciate that realizing that all or part of the steps of above-described embodiment can pass through hardware
It completes, relevant hardware can also be instructed to complete by program, the program can store in a kind of computer-readable
In storage medium, storage medium mentioned above can be read-only memory, disk or CD etc..
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of test device of audio frequency apparatus performance, which is characterized in that described device includes that at least one signal generates acquisition
Module and control analysis module, it includes generation unit and acquisition unit, the acquisition unit tool that the signal, which generates acquisition module,
There is at least one input channel, the quantity of the input channel and the quantity of the output channel of audio frequency apparatus to be measured match,
The generation unit is used for, the input terminal of output first object pumping signal to the audio frequency apparatus to be measured；
The acquisition unit is used for, to the audio frequency apparatus to be measured in response to the first object pumping signal output signal into
Row acquisition, the output signal in response to the first object pumping signal includes the signal of at least one output channel；
The control analysis module is used for, and is controlled the generation unit and is exported the first object pumping signal, based on acquisition
The output signal in response to the first object pumping signal calculates and exports the of the signal of each output channel
One test result.
2. the test device of audio frequency apparatus performance according to claim 1, which is characterized in that the first test result packet
Including whether waveform is distorted, the control analysis module is used for,
Determine the point-by-point difference of neighbouring sample point amplitude；
Determine the maximum difference of neighbouring sample point amplitude difference in the signal of output channel when signal zero-crossing；
When the point-by-point difference of neighbouring sample point amplitude is greater than the maximum difference, wave distortion is determined.
3. the test device of audio frequency apparatus performance according to claim 2, which is characterized in that first test result is also
Including at least one of frequency spectrum, frequency point monitoring result, power, signal-to-noise ratio and total harmonic distortion.
4. the test device of audio frequency apparatus performance according to claim 1, which is characterized in that the control analysis module packet
Include controller, interface unit and computer, the controller by the interface unit and the calculating mechatronics,
The controller is used for, and receives the first control instruction of the computer, based on described in first control instruction control
Generation unit exports the first object pumping signal, based on described in acquisition in response to the defeated of the first object pumping signal
Signal out, the first test result to the computer, described first for calculating and exporting the signal of each output channel are controlled
System instruction includes the frequency and amplitude of the first object pumping signal；
The computer is used for, and shows the first test result of the signal of each output channel.
5. the test device of audio frequency apparatus performance according to claim 1, which is characterized in that
The generation unit is also used to, the input terminal of the second target excitation signal of output to the audio frequency apparatus to be measured；
The acquisition unit is also used to, to the audio frequency apparatus to be measured in response to the output signal of second target excitation signal
It is acquired, the output signal in response to second target excitation signal includes the signal of at least one output channel；
The control analysis module is also used to, and is controlled the generation unit and is exported second target excitation signal, based on acquisition
The output signal in response to second target excitation signal, calculate and export the signal of each output channel
Second test result.
6. the test device of audio frequency apparatus performance according to claim 4, which is characterized in that the interface unit is serial ports
Unit.
7. the test device of audio frequency apparatus performance according to claim 1-6, which is characterized in that the generation is single
Member is digital analog converter.
8. the test device of audio frequency apparatus performance according to claim 1-6, which is characterized in that the acquisition is single
Member is analog-digital converter.
9. the test device of audio frequency apparatus performance according to claim 8, which is characterized in that the audio frequency apparatus packet to be measured
Two output channels are included, the acquisition unit is double-channel analog/digital converter.
10. a kind of test method of audio frequency apparatus performance, which is characterized in that the described method includes:
First object pumping signal is exported to the input terminal of audio frequency apparatus to be measured, the audio frequency apparatus to be measured includes that at least one is defeated
Channel out；
Output signal to the audio frequency apparatus to be measured in response to the first object pumping signal is acquired, it is described in response to
The output signal of the first object pumping signal includes the signal of at least one output channel；
Based on, in response to the output signal of the first object pumping signal, being calculated described in acquisition and export each output
First test result of the signal in channel.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN112104967A (en) * | 2020-09-15 | 2020-12-18 | 九江慧明电子科技有限公司 | Audio aging system and control method thereof |
| CN115225558A (en) * | 2022-07-12 | 2022-10-21 | 中国人民解放军国防科技大学 | Audio test maintenance device and test method for communication equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111372180A (en) * | 2020-03-03 | 2020-07-03 | 深圳市金锐显数码科技有限公司 | Detection method and detection system of intelligent earphone |
| CN112104967A (en) * | 2020-09-15 | 2020-12-18 | 九江慧明电子科技有限公司 | Audio aging system and control method thereof |
| CN115225558A (en) * | 2022-07-12 | 2022-10-21 | 中国人民解放军国防科技大学 | Audio test maintenance device and test method for communication equipment |
| CN115225558B (en) * | 2022-07-12 | 2024-04-02 | 中国人民解放军国防科技大学 | Communication equipment audio test method |
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