CN114390421A - Automatic testing method for microphone matrix and loudspeaker - Google Patents
Automatic testing method for microphone matrix and loudspeaker Download PDFInfo
- Publication number
- CN114390421A CN114390421A CN202111463004.XA CN202111463004A CN114390421A CN 114390421 A CN114390421 A CN 114390421A CN 202111463004 A CN202111463004 A CN 202111463004A CN 114390421 A CN114390421 A CN 114390421A
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- sound
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- loudspeaker
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- 238000012360 testing method Methods 0.000 title claims abstract description 45
- 239000011159 matrix material Substances 0.000 title claims abstract description 10
- 230000005236 sound signal Effects 0.000 claims abstract description 26
- 238000009413 insulation Methods 0.000 claims abstract description 10
- 230000005284 excitation Effects 0.000 claims abstract description 8
- 238000012545 processing Methods 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 7
- 238000011156 evaluation Methods 0.000 claims description 4
- 230000004044 response Effects 0.000 claims description 4
- 239000000047 product Substances 0.000 description 14
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000011990 functional testing Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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
- H04R29/004—Monitoring arrangements; Testing arrangements for microphones
- H04R29/005—Microphone arrays
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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
- H04R29/002—Loudspeaker arrays
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The invention discloses an automatic testing method of a microphone matrix and a loudspeaker, which comprises the following steps: s1: opening a sound insulation box door, starting up after a product to be tested is put in, and closing the sound insulation box door; s2: according to the first test instruction, the product to be tested plays the first audio file to send an excitation signal to the loudspeaker group; s3: the loudspeaker group receives a plurality of sound signals corresponding to the excitation signals and sends the sound signals to the audio analyzer, and the audio analyzer performs analysis processing according to a preset value and outputs test result data corresponding to the sound signals; s4: according to the second test instruction, the sound box plays a second audio file, and three microphones in the product to be tested simultaneously acquire audio signals sent by the sound box; s5: and analyzing and processing the acquired waveform of the audio signal according to a preset item set, and calculating and judging the consistency and the directivity of the three microphones. The automatic testing method of the microphone matrix and the loudspeaker provided by the invention replaces manual judgment, and improves the testing efficiency.
Description
Technical Field
The invention relates to the technical field of testing methods, in particular to an automatic testing method for a microphone matrix and a loudspeaker.
Background
At present functional test station when testing product function, the artifical recording of product utilizes the people's ear to distinguish the good or bad of microphone or when the product broadcast sound, utilizes the people's ear to distinguish the good or bad of loudspeaker, appears following problem when the test:
a. manual judgment is needed, and if a plurality of devices are tested simultaneously, interference exists among the devices;
b. the judgment standards of each person are different, and the result cannot be quantized;
c. and no test report exists, and the test result cannot be traced.
Disclosure of Invention
The invention mainly solves the technical problem of providing an automatic testing method of a microphone matrix and a loudspeaker, which replaces manual judgment, improves the testing efficiency, quantifies the testing result and the testing standard, and can store the collected file and the testing report for tracing.
In order to solve the technical problems, the invention adopts a technical scheme that: the automatic testing method for the microphone matrix and the loudspeaker comprises the following steps:
s1: opening a sound insulation box door, starting up after a product to be tested is put in, and closing the sound insulation box door;
s2: according to the first test instruction, the product to be tested plays the first audio file to send an excitation signal to the loudspeaker group;
s3: the loudspeaker group receives a plurality of sound signals corresponding to the excitation signals and sends the sound signals to the audio analyzer, the audio analyzer performs analysis processing according to a preset value and outputs test result data corresponding to the sound signals, specifically, the audio analyzer judges the sound signals according to a preset value standard, outputs judgment results, and outputs test reports according to the judgment results
S4: according to the second test instruction, the sound box plays a second audio file, and three microphones in the product to be tested simultaneously acquire audio signals sent by the sound box;
s5: and analyzing and processing the acquired waveform of the audio signal according to a preset item set, and calculating and judging the consistency and the directivity of the three microphones.
In an embodiment of the present invention, the speaker set includes speakers disposed at left and right sides of the rack.
In one embodiment of the invention, the sound signal comprises a frequency response signal and a noise signal.
In an embodiment of the present invention, the sound box is disposed at the bottom of the rack and faces the product to be tested.
In an embodiment of the invention, the audio analyzer evaluates the sound signal according to a preset value standard, outputs an evaluation result, and outputs a test report according to the evaluation result.
The invention has the beneficial effects that: the automatic testing method for the microphone matrix and the loudspeaker replaces manual judgment, improves testing efficiency, quantifies testing results and testing standards, and can store collected files and testing reports for tracing.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention comprises the following steps: an automatic testing method for microphone matrix and loudspeaker comprises the following steps:
s1: opening a sound insulation box door, starting up after a product to be tested is put in, and closing the sound insulation box door;
s2: according to the first test instruction, the product to be tested plays the first audio file to send an excitation signal to the loudspeaker group;
s3: the loudspeaker group receives a plurality of sound signals corresponding to the excitation signals and sends the sound signals to the audio analyzer, and the audio analyzer performs analysis processing according to a preset value and outputs test result data corresponding to the sound signals;
s4: according to the second test instruction, the sound box plays a second audio file, and three microphones in the product to be tested simultaneously acquire audio signals sent by the sound box;
s5: and analyzing and processing the acquired waveform of the audio signal according to a preset item set, and calculating and judging the consistency and the directivity of the three microphones.
Specifically, loudspeaker group is including setting up the loudspeaker in left and right both sides position in the frame, and the audio amplifier sets up in the bottom of frame and just right the examination product of awaiting measuring, the position of audio amplifier and loudspeaker can be according to demand adjustment position.
Specifically, sound signal includes frequency response signal and noise signal, and whole testing process places in the sound-proof box, and the action of accessible control software control sound-proof box avoids the loaded down with trivial details operation of artificial unpacking, has realized automated operation.
The operation flow is as follows:
the method comprises the following steps: opening a sound insulation box door, starting up after a product to be tested is put in, and then closing the sound insulation box door;
step two: playing an audio file with a frequency gradually changed by 20-20KHz by a product to be tested, playing the audio file for 3 seconds, and respectively collecting sounds emitted by product loudspeakers by microphones on the left side and the right side when the file is played;
inputting the collected sound into an audio analyzer to obtain a frequency response result and a distortion degree result;
and fourthly, playing a sound file of 100-8KHz by the computer, simultaneously collecting the three microphones of the product to be tested, and calculating the consistency and the directivity of the three microphones according to the collected waveforms.
The invention has the beneficial effects that: the automatic test system has the advantages of high automation degree, replacement of manual operation, reduction of labor intensity, labor cost saving, improvement of test efficiency, quantification of test results and test standards, and storage of collected files and test reports for tracing.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (5)
1. An automatic testing method for microphone matrix and loudspeaker is characterized by comprising the following steps:
s1: opening a sound insulation box door, starting up after a product to be tested is put in, and closing the sound insulation box door;
s2: according to the first test instruction, the product to be tested plays the first audio file to send an excitation signal to the loudspeaker group;
s3: the loudspeaker group receives a plurality of sound signals corresponding to the excitation signals and sends the sound signals to the audio analyzer, and the audio analyzer performs analysis processing according to a preset value and outputs test result data corresponding to the sound signals;
s4: according to the second test instruction, the sound box plays a second audio file, and three microphones in the product to be tested simultaneously acquire audio signals sent by the sound box;
s5: and analyzing and processing the acquired waveform of the audio signal according to a preset item set, and calculating and judging the consistency and the directivity of the three microphones.
2. The method of claim 1, wherein the speaker sets comprise speakers disposed on left and right sides of the chassis.
3. The method of claim 1, wherein the sound signals comprise frequency response signals and noise signals.
4. The method of claim 1, wherein the speaker is disposed at a bottom of the housing and faces the product to be tested.
5. The method of claim 1, wherein the audio analyzer evaluates the audio signal according to a predetermined value standard, outputs an evaluation result, and outputs a test report according to the evaluation result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111463004.XA CN114390421A (en) | 2021-12-03 | 2021-12-03 | Automatic testing method for microphone matrix and loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111463004.XA CN114390421A (en) | 2021-12-03 | 2021-12-03 | Automatic testing method for microphone matrix and loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114390421A true CN114390421A (en) | 2022-04-22 |
Family
ID=81195161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111463004.XA Pending CN114390421A (en) | 2021-12-03 | 2021-12-03 | Automatic testing method for microphone matrix and loudspeaker |
Country Status (1)
| Country | Link |
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| CN (1) | CN114390421A (en) |
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2021
- 2021-12-03 CN CN202111463004.XA patent/CN114390421A/en active Pending
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| US20130083935A1 (en) * | 2011-09-30 | 2013-04-04 | Inventec Corporation | Method for testing an audio jack of a portable electronic device |
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