CN111182434A - Conference system microphone anomaly detection method, conference system and test system - Google Patents
Conference system microphone anomaly detection method, conference system and test system Download PDFInfo
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- CN111182434A CN111182434A CN201911411369.0A CN201911411369A CN111182434A CN 111182434 A CN111182434 A CN 111182434A CN 201911411369 A CN201911411369 A CN 201911411369A CN 111182434 A CN111182434 A CN 111182434A
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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
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
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- H04N7/15—Conference systems
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Abstract
The invention discloses a conference system microphone abnormity detection method, which comprises a standard frequency response range generation step; acquiring a detection frequency response curve; and an anomaly detection step, namely comparing the detection frequency response curve with the standard frequency response range, if the detection frequency response curve is positioned in the standard frequency response range, judging that the detection item of the standard sound source file passes, and otherwise, judging that the detection item of the standard sound source file does not pass. By adopting the technical scheme of the invention, the test environment is simple to build, the production test cost is low, the operation is simple and convenient, the operation of production line workers is facilitated, the microphone characteristic of the product is rapidly detected, and the abnormal reason is positioned.
Description
Technical Field
The invention relates to a conference system microphone abnormity detection method, a conference system and a test system.
Background
At present, a conference system is developed into an integrated light high-definition video conference terminal, and generally comprises a microphone array, a loudspeaker and a camera, and the acoustic performance is very critical to the conference system. When detecting the audio acoustic performance of the whole conference system product, the acoustic performance of acoustic devices such as a microphone, a loudspeaker, a receiver and the like is one of important standards for judging whether the production quality of the mobile terminal is qualified. The effect of the microphone directly affects the sound quality of the sound heard by the listener at the opposite end, and if the microphone on the equipment taken by the customer has abnormal phenomena, such as sensitivity abnormality, reverse connection of the positive electrode and the negative electrode of the welding wire, no connection and the like, the communication quality of the product is affected, and the impression and the purchase intention of the customer on the product are seriously affected. Therefore, before the conference system product leaves the factory, the microphone is automatically detected, which is a very important step in the production process.
When conference systems are produced in large quantities on a production line, audio quality is often tested by professional audio test engineers through manual listening tests or electroacoustic test instrument devices. If the judgment is difficult to quantify by depending on subjective feeling of people, the consistency of results is difficult to ensure, and some production personnel on the production line are inexperienced persons, and if the abnormality of a microphone product is detected, the reason for the abnormality of the microphone test data cannot be accurately positioned. The electroacoustic testing instrument is very expensive, and expensive testing equipment such as an artificial mouth and the like is additionally arranged, so that the electroacoustic testing instrument can only test whether the microphone data is within a threshold range, and the reason of the abnormality cannot be judged or positioned.
Therefore, in order to avoid the problems of difference, incapability of quantification and pursuit and the like caused by manual subjective detection of production personnel, the invention provides a microphone abnormity detection and positioning method of a conference system, which realizes simple and efficient automatic detection of microphones of the conference system on a large-batch production line and positions the reasons of microphone abnormity.
Disclosure of Invention
The invention aims to solve the problem that a microphone of a production line test conference system is difficult, and avoid the problems of difference, incapability of quantifying and positioning abnormal reasons and the like caused by artificial subjective detection of the production line.
The invention provides a conference system microphone abnormity detection method, which comprises a standard frequency response range generation step, wherein a plurality of conference systems are selected as standard conference systems, a test system is sequentially accessed, standard speakers play standard sound source files, and microphones of the standard conference systems collect the played audio of the standard speakers; the test system respectively carries out frequency response curve analysis on all the acquired signals, averages all the frequency response curves to generate a standard frequency response curve, and shifts the standard frequency response curve according to the allowable shift range of the microphone to form a standard frequency response range of the microphone for the standard sound source file;
a step of obtaining a detection frequency response curve, which is to access a conference system to be tested with the same model as the standard conference system into the test system, play the standard sound source file by the standard loudspeaker, collect the play audio of the standard loudspeaker by a microphone of the conference system to be tested, analyze the frequency response curve of the collected signal by the test system, and use the obtained frequency response curve as the detection frequency response curve of the microphone for the standard sound source file;
and an anomaly detection step, namely comparing the detection frequency response curve with the standard frequency response range, if the detection frequency response curve is positioned in the standard frequency response range, judging that the detection item of the standard sound source file passes, and otherwise, judging that the detection item of the standard sound source file does not pass.
Furthermore, the standard sound source files comprise 4 standard sound source files, wherein a standard sound source file 1 is 20-10khz frequency sweeping tones, a standard sound source file 2 is 1khz sine tone, a standard sound source file 3 is 600-700hz frequency sweeping tones, a standard sound source file 4 is 200-300hz frequency sweeping tones, and corresponding detection items are microphone sensitivity judgment, microphone wiring condition judgment, microphone welding line positive and negative electrode judgment and different directional microphone dislocation judgment respectively; the standard frequency response range generation step plays the 4 standard sound source files respectively to generate corresponding standard frequency response ranges; and the step of acquiring the detection frequency response curves plays the 4 standard sound source files respectively to acquire the corresponding detection frequency response curves.
Further, the abnormality detecting step may further include,
an abnormality detection step A, comparing a detection frequency response curve of the microphone aiming at the standard sound source file 1 with a standard frequency response range;
an abnormality detection step B, comparing a detection frequency response curve of the microphone aiming at the standard sound source file 2 with a standard frequency response range;
an anomaly detection step C, comparing a detection frequency response curve of the microphone aiming at the standard sound source file 3 with a standard frequency response range;
and D, an anomaly detection step, namely comparing the detection frequency response curve of the microphone aiming at the standard sound source file 4 with a standard frequency response range.
Further, the abnormality detecting step further includes stopping the detection if the detection of the abnormality detecting step a passes, and executing the abnormality detecting step B if the detection does not pass; stopping the detection if the detection of the abnormality detection step B is not passed, and executing the abnormality detection step C if the detection is passed; and C, stopping detection if the detection is not passed in the abnormality detection step C, and executing the abnormality detection step D if the detection is passed.
Furthermore, the conference system comprises a plurality of microphones, the microphones have different directivities, the microphones respectively collect the playing audio of the standard loudspeaker, and the test system respectively generates a corresponding standard frequency response range and a corresponding detection frequency response curve for the microphones and the standard audio source file; and the abnormality detection step respectively compares the detection frequency response curve of each microphone for different audio source files with the standard frequency response range, and if one microphone in the conference system fails to pass the detection, the corresponding abnormality detection step is to fail the detection.
Furthermore, there is an interval in the middle of the standard sound source file played by the standard loudspeaker, and the interval is used for the test system to distinguish different standard sound source files.
Further, the sound source of the standard speaker is from the conference system or the test system.
The invention also provides a conference system for the conference system microphone abnormity detection method, the conference system comprises a storage unit, a USB interface unit, a network communication unit and a microphone unit, the storage unit stores a standard sound source file and a test software module, the test software module controls the USB interface unit to play the standard sound source file, controls the microphone unit to collect external audio to generate an audio file, and controls the network communication unit to send the audio file to a computer-side audio test tool for frequency response curve analysis.
The invention also provides a test system for the conference system, the test system comprises a standard loudspeaker, a computer and the conference system, the standard loudspeaker is connected with the conference system through a USB, the conference system is connected with the computer through a network cable, and the computer runs the computer-side audio test tool to perform frequency response curve analysis.
By adopting the technical scheme of the invention, the test environment is simple to build, the production test cost is low, the operation is simple and convenient, the operation of production line workers is facilitated, the microphone characteristic of the product is rapidly detected, and the abnormal reason is positioned.
The conference system plays the standard sound source file through the standard loudspeaker connected with the external USB of the conference system, the consistency of the played sound source is ensured, each path of microphone of the conference system collects and analyzes the received audio frequency, and whether each path of microphone is abnormal or not is judged through analyzing the audio frequency file.
The measuring method provided by the invention can combine the measurement of the tested equipment and the measurement of the virtual instrument together, and realizes the analysis and judgment of the sound signals collected by each microphone of the tested equipment, thereby rapidly measuring the tested equipment.
The invention has a quick diagnosis effect on the problem that whether the microphone is misplaced or not in conference system equipment with different built-in directional microphones.
Drawings
FIG. 1 is a diagram of a test environment constructed in accordance with the present invention;
fig. 2 is a functional block diagram of the device under test 2, i.e., a conference system, of the present invention;
fig. 3 is a diagram illustrating a standard frequency response range.
Detailed Description
The following description of the embodiments refers to the accompanying drawings for illustrating the specific embodiments in which the invention may be practiced.
FIG. 1 is a diagram of a test environment constructed in accordance with the present invention. A test environment is first set up. The central position fixedly places 1 standard speaker 1 in the silence case, and equipment under test 2 is fixed on the audio test frame promptly the conference system, and standard speaker 1 is connected to equipment under test 2 through USB line 6, and equipment under test 2 embeds standard sound source file and microphone test control program, starts built-in microphone test control program and just can play standard sound source file and export audio signal to standard speaker 1 through USB line 6. The standard speaker 1 is fixed at a distance D above the microphone 7 of the device under test 2, the value of this embodiment D is 10CM, but is not limited to 10CM, and the device under test 2 is provided with 4 microphones 7, and has different directivities. The computer 5 is in communication connection with the tested equipment 2 through the network cable 4, after a built-in test program is started, 4 tested microphones 7 begin to capture the sound of a standard loudspeaker and convert the sound into digital audio signals, the digital audio signals generated by capturing of each tested microphone are transmitted to the computer 5 through the network cable 4, and the microphone characteristics can be automatically judged by leading in test tool software developed by a virtual instrument in the computer 5, so that the microphone characteristics of the tested equipment can be rapidly detected.
Fig. 2 is a functional block diagram of the device under test 2, i.e. a conferencing system, of the present invention. The main control unit 21 runs a system control program and various application programs such as a microphone test control program of the present invention, and at the same time, controls other functional modules of the conference system such as a USB interface unit 22, a display unit 23, a speaker unit 24, a microphone unit 25, a camera unit 26, a storage unit 27, a network communication unit 28, and a power supply 29. The USB interface unit 22 is a USB interface, which is compatible with the USB control protocol and is also used for transmitting audio signals, and the standard speaker 1 of the present invention is connected to the USB interface unit and is used for playing the audio signals played by the test program when the microphone test program of the conference system is running. The display unit 23 is a liquid crystal screen for status display and simple interaction of the conference system. The speaker unit 24 is used for playing sound when the conference system is working, in the present invention, the speaker unit 24 is turned off, and sound is played by the standard speaker 1. The microphone unit 25 is used for receiving a voice signal and converting the voice signal into a digital audio signal, and in the present invention, the microphone unit 25 is a measured object which includes 4 microphones, and the directivity may be different according to the design of the conference system. The camera unit 26 is used to take video of the conference site. The storage unit 27 is used for storing system programs and files, microphone test control programs, standard audio files, and the like. The network communication interface 28 is used for network communication, and in the present invention, it can be connected to the computer 5 for network communication, and the testing tool software can send the testing control command through the interface and receive the audio files generated by each microphone unit 25.
The method mainly comprises the steps of playing 4 different standard sound source files and analyzing and judging for 4 times, wherein the 4 different standard sound source files and the 4 times of analyzing and judging are mainly used for microphone sensitivity judgment, microphone wiring condition judgment, microphone welding line positive and negative judgment and different directional microphone dislocation judgment. The 4 standard sound source files used in the present invention are, respectively, a sound source 1 is 20-10khz sweep tone, a sound source 2 is 1khz sine tone, a sound source 3 is 600-700hz sweep tone, and a sound source 4 is 200-300hz sweep tone. Each sound source file can be played for 1s in sequence, and each playing is judged once, so that production line workers can conveniently check the sound source files. The specific test procedure is described in detail below.
Before actual test, 5 test devices, namely a conference system, are prepared as standard devices, and the testing devices are disassembled to confirm that the sensitivity of each microphone monomer is qualified, welding wires of the anode and the cathode of the microphone are correct, the microphone port is correctly accessed into a circuit, and microphones with different directivities are accessed into correct notches. And sequentially accessing 5 test devices to the test environment set up in the figure 1. After one piece of equipment is connected, the standard loudspeaker sequentially plays standard sound sources 1, 2, 3 and 4, and the interval is 0.5s every time a standard audio file is played, so that the standard audio file is used for test tool software to cut off, analyze and process the standard audio file. The 4 microphones under test record the received audio signals simultaneously and generate 4 audio files. When the testing of one conference system is finished, the corresponding audio file is read by the testing tool software, and when the 5 devices are completely tested, the testing tool software carries out statistical analysis on all the received 20 audio files according to the corresponding microphones respectively, each microphone corresponds to 5 files, intercepting the audio frequency segment corresponding to each standard sound source file according to the microphone and carrying out frequency response curve analysis, and the average value is taken after the superposition, the average value is taken as the standard frequency response curve of the microphone aiming at the standard sound source file, the allowable excursion range of the frequency response of the microphone is then determined, based on the specification of the microphone, to be +/-3dB, and through the allowable offset range under the standard sound source file, the standard frequency response curve is moved up by 3dB and moved down by 3dB, and the standard frequency response range of the microphone can be determined. Fig. 3 is a diagram illustrating a standard frequency response range. The upper limit 31 and the lower limit 33 of the standard frequency response range curve are obtained by shifting the standard frequency response curve by 3dB up and down, the range is the standard frequency response range, if the detection frequency response curve 34 formed by the test value 32 is located in the standard frequency response range, the test is passed, otherwise, the test is not passed.
The conference system is provided with 4 microphones, two directional microphones and two omnidirectional microphones, the microphones under different standard sound sources and at different positions all have standard frequency response curves and standard frequency response ranges, and the corresponding relations are as follows:
under the standard sound source 1, the standard frequency response ranges from the microphone 1 to the microphone 4 are S11, S12, S13 and S14 respectively;
under the standard sound source 2, the standard frequency response ranges of the microphone 1 to the microphone 4 are respectively S21, S22, S23 and S24;
under the standard sound source 3, the standard frequency response ranges of the microphone 1 to the microphone 4 are respectively S31, S32, S33 and S34;
under the standard sound source 4, the standard frequency response ranges of the microphone 1 to the microphone 4 are S41, S42, S43 and S44, respectively.
After the standard frequency response curves and the standard frequency response ranges of the microphones at different positions under different standard sound sources are determined, the tested equipment can be tested. Similarly, the tested equipment, namely the conference system of the same type as the standard equipment is accessed into the test system in the same way and then is tested.
Playing the standard sound source 1 for the first time: the standard loudspeaker plays a section of sweep frequency sound source 1 through the internal control command of the tested equipment, namely the conference system, and simultaneously triggers each path of microphone of the conference system to collect sound signals. The conference system uploads the audio signal generation files collected by the microphones to the PC for storage, test tool software in the PC automatically reads the files and performs frequency response curve analysis to obtain detection frequency response curves corresponding to the microphones, wherein the detection frequency response curves are D11, D12, D13 and D14 respectively. And (3) respectively comparing and judging the detection frequency response curves (D11, D12, D13 and D14) of the microphones with the standard frequency response ranges (S11, S12, S13 and S14) of the microphones aiming at the standard sound source file 1, wherein if the detection frequency response curves are located in the standard frequency response ranges, the judgment is passed, and if not, the judgment is not passed. If the microphone passes the test, stopping the test, and not performing other tests; if the microphone is judged not to pass through the channel, the microphone is abnormal, a subsequent test needs to be carried out, and the reason of the microphone abnormality is located.
And playing the standard sound source for the second time 2: if the first judgment fails, the microphone is abnormal, and the testing tool software in the PC automatically controls the standard loudspeaker to play the standard sound source 2 to judge the microphone wiring condition. All paths of microphones of the conference system simultaneously collect sound signals, a generated file is uploaded to a PC for storage, test tool software in the PC automatically reads the file and performs frequency response curve analysis to obtain corresponding detection frequency response curves, namely D21, D22, D23 and D24. Similarly, the detection frequency response curves [ D21, D22, D23 and D24 ] of each microphone are respectively compared and judged with the standard frequency response ranges [ S21, S22, S23 and S24 ] of each microphone for the standard sound source file 2, if the detection frequency response curves are located in the standard frequency response ranges, the judgment is passed, otherwise, the judgment is not passed. If the test of each microphone passes, the wiring of each microphone is normal, the subsequent test is needed, and the reason of the microphone abnormality is further positioned; if any path fails, the test is stopped, which indicates that the microphone is abnormal in the connection position, and if the microphone welding line is not connected, the subsequent other tests are not carried out, and the microphone is required to be dismounted to check whether the microphone does not pass or is not connected into the circuit.
Playing the standard sound source 3 for the third time: if the second judgment is passed, the microphone is correctly connected to the circuit, the test tool software in the PC automatically controls the standard loudspeaker to play the standard sound source 3, and the condition of the positive and negative electrodes of the welding line of the microphone is judged. All paths of microphones of the conference system simultaneously collect sound signals, a generated file is uploaded to a PC for storage, test tool software in the PC automatically reads the file and performs frequency response curve analysis to obtain corresponding detection frequency response curves, namely D31, D32, D33 and D34. Similarly, the detection frequency response curves [ D31, D32, D33 and D34 ] of each microphone are respectively compared and judged with the standard frequency response ranges [ S31, S32, S33 and S34 ] of each microphone for the standard sound source file 3, if the detection frequency response curves are located in the standard frequency response ranges, the judgment is passed, otherwise, the judgment is not passed. If the microphone passes the test, the welding wires of the microphones are welded correctly, the abnormality that the positive electrode and the negative electrode are connected reversely is eliminated, the subsequent test is needed, and the reason of the abnormality of the microphones is further positioned; if the test result is not passed, the test is stopped, if the positive and negative electrodes of the microphone which is not passed are connected reversely, other tests are not carried out, and the microphone needs to be disassembled to check whether the positive and negative electrodes of the microphone which is not passed are connected reversely.
Fourth playing the standard sound source 4: if the third judgment is passed, the connection of the positive electrode and the negative electrode of the bonding wire of each microphone is correct, and the test tool software in the PC automatically controls the standard loudspeaker to play the standard sound source 4 to perform the malposition judgment of the microphones with different directivities. All paths of microphones of the conference system simultaneously collect sound signals, a generated file is uploaded to a PC for storage, test tool software in the PC automatically reads the file and performs frequency response curve analysis to obtain corresponding detection frequency response curves, namely D41, D42, D43 and D44. Similarly, the detection frequency response curves [ D41, D42, D43 and D44 ] of each microphone are respectively compared and judged with the standard frequency response ranges [ S41, S42, S43 and S44 ] of each microphone for the standard sound source file 4, if the detection frequency response curves are located in the standard frequency response ranges, the judgment is passed, otherwise, the judgment is not passed. If the microphone passes the test, the different directional microphones have no dislocation problem, and the reason for the abnormal sensitivity of the microphone monomer can be basically determined through the four times of input tests of the standard sound source; if the microphone fails, the test is stopped, and if the microphone with different directivities is accessed in a staggered mode, other tests are not carried out, and the microphone does not pass through the test after disassembly and inspection. The dislocation means that the access positions of a directional microphone and an omnidirectional microphone arranged in the conference system are interchanged.
The specific steps of the embodiment of the present invention are described below.
Step 1: building a test environment: the central position fixedly places 1 standard speaker in the silence case, and the phone under test is fixed to be placed on the audio test frame, and standard speaker passes through USB and is connected to equipment under test, and standard speaker is fixed in the 10cm department above the phone under test. The computer 5 is provided with test tool software and is connected with the tested equipment through a network cable.
Step 2: preparing 5 conference systems which contain a plurality of microphones with different directivities, disassembling the conference systems to confirm that the microphone single bodies are qualified, welding wires of the anode and the cathode of the microphones are correct, microphone ports are correctly connected with a circuit, and the microphones with different directivities are connected with correct slots.
And step 3: the standard loudspeaker plays the standard sound source 1, 2, 3, 4 in turn, records and counts the frequency response curve of each microphone of 5 conference systems, and determines the standard frequency response curve of the microphones at different positions under different standard sound sources and the corresponding standard frequency response range. The conference system of the embodiment has 4 microphones, two directional microphones and two omnidirectional microphones, and the microphones at different positions all have corresponding standard frequency response ranges.
And 4, step 4: and removing the conference system as the standard reference, and accessing the conference system to be tested in the same way. And a computer-side audio testing tool developed by combining a virtual instrument Labview.
And 5: opening a computer-side testing tool developed by a virtual instrument Labview, triggering to start testing, controlling a standard loudspeaker to automatically play a standard sound source 1 through an internal control command of tested equipment, namely a conference system, judging the sound source according to sensitivity, simultaneously acquiring sound signals by all paths of microphones of the conference system, uploading data to a PC (personal computer), and automatically reading the data by testing tool software in the PC and comparing and judging a threshold value. If the judgment is passed, the test of each microphone is passed, the test is stopped, and other tests are not carried out; and if the microphone does not pass through a certain path, judging that the microphone is abnormal, and performing subsequent tests to locate the reason of the abnormality of the microphone.
Step 6: if the test in the step 5 fails, the audio test tool at the computer end triggers the tested equipment, namely the internal control command of the conference system, to control the standard loudspeaker to play the standard sound source 2, so as to judge the wiring condition of the microphone, each path of microphone of the conference system simultaneously collects sound signals and uploads the data to the PC, and the test tool software in the PC automatically reads the data and compares and judges the threshold value. If the judgment is passed, the wiring of each microphone is normal, the subsequent test needs to be carried out, and the reason of the microphone abnormality is further positioned; if the microphone does not pass the test, stopping the test, and not performing other tests later, and needing to be disassembled to check whether the microphone does not pass the test and is not connected into the circuit.
And 7: if the test in the step 6 passes, the audio test tool at the computer end triggers the tested equipment, namely the internal control command of the conference system, to control the standard loudspeaker to play the standard sound source 3, the condition that the microphone is connected with the welding line and the anode and cathode is judged, all paths of microphones of the conference system simultaneously acquire sound signals and upload the data to the PC, and the test tool software in the PC automatically reads the data and compares and judges the threshold value. If the judgment is passed, the welding of each microphone welding wire is correct, the subsequent test needs to be carried out, and the reason of the microphone abnormity is further positioned; and stopping the test if the test fails, and performing other tests later without disassembling the machine to check whether the positive electrode and the negative electrode of the welding wire of the microphone are reversely connected or not.
And 8: if the test in the step 7 passes, the audio test tool at the computer end triggers the tested equipment, namely the internal control command of the conference system, to control the standard loudspeaker to play the standard sound source 4, and carries out malposition judgment on different directional microphones, each microphone of the conference system simultaneously collects sound signals and uploads the data to the PC, and the test tool software in the PC automatically reads the data and carries out threshold value comparison and judgment. If the microphone passes the judgment, the microphone with different directivities does not have a dislocation problem, and the reason for the abnormal sensitivity of the microphone monomer can be determined; if the microphone fails, the test is stopped, other tests are not carried out, and the microphone is required to be dismounted to check whether the microphone fails or is misplaced.
The above are examples of the present invention. It should be noted that, in the embodiment, the storage and the playing of the standard sound source file are both completed by the device under test, and in practice, the storage and the playing of the standard sound source file can also be completed by the computer terminal, that is, the computer terminal stores the standard sound source file, and the audio output port of the computer terminal is connected with the standard speaker, so that the playing of the standard sound source is completed by the computer terminal.
In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention shall be determined by the appended claims.
Claims (9)
1. A conference system microphone abnormity detection method is characterized by comprising a standard frequency response range generation step, wherein a plurality of conference systems are selected as standard conference systems, a test system is sequentially accessed, standard speakers play standard sound source files, and microphones of the standard conference systems collect the played audio of the standard speakers; the test system respectively carries out frequency response curve analysis on all the acquired signals, averages all the frequency response curves to generate a standard frequency response curve, and shifts the standard frequency response curve according to the allowable shift range of the microphone to form a standard frequency response range of the microphone for the standard sound source file;
a step of obtaining a detection frequency response curve, which is to access a conference system to be tested with the same model as the standard conference system into the test system, play the standard sound source file by the standard loudspeaker, collect the play audio of the standard loudspeaker by a microphone of the conference system to be tested, analyze the frequency response curve of the collected signal by the test system, and use the obtained frequency response curve as the detection frequency response curve of the microphone for the standard sound source file;
and an anomaly detection step, namely comparing the detection frequency response curve with the standard frequency response range, if the detection frequency response curve is positioned in the standard frequency response range, judging that the detection item of the standard sound source file passes, and otherwise, judging that the detection item of the standard sound source file does not pass.
2. The method according to claim 1, wherein the standard audio source files include 4 standard audio source files, the standard audio source file 1 is 20-10khz sweep tone, the standard audio source file 2 is 1khz sine tone, the standard audio source file 3 is 600-700hz sweep tone, the standard audio source file 4 is 200-300hz sweep tone, and the corresponding detection items are respectively microphone sensitivity judgment, microphone wiring condition judgment, microphone welding line positive and negative electrode judgment and microphone dislocation judgment of different directional microphones; the standard frequency response range generation step plays the 4 standard sound source files respectively to generate corresponding standard frequency response ranges; and the step of acquiring the detection frequency response curves plays the 4 standard sound source files respectively to acquire the corresponding detection frequency response curves.
3. The conference system microphone abnormality detection method according to claim 2, characterized in that the abnormality detection step further includes,
an abnormality detection step A, comparing a detection frequency response curve of the microphone aiming at the standard sound source file 1 with a standard frequency response range;
an abnormality detection step B, comparing a detection frequency response curve of the microphone aiming at the standard sound source file 2 with a standard frequency response range;
an anomaly detection step C, comparing a detection frequency response curve of the microphone aiming at the standard sound source file 3 with a standard frequency response range;
and D, an anomaly detection step, namely comparing the detection frequency response curve of the microphone aiming at the standard sound source file 4 with a standard frequency response range.
4. The conference system microphone abnormality detecting method according to claim 3, wherein the abnormality detecting step further includes stopping the detection if the abnormality detecting step a detects a pass, and executing the abnormality detecting step B if the detection does not pass; stopping the detection if the detection of the abnormality detection step B is not passed, and executing the abnormality detection step C if the detection is passed; and C, stopping detection if the detection is not passed in the abnormality detection step C, and executing the abnormality detection step D if the detection is passed.
5. The method as claimed in any one of claims 2 to 4, wherein the conference system includes a plurality of microphones, the microphones have different directivities, and respectively collect the audio played by the standard speakers, and the test system respectively generates corresponding standard frequency response ranges and detection frequency response curves for the microphones and the standard audio source files; and the abnormality detection step respectively compares the detection frequency response curve of each microphone for different audio source files with the standard frequency response range, and if one microphone in the conference system fails to pass the detection, the corresponding abnormality detection step is to fail the detection.
6. The method as claimed in any one of claims 2 to 4, wherein there is an interval between the standard speakers playing the standard audio files, and the interval is used for the test system to distinguish different standard audio files.
7. The method of claim 6, wherein the sound source of the standard speaker is from the conference system or the test system.
8. A conference system for the method for detecting microphone abnormality in a conference system as claimed in any one of claims 1 to 7, wherein the conference system comprises a storage unit, a USB interface unit, a network communication unit and a microphone unit, the storage unit stores a standard audio file and a testing software module, the testing software module controls the USB interface unit to play the standard audio file, controls the microphone unit to collect external audio to generate an audio file, and controls the network communication unit to send the audio file to a computer-side audio testing tool for frequency response curve analysis.
9. A test system for the conference system of claim 8, wherein the test system comprises a standard speaker, a computer and a conference system, the standard speaker is connected to the conference system through USB, the conference system is connected to the computer through a network cable, and the computer runs the computer-side audio test tool to perform frequency response curve analysis.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111711915A (en) * | 2020-06-30 | 2020-09-25 | 深圳市科奈信科技有限公司 | Audio part selection method and audio part selection device thereof |
| CN112104949A (en) * | 2020-09-02 | 2020-12-18 | 北京字节跳动网络技术有限公司 | Method and device for detecting pickup assembly and electronic equipment |
| CN112133328A (en) * | 2020-08-03 | 2020-12-25 | 北京百度网讯科技有限公司 | Evaluation information generation method and device for audio data |
| CN115394279A (en) * | 2022-08-29 | 2022-11-25 | 歌尔科技有限公司 | Defective product detection method, device, equipment and computer readable storage medium |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101426167A (en) * | 2007-10-30 | 2009-05-06 | 中兴通讯股份有限公司 | Audio test system and method |
| CN101729969A (en) * | 2008-10-27 | 2010-06-09 | 纬创资通股份有限公司 | Method and system for testing microphone of electronic device |
| CN105979053A (en) * | 2016-04-18 | 2016-09-28 | 广东欧珀移动通信有限公司 | Method and device for detecting microphone in mobile terminal and mobile terminal |
| CN106303804A (en) * | 2016-07-28 | 2017-01-04 | 维沃移动通信有限公司 | The control method of a kind of mike and mobile terminal |
| CN107864444A (en) * | 2017-11-01 | 2018-03-30 | 大连理工大学 | A kind of microphone array frequency response calibration method |
| CN109168120A (en) * | 2018-11-16 | 2019-01-08 | 深圳市爱培科技术股份有限公司 | A kind of loudspeaker and microphone test method, intelligent terminal and storage medium |
| CN109195090A (en) * | 2018-09-05 | 2019-01-11 | 苏州思必驰信息科技有限公司 | Test method and system for microphone electro mechanical parameter in product |
| CN109275084A (en) * | 2018-09-12 | 2019-01-25 | 北京小米智能科技有限公司 | Test method, device, system, equipment and the storage medium of microphone array |
| CN109618273A (en) * | 2018-12-29 | 2019-04-12 | 北京声智科技有限公司 | The device and method of microphone quality inspection |
| CN109743665A (en) * | 2018-12-19 | 2019-05-10 | 深圳市潮流网络技术有限公司 | A kind of communication apparatus acoustic characteristic detection method |
| CN110087176A (en) * | 2019-05-22 | 2019-08-02 | 格云特自动化科技（深圳）有限公司 | Microphone multiband clock frequency response detection device |
-
2019
- 2019-12-31 CN CN201911411369.0A patent/CN111182434A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101426167A (en) * | 2007-10-30 | 2009-05-06 | 中兴通讯股份有限公司 | Audio test system and method |
| CN101729969A (en) * | 2008-10-27 | 2010-06-09 | 纬创资通股份有限公司 | Method and system for testing microphone of electronic device |
| CN105979053A (en) * | 2016-04-18 | 2016-09-28 | 广东欧珀移动通信有限公司 | Method and device for detecting microphone in mobile terminal and mobile terminal |
| CN106303804A (en) * | 2016-07-28 | 2017-01-04 | 维沃移动通信有限公司 | The control method of a kind of mike and mobile terminal |
| CN107864444A (en) * | 2017-11-01 | 2018-03-30 | 大连理工大学 | A kind of microphone array frequency response calibration method |
| CN109195090A (en) * | 2018-09-05 | 2019-01-11 | 苏州思必驰信息科技有限公司 | Test method and system for microphone electro mechanical parameter in product |
| CN109275084A (en) * | 2018-09-12 | 2019-01-25 | 北京小米智能科技有限公司 | Test method, device, system, equipment and the storage medium of microphone array |
| CN109168120A (en) * | 2018-11-16 | 2019-01-08 | 深圳市爱培科技术股份有限公司 | A kind of loudspeaker and microphone test method, intelligent terminal and storage medium |
| CN109743665A (en) * | 2018-12-19 | 2019-05-10 | 深圳市潮流网络技术有限公司 | A kind of communication apparatus acoustic characteristic detection method |
| CN109618273A (en) * | 2018-12-29 | 2019-04-12 | 北京声智科技有限公司 | The device and method of microphone quality inspection |
| CN110087176A (en) * | 2019-05-22 | 2019-08-02 | 格云特自动化科技（深圳）有限公司 | Microphone multiband clock frequency response detection device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111711915A (en) * | 2020-06-30 | 2020-09-25 | 深圳市科奈信科技有限公司 | Audio part selection method and audio part selection device thereof |
| CN111711915B (en) * | 2020-06-30 | 2021-11-05 | 深圳市科奈信科技有限公司 | Audio part selection method and audio part selection device thereof |
| CN112133328A (en) * | 2020-08-03 | 2020-12-25 | 北京百度网讯科技有限公司 | Evaluation information generation method and device for audio data |
| CN112104949A (en) * | 2020-09-02 | 2020-12-18 | 北京字节跳动网络技术有限公司 | Method and device for detecting pickup assembly and electronic equipment |
| CN115394279A (en) * | 2022-08-29 | 2022-11-25 | 歌尔科技有限公司 | Defective product detection method, device, equipment and computer readable storage medium |
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