CN110891236A - Method and device for realizing production test of multi-microphone array - Google Patents
Method and device for realizing production test of multi-microphone array Download PDFInfo
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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Abstract
The invention relates to the technical field of multi-microphone array production and measurement, and discloses a multi-microphone array production and measurement device which comprises a central control system and a silencing box, wherein a power amplifier is fixedly arranged in an inner cavity of the silencing box, a first loudspeaker is fixedly arranged on the right side of the power amplifier and positioned in the inner cavity of the silencing box, an MIC array positioned in the inner cavity of the silencing box is fixedly arranged at the top of the first loudspeaker, a data acquisition module is fixedly arranged on the left side of the MIC array and positioned in the inner cavity of the silencing box, and a second loudspeaker positioned in the inner cavity of the silencing box is fixedly arranged on the right side of the MIC array. According to the method and the device for realizing the production and measurement of the multi-microphone array, the first loudspeaker is closed and the second loudspeaker is opened, and similarly, the scanning signals are sent to the power amplifier through the central control system, wherein the number of MICs in the MIC array can be changed, the measurement method is unchanged, the overall detection effect is good, the abnormality and quality problems of the microphone can be effectively detected, the microphone is convenient to maintain and maintain, and the use of a user is convenient.
Description
Technical Field
The invention relates to the technical field of multi-microphone array production testing, in particular to a method and a device for realizing multi-microphone array production testing.
Background
In recent years, voice interaction products come into the market successively, mainly products such as AI voice interaction sound boxes and earphones are taken as main products, all major companies enter the field, companies such as Amazon, Google and apple have corresponding layouts, and voice interaction sound boxes are also successively released by association, Jingdong, Kodak news, millet and the like in China.
The main technology for realizing the voice interaction sound box is far-field voice recognition, a user can carry out voice interaction with the sound box outside 3-5 meters, a multi-microphone array noise reduction technology is needed for realizing the interaction, the far-field voice recognition is realized through multi-microphone beam forming, the multi-microphone technology has certain requirements on the microphone arrangement position, the microphone structure sealing and the like in the product realization process, meanwhile, the requirements on the quality of the microphones in the multi-microphone array are more important, so that the detection work needs to be carried out on the microphones in the microphone array, whether the microphones are abnormal or not can be effectively judged, the existing multi-microphone array product detection equipment has the defect of poor detection effect, the single microphone in the multi-microphone array cannot be effectively detected to have the problems of abnormality and quality, and the use is inconvenient for the user, therefore, the method and the device for realizing the production test of the multi-microphone array are provided.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a method and a device for realizing production test of a multi-microphone array, which have the advantages of effectively detecting whether a microphone is abnormal or not and the like, and solve the problems that the existing equipment for detecting the multi-microphone array product has the defect of poor detection effect, and the single microphone in the multi-microphone array cannot be effectively detected to have abnormal or quality problems, so that the use of a user is inconvenient.
(II) technical scheme
In order to realize the purpose of effectively detecting whether the microphone has abnormality or not, the invention provides the following technical scheme: the utility model provides a survey device is produced to many microphones array, includes central control system and whistle box, the inner chamber fixed mounting of whistle box has the power amplifier, and the right side of power amplifier and the inner chamber fixed mounting that is located the whistle box have a loudspeaker, and the top fixed mounting of a loudspeaker has the MIC array that is located the whistle box inner chamber, and the left side of MIC array and the inner chamber fixed mounting that is located the whistle box have a data acquisition module, the right side fixed mounting of MIC array has No. two loudspeaker that are located the whistle box inner chamber.
Preferably, the MIC array consists of an MIC array plate and an MIC, the MIC array plate is fixedly provided with the MIC, and the MIC array plate is fixed in the inner cavity of the sound insulation box through a clamp.
Preferably, the first horn is located right below the MIC array, and the second horn is located right to the right of the MIC array.
Preferably, the number of MICs within the MIC array is equal to the number of corresponding horns.
Preferably, the output of center control system is connected with the input electricity of power amplifier, the output of power amplifier is connected with the input electricity of a loudspeaker, the output of a loudspeaker and the input signal connection of MIC array, the output of MIC array is connected with the input electricity of data acquisition module, the output of data acquisition module is connected with the input electricity of center control system, the output of power amplifier is connected with the input electricity of No. two loudspeakers, the output of No. two loudspeakers and the input signal connection of MIC array.
Another technical problem to be solved by the present invention is to provide a method for implementing multi-microphone array production testing, comprising the following steps:
1) placing a power amplifier, a first loudspeaker, an MIC array, a second loudspeaker and a data acquisition module into the interior of a sound attenuation box, wherein the first loudspeaker is placed under the MIC array, the second loudspeaker is placed on the positive side of the MIC array, and more loudspeakers can be added according to the MIC number in the MIC array to carry out tests in different directions and angles;
2) the method comprises the steps that a scanning signal is sent through a central control system and is input into a power amplifier, the power amplifier receives the signal and then drives a loudspeaker I to play a frequency sweeping signal, after an MIC array fixed at a specific position receives a sound signal sent by the loudspeaker I, a plurality of MICs in the MIC array transmit the signal to a data acquisition module, and the data acquisition module is used for collecting audio information picked up by the MICs and integrating a plurality of MIC data and then transmitting the data to the central control system for analysis;
3) the central control system carries out frequency, amplitude and phase information operation according to sound data acquired by each MIC, judges whether the MIC in the MIC array successfully positions a sound source, whether the MIC is normal, whether the MIC is sealed well, whether nonlinearity is good and the like, continues to carry out the next round of test if the MIC meets the requirement, and requires to stop the test and carry out marking if the MIC does not meet the requirement;
4) stopping playing the first loudspeaker, starting the second loudspeaker, and similarly, sending a scanning signal through a central control system, inputting the signal into a power amplifier, driving the second loudspeaker to play a frequency sweeping signal after the power amplifier receives the signal, transmitting the signal to a data acquisition module by a plurality of MICs in an MIC array after the MIC array fixed at a specific position receives a sound signal sent by the second loudspeaker, and integrating a plurality of MIC data and transmitting the data to the central control system for analysis;
5) the central control system carries out frequency, amplitude and phase information operation according to the two times of sound data acquired by each MIC, and judges whether the MIC in the MIC array successfully positions a sound source, whether the MIC is normal, whether the MIC is sealed well, whether nonlinearity is good and the like, the MIC meeting the requirement indicates normal passing, the MIC not meeting the requirement indicates failing and needs to be marked, the number of the MICs in the MIC array can be changed, and the measurement method is unchanged.
(III) advantageous effects
Compared with the prior art, the invention provides a method and a device for realizing production test of a multi-microphone array, which have the following beneficial effects:
1. the method and the device for realizing the production test of the multi-microphone array are characterized in that a power amplifier, a first loudspeaker, an MIC array, a second loudspeaker and a data acquisition module are arranged in a silencing box, the silencing box can effectively reduce the influence of external environment noise and increase the precision of detection data, the number of the loudspeakers is matched with the number of MICs in the MIC array, the first loudspeaker is positioned right below the MIC array, other loudspeakers are arranged at proper positions horizontal to the MIC array according to the position of the MIC array, more loudspeakers can be added according to the number of the MIC array to test different angles, so that the precision of an MIC array test is improved, a scanning signal is sent to the power amplifier through a central control system, the power amplifier drives the first loudspeaker to play a frequency sweeping signal after receiving the signal, the MIC array fixed at a specific position receives a sound signal sent by the first loudspeaker, the signal is transmitted to the data acquisition module, the data acquisition module is used for collecting audio information picked up by MIC, and transmit a plurality of MIC data after integration to the central control system for analysis, the central control system carries out frequency according to the sound data that every MIC was gathered, the operation of amplitude and phase information, judge whether the MIC in the MIC array successfully locates the sound source, whether the MIC is normal, whether sealed and nonlinear good etc., the MIC that accords with the requirement continues to carry out the test of next round, the MIC that does not accord with the requirement then requires to stop the test and carry out the mark, realize the product detection work of microphone in the MIC array of first round, the detection effect is good, can effectually detect out single microphone in the multi-microphone array and have or not unusual and quality problem, conveniently maintain and maintain the microphone, and the convenience is provided for users to use.
2. The method and the device for realizing the production and test of the multi-microphone array are characterized in that a first loudspeaker is closed and a second loudspeaker is opened, similarly, a scanning signal is sent to a power amplifier through a central control system, the power amplifier drives the second loudspeaker to play a frequency sweeping signal after receiving the scanning signal, an MIC array fixed at a specific position receives a sound signal sent by the second loudspeaker and transmits the sound signal to a data acquisition module, the data acquisition module is used for collecting audio information picked up by an MIC and integrating a plurality of MIC data and then transmitting the integrated MIC data to the central control system for analysis, the central control system carries out frequency, amplitude and phase information operation according to the sound data collected by each MIC and judges whether the MIC in the MIC array successfully positions a sound source, whether the MIC is normal, whether the MIC is sealed, whether nonlinearity is good or not and the like, the MIC which meets the requirements indicates normal and passes, and the MIC which, the product detection work of microphone in the MIC array of whole realization second round, wherein MIC's quantity can change in the MIC array, and measuring method is unchangeable, and whole detection effect is good, can effectually detect out in the many microphone array that single microphone has or not unusual and quality problem, conveniently maintains and maintains the microphone, and the person of facilitating the use uses.
Drawings
FIG. 1 is a schematic structural diagram of a method and apparatus for implementing multi-microphone array production testing according to the present invention;
FIG. 2 is a system diagram of a method and apparatus for multi-microphone array production testing according to the present invention;
fig. 3 is a schematic flow chart of a method and an apparatus for implementing multi-microphone array production testing according to the present invention.
In the figure: the system comprises a central control system 1, a silencing box 2, a power amplifier 3, a loudspeaker 4I, an MIC array 5, a data acquisition module 6 and a loudspeaker 7 II.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.
Referring to fig. 1-2, a multi-microphone array production and measurement device includes a central control system 1 and a sound-muffling box 2, the sound-muffling box 2 can reduce the influence of external environment noise and increase the accuracy of measurement data, a power amplifier 3 is fixedly installed in the inner cavity of the sound-muffling box 2, the type of the power amplifier 3 can be SA1000, the power amplifier 3 is called a power amplifier for short, commonly called a "loud-speaker", which is the most basic device in the sound system, and is designed to amplify a weak electrical signal from a signal source to drive a speaker to make a sound, a first speaker 4 is fixedly installed on the right side of the power amplifier 3 and in the inner cavity of the sound-muffling box 2, the type of the first speaker 4 can be SBM210, the first speaker 4 is located right below the MIC array 5, an MIC array 5 located in the inner cavity of the sound-muffling box 2 is fixedly installed on the top of the first speaker 4, the MIC array, the MIC array plate is fixedly provided with the MIC, the MIC array plate is fixed in the inner cavity of the sound-muffling box 2 through a clamp, the MIC array 5 is fixed through setting the clamp, the MIC array 5 is conveniently taken down and replaced after the test is finished, the number of the MIC in the MIC array 5 is equal to the number of the corresponding loudspeakers, for example, the MIC array 5 comprises two MICs, a loudspeaker 4 is required to be ensured to be positioned under the MIC array, other loudspeakers are placed at proper positions horizontal to the MIC array 5 according to the position of the MIC array 5, more loudspeakers can be added according to the number of the MIC array 5 to test different angles, so that the test precision of the MIC array 5 is improved, the data acquisition module 6 is fixedly arranged on the left side of the MIC array 5 and in the inner cavity of the sound-muffling box 2, the type of the data acquisition module 6 can be DAC8552, the data acquisition is a bridge beam connected with the external physical world, the data acquisition module 6 is composed of other units such as a sensor, a controller and the like, the data acquisition card, the data acquisition module 6, a data acquisition instrument and the like are data acquisition tools, the data acquisition module 6 is a communication module based on a remote data acquisition module platform, a communication chip, a storage chip and the like are integrated on a circuit board, so that the data acquisition module has the functions of sending and receiving short messages through the remote data acquisition module platform, voice communication, data transmission and the like, a second loudspeaker 7 positioned in the inner cavity of the anechoic box 2 is fixedly arranged on the right side of the MIC array 5, the model of the second loudspeaker 7 can be SBM210, the second loudspeaker 7 is positioned right side of the MIC array 5, the output end of the central control system 1 is electrically connected with the input end of the power amplifier 3, the output end of the power amplifier 3 is electrically connected with the input end of the first loudspeaker 4, the output end of the first, the output end of the MIC array 5 is electrically connected with the input end of the data acquisition module 6, the output end of the data acquisition module 6 is electrically connected with the input end of the central control system 1, the output end of the power amplifier 3 is electrically connected with the input end of the second loudspeaker 7, and the output end of the second loudspeaker 7 is in signal connection with the input end of the MIC array 5.
Referring to fig. 3, another technical problem to be solved by the present invention is to provide a method for implementing multi-microphone array production testing, comprising the following steps:
1) placing a power amplifier 3, a first loudspeaker 4, an MIC array 5, a second loudspeaker 7 and a data acquisition module 6 into the interior of the sound muffling box 2, placing the first loudspeaker 4 under the MIC array 5, placing the second loudspeaker 7 at the positive side of the MIC array 5, and adding more loudspeakers according to the MIC number in the MIC array 5 to test in different directions and angles;
2) the central control system 1 sends scanning signals and inputs the signals into the power amplifier 3, the power amplifier 3 receives the signals and then drives the first loudspeaker 4 to play frequency sweeping signals, after the MIC array 5 fixed at a specific position receives sound signals sent by the first loudspeaker 4, a plurality of MICs in the MIC array 5 transmit the signals to the data acquisition module 6, and the data acquisition module 6 is used for collecting audio information collected by the MICs, integrating a plurality of MIC data and transmitting the integrated MIC data to the central control system 1 for analysis;
3) the central control system 1 carries out frequency, amplitude and phase information operation according to sound data acquired by each MIC, judges whether the MIC in the MIC array 5 successfully positions a sound source, whether the MIC is normal, whether the MIC is well sealed, whether nonlinearity is good and the like, continues to carry out the next round of test for the MIC which meets the requirement, and requires stopping the test and marking for the MIC which does not meet the requirement;
4) stopping playing the first loudspeaker 4, starting the second loudspeaker 7, and similarly, sending a scanning signal through the central control system 1, inputting the signal into the power amplifier 3, driving the second loudspeaker 7 to play the scanning signal after the power amplifier 3 receives the signal, after receiving the sound signal sent by the second loudspeaker 7, transmitting the signal to a data acquisition module 6 by a plurality of MICs in the MIC array 5 after the MIC array 5 fixed at a specific position receives the sound signal sent by the second loudspeaker 7, wherein the data acquisition module 6 is used for collecting audio information collected by the MICs, integrating a plurality of MIC data and transmitting the integrated MIC data to the central control system 1 for analysis;
5) the central control system 1 carries out frequency, amplitude and phase information operation according to two times of sound data collected by each MIC, judge whether the MIC in the MIC array 5 successfully positions a sound source, whether the MIC is normal, whether the MIC is sealed well, whether nonlinearity is good, and the like, the MIC meeting the requirements indicates normal passing, the MIC not meeting the requirements indicates not passing and needs to be marked, the number of the MIC in the MIC array 5 can be changed, the measuring method is unchanged, the overall detection effect is good, the single microphone in the multi-microphone array can be effectively detected to have abnormity and quality problems, the microphone can be conveniently maintained and maintained, and the use of a user is facilitated.
The invention has the beneficial effects that: the method and the device for realizing the production and the test of the multi-microphone array are characterized in that a power amplifier 3, a first loudspeaker 4, an MIC array 5, a second loudspeaker 7 and a data acquisition module 6 are placed in a sound-absorbing box 2, the sound-absorbing box 2 can effectively reduce the influence of external environment noise and increase the precision of test data, the quantity of the loudspeakers is matched with the quantity of MICs in the MIC array 5, the first loudspeaker 4 is positioned right below the MIC array, other loudspeakers are placed at proper positions horizontal to the MIC array 5 according to the position of the MIC array 5, more loudspeakers can be added according to the quantity of the MIC array 5 to test different angles, so that the precision of a test to the MIC array 5 is improved, a scanning signal is sent to the power amplifier 3 through a central control system 1, the power amplifier 3 drives the first loudspeaker 4 to play a signal after receiving the signal, the MIC array 5 fixed at a specific position receives a sound signal sent by the first loudspeaker 4, with signal transmission to data acquisition module 6, data acquisition module 6 is used for collecting the audio information that MIC picked up, and transmit after integrating a plurality of MIC data and carry out the analysis for center control system 1, center control system 1 carries out the frequency according to the sound data that every MIC was gathered, the operation of amplitude and phase information, judge whether MIC in MIC array 5 successfully locates the sound source, whether MIC is normal, whether sealed good and nonlinear good etc. whether, the MIC that accords with the requirement continues to carry out the test of next round, the MIC that does not accord with the requirement requires to stop the test and carry out the mark, realize the product detection work of microphone in the MIC array 5 of first round, detection effect is good, can effectually detect out that single microphone has in the multi-microphone array has or not unusual and quality problem, conveniently maintain and maintain the microphone, convenience is used by the user.
And, through closing the loudspeaker 4 and opening the loudspeaker 7, the same, send the scanning signal to the power amplifier 3 through the central control system 1, the power amplifier 3 drives the loudspeaker 7 of the second number to carry on the broadcast work of the frequency sweep signal after receiving the signal, after the MIC array 5 fixed in the particular position receives the acoustic signal that the loudspeaker 7 of the second number sends, transmit the signal to the data acquisition module 6, the data acquisition module 6 is used for collecting the audio information that MIC picks up, and transmit the data integration of multiple MICs to the central control system 1 to analyze, the central control system 1 carries on the operation of frequency, amplitude and phase place information according to each MIC sound data that MIC gathers, judge whether MIC in the array 5 positions the sound source successfully, whether MIC is normal, whether it is good and whether the nonlinearity is good, etc., MIC meeting the requirement indicates normal and passes, MIC not meeting the requirement indicates that it does not pass and needs to mark, the product detection work of the microphones in the MIC array 5 of the second round is integrally realized, wherein the number of the MICs in the MIC array 5 can be changed, the measurement method is unchanged, the integral detection effect is good, the abnormity and quality problems of a single microphone in a multi-microphone array can be effectively detected, the microphones are conveniently maintained and maintained, and the microphone detection device is convenient for a user to use.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a device is produced and surveyed to many microphones array, includes central control system (1) and whistle box (2), its characterized in that, the inner chamber fixed mounting of whistle box (2) has power amplifier (3), and the right side of power amplifier (3) and the inner chamber fixed mounting that is located whistle box (2) have loudspeaker (4) No. one, and the top fixed mounting of loudspeaker (4) has MIC array (5) that are located whistle box (2) inner chamber, and the left side of MIC array (5) and the inner chamber fixed mounting that is located whistle box (2) have data acquisition module (6), the right side fixed mounting of MIC array (5) has loudspeaker (7) No. two that are located whistle box (2) inner chamber.
2. The multi-microphone array production test device according to claim 1, wherein the MIC array (5) is composed of a MIC array plate and a MIC, the MIC array plate is fixedly provided with the MIC, and the MIC array plate is fixed in the inner cavity of the anechoic box (2) through a clamp.
3. A multi-microphone array production and measurement device according to claim 1, wherein the first horn (4) is located directly below the MIC array (5) and the second horn (7) is located directly to the right of the MIC array (5).
4. A multi-microphone array production and measurement device according to claim 1, wherein the number of MICs within the MIC array (5) is equal to the number of corresponding loudspeakers.
5. The device of claim 1, wherein the output end of the central control system (1) is electrically connected with the input end of a power amplifier (3), the output end of the power amplifier (3) is electrically connected with the input end of a first loudspeaker (4), the output end of the first loudspeaker (4) is in signal connection with the input end of the MIC array (5), the output end of the MIC array (5) is electrically connected with the input end of the data acquisition module (6), the output end of the data acquisition module (6) is electrically connected with the input end of the central control system (1), the output end of the power amplifier (3) is electrically connected with the input end of a second loudspeaker (7), and the output end of the second loudspeaker (7) is in signal connection with the input end of the MIC array (5).
6. A method for realizing production measurement of a multi-microphone array is characterized by comprising the following steps:
1) placing a power amplifier (3), a first loudspeaker (4), an MIC array (5), a second loudspeaker (7) and a data acquisition module (6) into the interior of the sound muffling box (2), wherein the first loudspeaker (4) is placed under the MIC array (5), the second loudspeaker (7) is placed on the positive side of the MIC array (5), and more loudspeakers can be added according to the MIC number in the MIC array (5) to test in different directions and angles;
2) the method comprises the steps that a scanning signal is sent through a central control system (1) and is input into a power amplifier (3), the power amplifier (3) drives a first loudspeaker (4) to play a frequency sweeping signal after receiving the signal, after an MIC array (5) fixed at a specific position receives a sound signal sent by the first loudspeaker (4), a plurality of MICs in the MIC array (5) transmit the signal to a data acquisition module (6), and the data acquisition module (6) is used for collecting audio information collected by the MICs and transmitting the collected audio information to the central control system (1) for analysis after integrating a plurality of MIC data;
3) the central control system (1) carries out frequency, amplitude and phase information operation according to sound data acquired by each MIC, judges whether the MIC in the MIC array (5) successfully positions a sound source, whether the MIC is normal, whether the MIC is sealed well, whether nonlinearity is good and the like, continues to carry out the next round of test for the MIC which meets the requirement, and requires to stop the test and carry out marking for the MIC which does not meet the requirement;
4) stopping playing the first loudspeaker (4), starting the second loudspeaker (7), and in the same way, sending a scanning signal through the central control system (1), inputting the signal into the power amplifier (3), driving the second loudspeaker (7) to play a frequency sweeping signal after the power amplifier (3) receives the signal, transmitting the signal to the data acquisition module (6) by a plurality of MICs in the MIC array (5) after the MIC array (5) fixed at a specific position receives a sound signal sent by the second loudspeaker (7), and transmitting the audio information acquired by the MICs to the central control system (1) for analysis after integrating a plurality of MIC data;
5) the central control system (1) carries out frequency, amplitude and phase information operation according to the two times of sound data collected by each MIC, judges whether the MIC in the MIC array (5) successfully positions a sound source, whether the MIC is normal, whether the MIC is sealed well, whether nonlinearity is good and the like, if the MIC meets the requirement, the MIC is normal and passes, if the MIC does not meet the requirement, the MIC does not pass and needs to be marked, the number of the MICs in the MIC array (5) can be changed, and the measuring method is unchanged.
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| CN111953967A (en) * | 2020-08-14 | 2020-11-17 | 杭州视洞科技有限公司 | Method for automatically testing microphone and loudspeaker of network camera |
| CN114141224A (en) * | 2021-11-30 | 2022-03-04 | 北京百度网讯科技有限公司 | Signal processing method and device, electronic equipment and computer readable medium |
| CN115604613A (en) * | 2022-12-01 | 2023-01-13 | 杭州兆华电子股份有限公司（Cn） | Sound interference elimination method based on sound insulation box |
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