CN111629316A - Monitoring method and monitoring system for continuous playing test of sound box - Google Patents
Monitoring method and monitoring system for continuous playing test of sound box Download PDFInfo
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- CN111629316A CN111629316A CN202010411605.5A CN202010411605A CN111629316A CN 111629316 A CN111629316 A CN 111629316A CN 202010411605 A CN202010411605 A CN 202010411605A CN 111629316 A CN111629316 A CN 111629316A
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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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Abstract
The invention discloses a monitoring method and a monitoring system for continuous playing test of a sound box, wherein the method comprises the following steps: 1) enabling a plurality of sound boxes to play the same test audio; 2) picking up sound of each sound box in real time to obtain an audio signal; 3) calculating the effective mean value of the sound pressure of the audio signal in unit time; 4) the system comprises a monitoring device and an intelligent terminal, wherein the monitoring device comprises a pickup module and is used for picking up sound of the sound box in real time to obtain an audio signal; the central processing module is used for calculating the effective mean value of the sound pressure of the audio signal in unit time and monitoring the playing state of the sound box; the communication module is used for sending the monitoring result to the intelligent terminal; the monitoring device is in communication connection with the intelligent terminal through the communication module. The invention can realize remote monitoring of the playing state of the sound box, effectively improve the accuracy of the test, improve the test efficiency and reduce the probability of hearing damage of a tester.
Description
Technical Field
The invention relates to the technical field of sound boxes, in particular to a monitoring method and a monitoring system for continuous playing test of a sound box.
Background
With the continuous development of science and technology, various electronic intelligent products enter the daily life of people, and the sound box plays an important role in the aspect of sound and video entertainment as an indispensable product in electronic products.
Before the loudspeaker box enters the market, tests can be carried out for countless times, and the quality of the loudspeaker box is ensured. When testing is performed on continuous audio playing of the sound boxes, particularly when the sound boxes perform continuous playing testing at the maximum volume at the same time, noisy sound affects normal work of peripheral personnel and also affects working efficiency of testers; moreover, a tester cannot keep beside the sound box to observe the state of the sound box, so that the tester cannot find the abnormal condition of the sound box at the first time easily, and the test accuracy is influenced; even more, when music is played at normal volume, continuous listening to music for more than 30 minutes is not recommended, and the listening loss of a tester is easily caused by long-term exposure to loud audio environment.
In view of the above problems, it is necessary to develop a monitoring method capable of remotely monitoring the continuous state of the sound box.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a monitoring method and a monitoring system for a continuous playing test of a sound box, which can realize remote monitoring of the playing state of the sound box, effectively improve the accuracy of the test, improve the testing efficiency, and reduce the probability of hearing damage of a tester.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a monitoring method for continuous playing test of sound boxes is based on a monitoring system and a plurality of sound boxes, wherein the monitoring system comprises a monitoring device and an intelligent terminal in communication connection with the monitoring device, and the method comprises the following steps:
1) enabling a plurality of sound boxes to play the same test audio;
2) the monitoring device collects sound for each sound box in real time to obtain an audio signal;
3) the monitoring device calculates the effective mean value of the sound pressure of the audio signal in unit time;
4) the monitoring device monitors the playing state of the sound box according to the effective mean value of the sound pressure and transmits a monitoring result to the intelligent terminal.
As a preferable scheme, the method for calculating the effective mean value of sound pressure of the audio signal per unit time comprises the following steps:
1) selecting a sampling frequency m;
2) setting unit time n;
3) obtaining the sound pressure value X for N times in unit time;
4) respectively carrying out quadratic treatment on the sound pressure values X obtained each time, then superposing the sound pressure values subjected to quadratic treatment to obtain a sum, dividing the sum by N to obtain a quotient, and finally squaring the quotient to obtain an effective mean value of the sound pressure;
wherein N = m × N.
Preferably, the formula for calculating the effective mean value of the sound pressure is as follows:
wherein, XrmsIs the effective mean value of sound pressure, X1、X2……XNFor the sound pressure value obtained by each sampling, N is the number of sampling times per unit time.
As a preferred scheme, the method for monitoring the playing state of the sound box according to the sound pressure effective mean value comprises the following steps:
1) the monitoring device judges whether the effective mean value of the sound pressure is smaller than a judgment threshold value, if so, the next step is carried out, and if not, the monitoring device judges that the sound box is not abnormal in playing;
2) the monitoring device judges that the effective average values of the sound pressure calculated for a plurality of times are smaller than a judgment threshold value, if so, the monitoring device judges that the sound box is abnormal in playing and records the time of the abnormal sound box playing, and if not, the monitoring device judges that the sound box is not abnormal in playing.
A monitoring system for continuous playing test of a sound box can realize the monitoring method, and comprises a monitoring device and an intelligent terminal, wherein the monitoring device comprises
The sound pickup module is used for picking up sound of the sound box in real time to obtain an audio signal;
the central processing module is used for calculating an effective mean value of sound pressure of the audio signal in unit time according to the audio signal and monitoring the playing state of the sound box according to the effective mean value of the sound pressure;
the communication module is used for being in communication connection with the intelligent terminal and sending the monitoring result to the intelligent terminal;
the monitoring device is in communication connection with the intelligent terminal through the communication module.
As a preferred scheme, the sound pickup module is a directional microphone.
As a preferred scheme, the communication module is a wireless communication module or a wired communication module.
As a preferred scheme, the monitoring system for the continuous playing test of the sound box further comprises a setting module for setting sampling frequency, unit time and a judgment threshold value and a statistical module for counting the monitoring result sent by the monitoring system, wherein the setting module and the statistical module are installed on the intelligent terminal in a software mode.
The invention has the beneficial effects that: the monitoring system and the method can realize remote monitoring of the playing state of the sound box, so that a tester can watch the sound box nearby to observe the state of the sound box to finish continuous playing test, and the probability of hearing damage of the tester can be effectively reduced; by the monitoring system and the method, whether the abnormal playing condition of the sound box occurs or not can be automatically judged, so that once the abnormal playing condition of the sound box occurs, the abnormal playing condition can be found at the first time, and the accuracy of the test result is effectively improved; the playing states of a plurality of sound boxes can be monitored simultaneously through the monitoring system and the method, so that the working efficiency of the test can be effectively improved.
Drawings
FIG. 1 is a schematic view of an assembly structure according to an embodiment of the present invention;
FIG. 2 is a flow chart of a method for monitoring a continuous playing test of a speaker according to the present invention;
FIG. 3 is a flowchart of a method for calculating an effective mean value of sound pressure of an audio signal per unit time according to the present invention;
FIG. 4 is a flowchart of a method for monitoring the playing status of a speaker according to the effective mean of sound pressure according to the present invention;
FIG. 5 is a flowchart of a method for setting a threshold according to the present invention.
In the figure: the method comprises the following steps of 1-sound pickup module, 2-central processing module, 3-communication module, 4-setting module, 5-statistical module, 6-monitoring device and 7-intelligent terminal.
Detailed Description
The structural and operational principles of the present invention are explained in further detail below with reference to the accompanying drawings.
As shown in fig. 1, a monitoring system for continuous playing test of a sound box comprises a monitoring device 6 and an intelligent terminal 7, wherein the monitoring device 6 comprises
The sound pickup module 1 is used for picking up sound of the sound box in real time to obtain an audio signal;
the central processing module 2 is used for calculating an effective mean value of sound pressure of the audio signal in unit time according to the audio signal and monitoring the playing state of the sound box according to the effective mean value of the sound pressure;
the communication module 3 is used for being in communication connection with the intelligent terminal 7 and sending a monitoring result to the intelligent terminal 7;
the monitoring device 6 is in communication connection with the intelligent terminal 7 through the communication module 3.
As a preferable scheme, the monitoring result includes time when the sound box starts playing, playing state of the sound box, and time when the sound box is abnormally played.
As a preferred scheme, pickup module 1 is directional microphone, so that the interference between each other caused by playing of a plurality of sound boxes can be reduced to the maximum extent, the pickup quality is effectively improved, and the accuracy of the test result is effectively improved.
As a preferable scheme, the communication module 3 is a wireless communication module or a wired communication module, and the wireless communication module is a WiFi module, a bluetooth module, a ZigBee module, or the like.
As a preferred scheme, the monitoring system for the continuous playing test of the sound box further comprises a setting module 4 for setting sampling frequency, unit time and a judgment threshold value, and a statistical module 5 for counting the monitoring result sent by the monitoring system, wherein the setting module 4 and the statistical module 5 are installed on an intelligent terminal 7 in a software manner.
The intelligent terminal 7 is a computer or a notebook computer.
As shown in fig. 2, a method for monitoring a continuous playing test of a sound box, based on the above monitoring system and a plurality of sound boxes, includes the following steps:
1) enabling a plurality of sound boxes to play the same test audio;
2) the sound pickup module 1 picks up sound of each sound box in real time to obtain an audio signal;
3) the central processing module 2 calculates the effective mean value of the sound pressure of the audio signal in unit time;
4) the central processing module 2 monitors the playing state of the sound box according to the effective mean value of the sound pressure and transmits the monitoring result to the intelligent terminal 7 through the communication module 3;
wherein, the pickup module 1 and the sound box are in one-to-one correspondence.
As shown in fig. 3, the method for calculating the effective mean value of sound pressure of the audio signal per unit time includes the following steps:
1) selecting a sampling frequency m;
2) setting unit time n;
3) obtaining the sound pressure value X for N times in unit time;
4) respectively carrying out quadratic treatment on the sound pressure values X obtained each time, then superposing the sound pressure values subjected to quadratic treatment to obtain a sum, dividing the sum by N to obtain a quotient, and finally squaring the quotient to obtain an effective mean value of the sound pressure;
wherein N = m × N.
Preferably, the formula for calculating the effective mean value of the sound pressure is as follows:
wherein, XrmsIs the effective mean value of sound pressure, X1、X2……XNFor the sound pressure value obtained by each sampling, N is the number of sampling times per unit time.
As shown in fig. 4, the method for monitoring the playing state of the sound box according to the sound pressure effective average value includes the following steps:
1) the central processing module 2 judges whether the effective mean value of the sound pressure is smaller than a judgment threshold value, if so, the next step is carried out, and if not, the central processing module 2 judges that the sound box is not abnormal in playing;
2) the central processing module 2 judges that the effective average values of the sound pressure calculated for a plurality of times are smaller than a judgment threshold value, if so, the central processing module 2 judges that the sound box is abnormal in playing and records the time of the abnormal sound box playing, and if not, the central processing module 2 judges that the sound box is not abnormal in playing;
wherein, a plurality of times are not less than three times, preferably 3-5 times.
As shown in fig. 5, the method for setting the judgment threshold based on the speaker and the monitoring system includes the following steps:
1) the sound box plays test audio;
2) the sound pickup module 1 picks up sound of the sound box to obtain a test signal;
3) the central processing module 2 calculates the effective mean value of the sound pressure of the test signal in unit time;
4) setting a judgment threshold value by an operator according to the effective mean value of the sound pressure obtained in the step 3);
wherein, the operator generally uses the lowest effective mean value of sound pressure in the whole test signal as the judgment threshold.
The invention has the beneficial effects that: the monitoring system and the method can realize remote monitoring of the playing state of the sound box, so that a tester can watch the sound box nearby to observe the state of the sound box to finish continuous playing test, and the probability of hearing damage of the tester can be effectively reduced; by the monitoring system and the method, whether the abnormal playing condition of the sound box occurs or not can be automatically judged, so that once the abnormal playing condition of the sound box occurs, the abnormal playing condition can be found at the first time, and the accuracy of the test result is effectively improved; the playing states of a plurality of sound boxes can be monitored simultaneously through the monitoring system and the method, so that the working efficiency of the test can be effectively improved.
The above description is only a preferred embodiment of the present invention, and all the minor modifications, equivalent changes and modifications made to the above embodiment according to the technical solution of the present invention are within the scope of the technical solution of the present invention.
Claims (8)
1. A monitoring method for continuous playing test of a sound box is characterized in that: based on a monitoring system and a plurality of sound boxes, the monitoring system comprises a monitoring device and an intelligent terminal in communication connection with the monitoring device, and the method comprises the following steps:
1) enabling a plurality of sound boxes to play the same test audio;
2) the monitoring device collects sound for each sound box in real time to obtain an audio signal;
3) the monitoring device calculates the effective mean value of the sound pressure of the audio signal in unit time;
4) the monitoring device monitors the playing state of the sound box according to the effective mean value of the sound pressure and transmits a monitoring result to the intelligent terminal.
2. The method for monitoring the continuous playing test of the loudspeaker box according to claim 1, wherein the method comprises the following steps: the method for calculating the effective mean value of the sound pressure of the audio signal in unit time comprises the following steps:
1) selecting a sampling frequency m;
2) setting unit time n;
3) obtaining the sound pressure value X for N times in unit time;
4) respectively carrying out quadratic treatment on the sound pressure values X obtained each time, then superposing the sound pressure values subjected to quadratic treatment to obtain a sum, dividing the sum by N to obtain a quotient, and finally squaring the quotient to obtain an effective mean value of the sound pressure;
wherein N = m × N.
3. The method for monitoring the continuous playing test of the loudspeaker box according to claim 2, wherein the method comprises the following steps: the calculation formula of the effective mean value of the sound pressure is as follows:
wherein, XrmsIs the effective mean value of sound pressure, X1、X2……XNFor the sound pressure value obtained by each sampling, N is the number of sampling times per unit time.
4. The method for monitoring the continuous playing test of the loudspeaker box according to claim 1, wherein the method comprises the following steps: the method for monitoring the playing state of the sound box according to the effective mean value of the sound pressure comprises the following steps:
1) the monitoring device judges whether the effective mean value of the sound pressure is smaller than a judgment threshold value, if so, the next step is carried out, and if not, the monitoring system judges that the sound box is not abnormal in playing;
2) the monitoring device judges that the effective average values of the sound pressure calculated for a plurality of times are smaller than a judgment threshold value, if so, the monitoring system judges that the sound box is abnormal in playing and records the time of the abnormal sound box playing, and if not, the monitoring system judges that the sound box is not abnormal in playing.
5. A monitoring system for continuous playing test of sound box, which can realize the monitoring method according to any one of claims 1-4, characterized in that: comprises a monitoring device and an intelligent terminal, wherein the monitoring device comprises
The sound pickup module is used for picking up sound of the sound box in real time to obtain an audio signal;
the central processing module is used for calculating an effective mean value of sound pressure of the audio signal in unit time according to the audio signal and monitoring the playing state of the sound box according to the effective mean value of the sound pressure;
the communication module is used for being in communication connection with the intelligent terminal and sending the monitoring result to the intelligent terminal;
the monitoring device is in communication connection with the intelligent terminal through the communication module.
6. The system for monitoring continuous playing test of sound box according to claim 5, wherein: the pickup module is a directional microphone.
7. The system for monitoring continuous playing test of sound box according to claim 5, wherein: the communication module is a wireless communication module or a wired communication module.
8. The system for monitoring continuous playing test of sound box according to claim 5, wherein: the intelligent terminal also comprises a setting module for setting sampling frequency, unit time and a judgment threshold value and a statistic module for counting the monitoring result sent by the monitoring system, wherein the setting module and the statistic module are installed on the intelligent terminal in a software mode.
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| CN112672266A (en) * | 2020-12-21 | 2021-04-16 | 北京云迹科技有限公司 | Abnormal sound box determination method and device |
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Application publication date: 20200904 |