CN113596698A - Microphone reception monitoring device and method - Google Patents
Microphone reception monitoring device and method Download PDFInfo
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- CN113596698A CN113596698A CN202110759606.3A CN202110759606A CN113596698A CN 113596698 A CN113596698 A CN 113596698A CN 202110759606 A CN202110759606 A CN 202110759606A CN 113596698 A CN113596698 A CN 113596698A
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Abstract
The invention discloses a microphone reception monitoring device and a method, wherein the device comprises: the acquisition module is used for acquiring a target sound signal received by a target microphone; the comparison module is used for confirming the target signal intensity of the target sound signal, comparing the target signal intensity with a preset signal intensity and obtaining a comparison result; the judging module is used for judging the use state of the target microphone according to the comparison result; and the evaluation module is used for acquiring the current signal frequency of the target sound signal when the use state of the target microphone is normal, and confirming the sound receiving state of the target microphone according to the current signal frequency. Whether the target microphone is in a normal use state or not is judged by the judgment module, so that the condition that the microphone is in a normal state and is mistakenly identified as a scrapped microphone can be avoided, the cost is effectively saved, whether the target microphone is abnormal in sound or not is comprehensively evaluated from the perspective of parameters of sound signals, and the evaluation accuracy is improved.
Description
Technical Field
The invention relates to the technical field of microphone intelligent monitoring, in particular to a microphone sound reception monitoring device and method.
Background
In recent years, the network live broadcast and network video industries are rapidly developed, and the wireless microphone plays an increasingly important role in the network live broadcast and network video industries. Especially, with the development of big data and internet of things, higher requirements are put forward on a wireless microphone, and the wireless microphone can be applied to various places such as wedding, conference, live broadcast and the like, but with the difference of the use strength of the wireless microphone in different occasions, the service life of the wireless microphone is different, the existing method for judging the normal state of the microphone is to judge whether the microphone is scrapped or not by monitoring whether the microphone can sound smoothly, but the method has the following defects: because hardware damage related to sound generation and sound reception in the microphone can cause the microphone to be incapable of sound generation and have dysfunction, but the working state of the microphone is normal at the moment, the situation of misjudgment occurs, and the cost is increased.
Disclosure of Invention
In view of the above-mentioned problems, the present invention provides a microphone sound reception monitoring apparatus and method to solve the problems mentioned in the background art that the hardware damage related to the sound generation and the sound reception in the microphone may cause the microphone to fail to generate sound and the function to be obstructed, but the working state of the microphone is normal, so that the misjudgment occurs, and the cost is increased.
A microphone reception monitoring apparatus, the apparatus comprising:
the acquisition module is used for acquiring a target sound signal received by a target microphone;
the comparison module is used for confirming the target signal intensity of the target sound signal, comparing the target signal intensity with a preset signal intensity and obtaining a comparison result;
the judging module is used for judging the use state of the target microphone according to the comparison result;
and the evaluation module is used for acquiring the current signal frequency of the target sound signal when the use state of the target microphone is normal, and confirming the sound receiving state of the target microphone according to the current signal frequency.
Preferably, the acquisition module includes:
the acquisition submodule is used for acquiring a first target sound signal received by a target microphone within a preset time length;
the preprocessing submodule is used for preprocessing the first target sound signal to obtain a second target sound signal, and the second target sound signal is the preprocessed first target sound signal;
the first obtaining submodule is used for obtaining an energy value change curve of the second target sound signal and an interval time difference sequence of the second target sound signal;
the first confirming submodule is used for confirming whether the second target signal is a noise signal or not through an energy value change curve and an interval time difference sequence of the second target sound signal, if so, the second target sound signal is confirmed to be invalid, and otherwise, the second target sound signal is confirmed to be valid;
the acquisition submodule is further configured to acquire a target sound signal subsequently received by a target microphone when the second target sound signal is confirmed to be valid.
Preferably, the comparing module includes:
the cutting submodule is used for cutting the target sound signal into a plurality of sections of third sound signals;
the first calculation submodule is used for acquiring the frequency band of each section of the third sound signal and calculating the signal-to-noise ratio between the frequency band of each section of the third sound signal and the background noise of the environment where the target microphone is located;
the second confirming submodule is used for confirming the target signal intensity of the target sound signal according to the signal-to-noise ratio of each section of the third sound signal;
and the first comparison submodule is used for receiving the preset target signal intensity, comparing the target signal intensity with the preset signal intensity and acquiring a comparison result.
Preferably, the judging module includes:
the first judgment sub-module is used for judging that the use state of the target microphone is abnormal when the comparison result is that the target signal intensity is smaller than the preset signal intensity, and preliminarily judging that the use state of the target microphone is normal when the comparison result is that the target signal intensity is larger than or equal to the preset signal intensity;
the test submodule is used for performing index test on the target sound signal to obtain a test result when the use state of the target microphone is judged to be normal preliminarily;
the second comparison submodule is used for comparing the current index test value in the test result with a preset index test value, and when the current index test value is greater than or equal to the preset index test value, the target sound signal is determined to have no interruption, otherwise, the target sound signal is determined to have interruption;
and the second judging submodule is used for further judging that the use state of the target microphone is normal when the target sound signal is confirmed to be uninterrupted, and judging that the use state of the target microphone is abnormal when the target sound signal is confirmed to be interrupted.
Preferably, the evaluation module includes:
the second acquisition submodule is used for acquiring the time length and the frequency division multiple of the target sound signal in a preset level state;
the second calculation submodule is used for calculating the current signal frequency of the target sound signal according to the time length of the target sound signal in a preset level state and the frequency division multiple;
the third obtaining submodule is used for obtaining a sound energy value corresponding to the current signal frequency of the target sound signal from a preset database according to the current signal frequency of the target sound signal;
and the evaluation submodule is used for determining whether the sound energy value is greater than or equal to a preset threshold value, if so, evaluating that the sound receiving state of the target microphone is normal, and otherwise, evaluating that the sound receiving state of the target microphone is abnormal.
Preferably, the acquisition module further comprises:
the third confirming submodule is used for confirming a sound source pronunciation signal relative to the target microphone according to the background noise of the environment where the target microphone is located and the target sound signal;
the drawing submodule is used for drawing a comparison oscillogram of the pronunciation signal and the target sound signal;
the fourth confirming submodule is used for confirming the distortion condition of the target sound signal according to the comparison oscillogram;
and the eliminating submodule is used for selecting a signal section with an interference signal from the target sound signal according to the distortion condition and eliminating the interference signal from the signal section.
Preferably, the apparatus further comprises:
the monitoring module is used for monitoring RSSI (received signal strength indicator) information and SNR (signal to noise ratio) information of a target environment where the target microphone is located;
the analysis module is used for analyzing a smooth RSSI parameter and a smooth SNR parameter of the target environment according to the RSSI information and the SNR information;
the analysis module is used for analyzing the interference factor of the noise signal in the target environment to the target sound signal received by the target microphone according to the smooth RSSI parameter and the smooth SNR parameter of the target environment;
and the de-drying module is used for determining comprehensive sound quality parameters of the target sound signals according to the interference factors and de-noising the target sound signals according to the comprehensive sound quality parameters.
Preferably, the acquisition sub-module includes: the detection unit is used for detecting a target electroacoustic parameter of the target microphone and judging whether the target electroacoustic parameter is qualified or not, and the judging step comprises the following steps:
performing sound receiving characteristic analysis on a sound receiving unit arranged in the target microphone to obtain a current sound receiving sensitivity curve of the target microphone;
comparing the current radio sensitivity curve with a standard radio sensitivity curve to obtain a difference value;
determining a target microphone array of a target microphone according to the difference value;
generating a radio reception test signal of a target microphone based on the target microphone array;
generating expected sound receiving parameters of a target microphone according to the sound receiving test signals;
generating a recording instruction according to the radio reception test signal, and transmitting the recording instruction to a control unit of a target microphone;
detecting an acoustoelectric response signal of the target microphone when the target microphone collects sound;
filtering the acoustoelectric response signal to obtain a frequency curve and a phase curve corresponding to the acoustoelectric response signal;
processing the frequency curve and the phase curve to obtain a harmonic distortion curve and an impedance curve of the acoustoelectric response signal;
analyzing according to the harmonic distortion curve and the impedance curve to obtain the actual sound receiving parameters of the target microphone;
constructing characteristic matrixes of the expected radio receiving parameters and the actual radio receiving parameters respectively;
comparing the characteristic matrixes of the two matrixes, and screening to obtain a plurality of matrix factors with two matrixes different;
acquiring an operating parameter value of the target microphone, and constructing a nonlinear space state model of the target microphone according to the operating parameter value of the target microphone;
acquiring a parameter value corresponding to each matrix factor, and inputting the parameter value corresponding to each matrix factor into the nonlinear space state model;
carrying out self-adaptive calculation on each input parameter value by utilizing a preset nonlinear function in the nonlinear space state model to obtain a nonlinear compensation parameter value corresponding to the parameter value;
fusing the plurality of nonlinear compensation parameter values to obtain a target electroacoustic parameter of a target microphone;
and judging whether the target electroacoustic parameter meets the preset sound receiving requirement, if so, judging that the target electroacoustic parameter is qualified without subsequent operation, otherwise, judging that the target electroacoustic parameter is unqualified, and sending a prompt for changing the preset sound receiving parameter of the target microphone to a user.
A microphone reception monitoring method comprises the following steps:
collecting a target sound signal received by a target microphone;
confirming the target signal intensity of the target sound signal, and comparing the target signal intensity with a preset signal intensity to obtain a comparison result;
judging the use state of the target microphone according to the comparison result;
and when the use state of the target microphone is normal, acquiring the current signal frequency of the target sound signal, and determining the sound receiving state of the target microphone according to the current signal frequency.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
Fig. 1 is a schematic structural diagram of a microphone receiving and monitoring device provided by the present invention;
fig. 2 is a schematic structural diagram of an acquisition module in a microphone reception monitoring apparatus according to the present invention;
fig. 3 is a schematic structural diagram of a comparison module in a microphone sound reception monitoring apparatus according to the present invention;
fig. 4 is a flowchart illustrating a microphone reception monitoring method according to the present invention.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
In recent years, the network live broadcast and network video industries are rapidly developed, and the wireless microphone plays an increasingly important role in the network live broadcast and network video industries. Especially, with the development of big data and internet of things, higher requirements are put forward on a wireless microphone, and the wireless microphone can be applied to various places such as wedding, conference, live broadcast and the like, but with the difference of the use strength of the wireless microphone in different occasions, the service life of the wireless microphone is different, the existing method for judging the normal state of the microphone is to judge whether the microphone is scrapped or not by monitoring whether the microphone can sound smoothly, but the method has the following defects: because the hardware damage related to the pronunciation and the reception in the microphone can cause the microphone to be incapable of pronouncing and the function to be obstructed, but the working state of the microphone at the moment is normal, the occurrence of the condition of misjudgment occurs, and the cost is increased.
A microphone sound reception monitoring apparatus, as shown in fig. 1, the apparatus comprising:
the acquisition module 101 is used for acquiring a target sound signal received by a target microphone;
the comparison module 102 is configured to determine a target signal strength of the target sound signal, compare the target signal strength with a preset signal strength, and obtain a comparison result;
a judging module 103, configured to judge a use state of a target microphone according to the comparison result;
and the evaluation module 104 is configured to, when the usage state of the target microphone is normal, acquire the current signal frequency of the target sound signal, and determine the sound receiving state of the target microphone according to the current signal frequency.
The working principle of the technical scheme is as follows: the method comprises the steps of collecting a target sound signal received by a target microphone by using a collection module, confirming the target signal intensity of the target sound signal by using a comparison module, comparing the target signal intensity with a preset signal intensity to obtain a comparison result, judging the use state of the target microphone by using a judgment module according to the comparison result, finally obtaining the current signal frequency of the target sound signal by using an evaluation module when the use state of the target microphone is normal, and confirming the radio reception state of the target microphone according to the current signal frequency.
The beneficial effects of the above technical scheme are: the judgment module is arranged to judge whether the target microphone is in a normal use state, so that the condition that the microphone is mistakenly identified as a scrapped microphone due to the fact that the microphone is in a normal state can be avoided, cost is effectively saved, furthermore, the evaluation module is arranged to evaluate the sound receiving state of the target microphone according to the signal frequency of the sound signal detected by the target microphone, so that whether the sound of the target microphone is abnormal or not can be comprehensively evaluated from the angle of the parameters of the sound signal, and the evaluation accuracy is improved. The problem of in the prior art because the microphone sets up in the microphone and the hardware damage that is correlated with pronunciation and radio reception can lead to the microphone can't pronounce and the function appears the obstacle, but the microphone operating condition at this moment is normal, so the emergence of the wrong judgement condition appears, has improved the cost is solved.
In one embodiment, as shown in fig. 2, the acquisition module includes:
the acquisition submodule 1011 is used for acquiring a first target sound signal received by a target microphone within a preset time length;
a preprocessing submodule 1012, configured to preprocess the first target sound signal to obtain a second target sound signal, where the second target sound signal is the preprocessed first target sound signal;
a first obtaining sub-module 1013 configured to obtain an energy value change curve of the second target sound signal and an interval time difference sequence of the second target sound signal;
the first confirming submodule 1014 is used for confirming whether the second target sound signal is a noise signal or not by using an energy value change curve and an interval time difference sequence of the second target sound signal, if so, confirming that the second target sound signal is invalid, otherwise, confirming that the second target sound signal is valid;
the acquisition submodule is further configured to acquire a target sound signal subsequently received by a target microphone when the second target sound signal is confirmed to be valid.
The beneficial effects of the above technical scheme are: the detected sound signal can be effectively identified and identified by judging whether the second target signal is a noise signal, the situations of missed identification and missed detection of the sound signal are avoided, and the stability is effectively improved.
In one embodiment, as shown in fig. 3, the comparing module includes:
a cutting sub-module 1021 for cutting the target sound signal into a plurality of sections of a third sound signal;
the first calculating submodule 1022 is configured to obtain a frequency band of each third sound signal, and calculate a signal-to-noise ratio between the frequency band of each third sound signal and background noise of an environment where the target microphone is located;
a second confirming submodule 1023, configured to confirm the target signal strength of the target sound signal according to the signal-to-noise ratio of each segment of the third sound signal;
the first comparing submodule 1024 is configured to receive a preset target signal strength, compare the target signal strength with the preset signal strength, and obtain a comparison result.
The beneficial effects of the above technical scheme are: by determining the signal strength of the target sound signal according to the signal-to-noise ratio, the signal strength corresponding to the target sound signal can be accurately obtained under the condition that the influence of noise in the sound signal is considered, and the accuracy is improved.
In one embodiment, the determining module includes:
the first judgment sub-module is used for judging that the use state of the target microphone is abnormal when the comparison result is that the target signal intensity is smaller than the preset signal intensity, and preliminarily judging that the use state of the target microphone is normal when the comparison result is that the target signal intensity is larger than or equal to the preset signal intensity;
the test submodule is used for performing index test on the target sound signal to obtain a test result when the use state of the target microphone is judged to be normal preliminarily;
the second comparison submodule is used for comparing the current index test value in the test result with a preset index test value, and when the current index test value is greater than or equal to the preset index test value, the target sound signal is determined to have no interruption, otherwise, the target sound signal is determined to have interruption;
and the second judging submodule is used for further judging that the use state of the target microphone is normal when the target sound signal is confirmed to be uninterrupted, and judging that the use state of the target microphone is abnormal when the target sound signal is confirmed to be interrupted.
The beneficial effects of the above technical scheme are: whether the use state of the target microphone is normal or not can be comprehensively evaluated from multiple angles by judging whether the use state of the target microphone is normal or not in a grading manner, so that the accuracy and the objectivity of the evaluation result are improved.
In one embodiment, the evaluation module comprises:
the second acquisition submodule is used for acquiring the time length and the frequency division multiple of the target sound signal in a preset level state;
the second calculation submodule is used for calculating the current signal frequency of the target sound signal according to the time length of the target sound signal in a preset level state and the frequency division multiple;
the third obtaining submodule is used for obtaining a sound energy value corresponding to the current signal frequency of the target sound signal from a preset database according to the current signal frequency of the target sound signal;
and the evaluation submodule is used for determining whether the sound energy value is greater than or equal to a preset threshold value, if so, evaluating that the sound receiving state of the target microphone is normal, and otherwise, evaluating that the sound receiving state of the target microphone is abnormal.
The beneficial effects of the above technical scheme are: whether the sound receiving state of the target microphone is normal or not is judged according to the sound energy value corresponding to the current signal frequency of the target sound signal, so that whether the received sound signal is a problem or a problem of a target microphone sound receiving system is determined from the viewpoint of analyzing the target sound signal, and the judgment accuracy is improved.
In one embodiment, the acquisition module further comprises:
the third confirming submodule is used for confirming a sound source pronunciation signal relative to the target microphone according to the background noise of the environment where the target microphone is located and the target sound signal;
the drawing submodule is used for drawing a comparison oscillogram of the pronunciation signal and the target sound signal;
the fourth confirming submodule is used for confirming the distortion condition of the target sound signal according to the comparison oscillogram;
and the eliminating submodule is used for selecting a signal section with an interference signal from the target sound signal according to the distortion condition and eliminating the interference signal from the signal section.
The beneficial effects of the above technical scheme are: interference signals in the target sound signals are removed, so that the follow-up judgment on the sound receiving condition of the target microphone can be ensured to provide more reasonable and practical data signals, and the judgment accuracy on the sound receiving performance of the target microphone can be further improved.
In one embodiment, the apparatus further comprises:
the monitoring module is used for monitoring RSSI (received signal strength indicator) information and SNR (signal to noise ratio) information of a target environment where the target microphone is located;
the analysis module is used for analyzing a smooth RSSI parameter and a smooth SNR parameter of the target environment according to the RSSI information and the SNR information;
the analysis module is used for analyzing the interference factor of the noise signal in the target environment to the target sound signal received by the target microphone according to the smooth RSSI parameter and the smooth SNR parameter of the target environment;
and the de-drying module is used for determining comprehensive sound quality parameters of the target sound signals according to the interference factors and de-noising the target sound signals according to the comprehensive sound quality parameters.
The beneficial effects of the above technical scheme are: whether the target sound signal is mixed with the noise signal can be effectively and reasonably evaluated according to the comprehensive sound quality parameter of the target sound signal by determining the comprehensive sound quality parameter of the target sound signal, so that the noise signal in the target sound signal can be rapidly denoised, and the normalization of sample data is further ensured for the subsequent evaluation of the sound receiving performance of the target microphone.
In one embodiment, the acquisition submodule includes: the detection unit is used for detecting a target electroacoustic parameter of the target microphone and judging whether the target electroacoustic parameter is qualified or not, and the judging step comprises the following steps:
performing sound receiving characteristic analysis on a sound receiving unit arranged in the target microphone to obtain a current sound receiving sensitivity curve of the target microphone;
comparing the current radio sensitivity curve with a standard radio sensitivity curve to obtain a difference value;
determining a target microphone array of a target microphone according to the difference value;
generating a radio reception test signal of a target microphone based on the target microphone array;
generating expected sound receiving parameters of a target microphone according to the sound receiving test signals;
generating a recording instruction according to the radio reception test signal, and transmitting the recording instruction to a control unit of a target microphone;
detecting an acoustoelectric response signal of the target microphone when the target microphone collects sound;
filtering the acoustoelectric response signal to obtain a frequency curve and a phase curve corresponding to the acoustoelectric response signal;
processing the frequency curve and the phase curve to obtain a harmonic distortion curve and an impedance curve of the acoustoelectric response signal;
analyzing according to the harmonic distortion curve and the impedance curve to obtain the actual sound receiving parameters of the target microphone;
constructing characteristic matrixes of the expected radio receiving parameters and the actual radio receiving parameters respectively;
comparing the characteristic matrixes of the two matrixes, and screening to obtain a plurality of matrix factors with two matrixes different;
acquiring an operating parameter value of the target microphone, and constructing a nonlinear space state model of the target microphone according to the operating parameter value of the target microphone;
acquiring a parameter value corresponding to each matrix factor, and inputting the parameter value corresponding to each matrix factor into the nonlinear space state model;
carrying out self-adaptive calculation on each input parameter value by utilizing a preset nonlinear function in the nonlinear space state model to obtain a nonlinear compensation parameter value corresponding to the parameter value;
fusing the plurality of nonlinear compensation parameter values to obtain a target electroacoustic parameter of a target microphone;
and judging whether the target electroacoustic parameter meets the preset sound receiving requirement, if so, judging that the target electroacoustic parameter is qualified without subsequent operation, otherwise, judging that the target electroacoustic parameter is unqualified, and sending a prompt for changing the preset sound receiving parameter of the target microphone to a user.
The beneficial effects of the above technical scheme are: the method has the advantages that whether the preset sound receiving parameters of the target microphone can be effectively evaluated to accurately receive the external sound signals or not by obtaining the electroacoustic parameters of the target microphone and judging whether the electroacoustic parameters are qualified or not, so that the smooth operation of the subsequent acquisition submodule on sound signal acquisition is ensured, the stability is improved, furthermore, the electroacoustic parameters of the target microphone are obtained by utilizing a matrix and model mode, the acquired data can be ensured to be more accurate and accord with the reality, meanwhile, the fault tolerance rate and the judgment rate are greatly improved, and the working stability is further improved.
The embodiment also discloses a microphone reception monitoring method, as shown in fig. 4, including the following steps:
step S101, collecting a target sound signal received by a target microphone;
step S102, confirming the target signal intensity of the target sound signal, comparing the target signal intensity with a preset signal intensity, and obtaining a comparison result;
step S103, judging the use state of the target microphone according to the comparison result;
and step S104, when the use state of the target microphone is normal, acquiring the current signal frequency of the target sound signal, and confirming the sound receiving state of the target microphone according to the current signal frequency.
The working principle and the advantageous effects of the technical solution are already described in the device claims, and are not described herein again.
It will be understood by those skilled in the art that the first and second terms of the present invention refer to different stages of application.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (9)
1. A microphone reception monitoring device, the device comprising:
the acquisition module is used for acquiring a target sound signal received by a target microphone;
the comparison module is used for confirming the target signal intensity of the target sound signal, comparing the target signal intensity with a preset signal intensity and obtaining a comparison result;
the judging module is used for judging the use state of the target microphone according to the comparison result;
and the evaluation module is used for acquiring the current signal frequency of the target sound signal when the use state of the target microphone is normal, and confirming the sound receiving state of the target microphone according to the current signal frequency.
2. The microphone radio monitoring device of claim 1, wherein the collection module comprises:
the acquisition submodule is used for acquiring a first target sound signal received by a target microphone within a preset time length;
the preprocessing submodule is used for preprocessing the first target sound signal to obtain a second target sound signal, and the second target sound signal is the preprocessed first target sound signal;
the first obtaining submodule is used for obtaining an energy value change curve of the second target sound signal and an interval time difference sequence of the second target sound signal;
the first confirming submodule is used for confirming whether the second target signal is a noise signal or not through an energy value change curve and an interval time difference sequence of the second target sound signal, if so, the second target sound signal is confirmed to be invalid, and otherwise, the second target sound signal is confirmed to be valid;
the acquisition submodule is further configured to acquire a target sound signal subsequently received by a target microphone when the second target sound signal is confirmed to be valid.
3. The microphone sound reception monitoring device as claimed in claim 1, wherein the comparing module comprises:
the cutting submodule is used for cutting the target sound signal into a plurality of sections of third sound signals;
the first calculation submodule is used for acquiring the frequency band of each section of the third sound signal and calculating the signal-to-noise ratio between the frequency band of each section of the third sound signal and the background noise of the environment where the target microphone is located;
the second confirming submodule is used for confirming the target signal intensity of the target sound signal according to the signal-to-noise ratio of each section of the third sound signal;
and the first comparison submodule is used for receiving the preset target signal intensity, comparing the target signal intensity with the preset signal intensity and acquiring a comparison result.
4. The microphone sound reception monitoring device as claimed in claim 1, wherein the determining module comprises:
the first judgment sub-module is used for judging that the use state of the target microphone is abnormal when the comparison result is that the target signal intensity is smaller than the preset signal intensity, and preliminarily judging that the use state of the target microphone is normal when the comparison result is that the target signal intensity is larger than or equal to the preset signal intensity;
the test submodule is used for performing index test on the target sound signal to obtain a test result when the use state of the target microphone is judged to be normal preliminarily;
the second comparison submodule is used for comparing the current index test value in the test result with a preset index test value, and when the current index test value is greater than or equal to the preset index test value, the target sound signal is determined to have no interruption, otherwise, the target sound signal is determined to have interruption;
and the second judging submodule is used for further judging that the use state of the target microphone is normal when the target sound signal is confirmed to be uninterrupted, and judging that the use state of the target microphone is abnormal when the target sound signal is confirmed to be interrupted.
5. The microphone sound reception monitoring device as claimed in claim 1, wherein the evaluation module comprises:
the second acquisition submodule is used for acquiring the time length and the frequency division multiple of the target sound signal in a preset level state;
the second calculation submodule is used for calculating the current signal frequency of the target sound signal according to the time length of the target sound signal in a preset level state and the frequency division multiple;
the third obtaining submodule is used for obtaining a sound energy value corresponding to the current signal frequency of the target sound signal from a preset database according to the current signal frequency of the target sound signal;
and the evaluation submodule is used for determining whether the sound energy value is greater than or equal to a preset threshold value, if so, evaluating that the sound receiving state of the target microphone is normal, and otherwise, evaluating that the sound receiving state of the target microphone is abnormal.
6. The microphone radio monitoring device of claim 1, wherein the acquisition module further comprises:
the third confirming submodule is used for confirming a sound source pronunciation signal relative to the target microphone according to the background noise of the environment where the target microphone is located and the target sound signal;
the drawing submodule is used for drawing a comparison oscillogram of the pronunciation signal and the target sound signal;
the fourth confirming submodule is used for confirming the distortion condition of the target sound signal according to the comparison oscillogram;
and the eliminating submodule is used for selecting a signal section with an interference signal from the target sound signal according to the distortion condition and eliminating the interference signal from the signal section.
7. The microphone sound reception monitoring device as recited in claim 1, further comprising:
the monitoring module is used for monitoring RSSI (received signal strength indicator) information and SNR (signal to noise ratio) information of a target environment where the target microphone is located;
the analysis module is used for analyzing a smooth RSSI parameter and a smooth SNR parameter of the target environment according to the RSSI information and the SNR information;
the analysis module is used for analyzing the interference factor of the noise signal in the target environment to the target sound signal received by the target microphone according to the smooth RSSI parameter and the smooth SNR parameter of the target environment;
and the de-drying module is used for determining comprehensive sound quality parameters of the target sound signals according to the interference factors and de-noising the target sound signals according to the comprehensive sound quality parameters.
8. The microphone radio monitoring device of claim 2, wherein the acquisition submodule comprises: the detection unit is used for detecting a target electroacoustic parameter of the target microphone and judging whether the target electroacoustic parameter is qualified or not, and the judging step comprises the following steps:
performing sound receiving characteristic analysis on a sound receiving unit arranged in the target microphone to obtain a current sound receiving sensitivity curve of the target microphone;
comparing the current radio sensitivity curve with a standard radio sensitivity curve to obtain a difference value;
determining a target microphone array of a target microphone according to the difference value;
generating a radio reception test signal of a target microphone based on the target microphone array;
generating expected sound receiving parameters of a target microphone according to the sound receiving test signals;
generating a recording instruction according to the radio reception test signal, and transmitting the recording instruction to a control unit of a target microphone;
detecting an acoustoelectric response signal of the target microphone when the target microphone collects sound;
filtering the acoustoelectric response signal to obtain a frequency curve and a phase curve corresponding to the acoustoelectric response signal;
processing the frequency curve and the phase curve to obtain a harmonic distortion curve and an impedance curve of the acoustoelectric response signal;
analyzing according to the harmonic distortion curve and the impedance curve to obtain the actual sound receiving parameters of the target microphone;
constructing characteristic matrixes of the expected radio receiving parameters and the actual radio receiving parameters respectively;
comparing the characteristic matrixes of the two matrixes, and screening to obtain a plurality of matrix factors with two matrixes different;
acquiring an operating parameter value of the target microphone, and constructing a nonlinear space state model of the target microphone according to the operating parameter value of the target microphone;
acquiring a parameter value corresponding to each matrix factor, and inputting the parameter value corresponding to each matrix factor into the nonlinear space state model;
carrying out self-adaptive calculation on each input parameter value by utilizing a preset nonlinear function in the nonlinear space state model to obtain a nonlinear compensation parameter value corresponding to the parameter value;
fusing the plurality of nonlinear compensation parameter values to obtain a target electroacoustic parameter of a target microphone;
and judging whether the target electroacoustic parameter meets the preset sound receiving requirement, if so, judging that the target electroacoustic parameter is qualified without subsequent operation, otherwise, judging that the target electroacoustic parameter is unqualified, and sending a prompt for changing the preset sound receiving parameter of the target microphone to a user.
9. A microphone reception monitoring method is characterized by comprising the following steps:
collecting a target sound signal received by a target microphone;
confirming the target signal intensity of the target sound signal, and comparing the target signal intensity with a preset signal intensity to obtain a comparison result;
judging the use state of the target microphone according to the comparison result;
and when the use state of the target microphone is normal, acquiring the current signal frequency of the target sound signal, and determining the sound receiving state of the target microphone according to the current signal frequency.
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| CN117459864A (en) * | 2023-10-25 | 2024-01-26 | 广州市杰泰电子科技有限公司 | Wireless microphone system capable of automatically adjusting transmitting power |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117459864A (en) * | 2023-10-25 | 2024-01-26 | 广州市杰泰电子科技有限公司 | Wireless microphone system capable of automatically adjusting transmitting power |
| CN117459864B (en) * | 2023-10-25 | 2024-04-05 | 广州市杰泰电子科技有限公司 | Wireless microphone system capable of automatically adjusting transmitting power |
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