CN111491247A - Microphone hole plugging detection method and device, storage medium and related equipment - Google Patents
Microphone hole plugging detection method and device, storage medium and related equipment Download PDFInfo
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Abstract
The application provides a microphone hole plugging detection method, a microphone hole plugging detection device, a storage medium and related equipment, wherein the method comprises the following steps: emitting a laser detection signal to a pickup hole of a microphone, wherein the laser detection signal is modulated with a preset audio signal; acquiring an output audio signal of the microphone; and determining whether the microphone is in a hole blocking state or not based on the preset audio signal and the output audio signal. The method is simple and easy to implement, high in accuracy and suitable for batch detection of production lines.
Description
Technical Field
The application relates to the field of microphones, in particular to a microphone hole blockage detection method and device, a storage medium and related equipment.
Background
A microphone component in the terminal is generally arranged in a terminal shell, a sound pickup hole of the microphone needs to be communicated with the outside, the sound pickup hole of the microphone is easy to block, the sound pickup of the terminal is poor, and therefore the detection of the hole blocking condition of the microphone needs to be carried out.
The traditional method for detecting the hole blocking condition of the microphone is manual visual inspection and sound pickup performance evaluation. Because the pickup hole often is thin and dark, artifical visual inspection often can't accurately detect out the stifled hole condition of microphone. When the microphone product is subjected to pickup performance evaluation, a professional mute room is needed, and manual operation by a specially-assigned person is needed, so that the microphone product is not suitable for batch detection of a production line.
Disclosure of Invention
In order to solve the above problem, embodiments of the present application provide a microphone hole plugging detection method, device, storage medium, and related apparatus, which can solve the problem of difficulty in detecting a microphone hole plugging.
In a first aspect, an embodiment of the present application provides a microphone hole plugging detection method, including the following steps:
emitting a laser detection signal to a pickup hole of a microphone, wherein the laser detection signal is modulated with a preset audio signal;
acquiring an output audio signal of the microphone;
and determining whether the microphone is in a hole blocking state or not based on the preset audio signal and the output audio signal.
Optionally, the method further comprises:
determining an environmental noise frequency band;
selecting a frequency band outside the range of the environmental noise frequency band as a test frequency band;
to the pickup hole transmission laser detected signal of microphone, laser detected signal modulation has preset audio signal, includes:
and transmitting the laser detection signal to a pickup hole of the microphone, wherein the laser detection signal is modulated with the preset audio signal, and the frequency band of the preset audio signal is the test frequency band.
Optionally, the determining the ambient noise frequency band includes:
determining a frequency band where human voice is located in the environment;
the selecting the frequency band outside the range of the environmental noise frequency band as a test frequency band comprises the following steps:
and selecting a frequency band outside the frequency band range of the human voice in the environment as the test frequency band.
Optionally, the determining the ambient noise frequency band includes:
determining a frequency band in which a sound of machine operation in an environment is located;
the selecting the frequency band outside the range of the environmental noise frequency band as a test frequency band comprises the following steps:
and selecting a frequency band outside the frequency band range of the sound of the machine operation in the environment as the test frequency band.
Optionally, the determining whether the microphone is in a hole plugging state based on the preset audio signal and the output audio signal includes:
determining a first audio parameter of the preset audio signal;
determining a second audio parameter of the output audio signal;
and determining whether the microphone is in a hole blocking state or not by using the first audio parameter and the second audio parameter.
Optionally, the determining a first audio parameter of the preset audio signal includes:
determining a first audio frequency band of the preset audio signal;
the determining a second audio parameter of the output audio signal comprises:
determining a second audio frequency band of the output audio signal;
the determining whether the microphone is in a hole plugging state by using the first audio parameter and the second audio parameter includes:
and if the first audio frequency band is not matched with the second audio frequency band, determining that the microphone is in a hole blocking state.
Optionally, the determining a first audio parameter of the preset audio signal includes:
determining a first audio volume of the preset audio signal;
the determining a second audio parameter of the output audio signal comprises:
determining a second audio volume of the output audio signal;
the determining whether the microphone is in a hole plugging state by using the first audio parameter and the second audio parameter includes:
and if the difference value of the first audio volume and the second audio volume is larger than or equal to a preset threshold value, determining that the microphone is in a hole blocking state.
In a second aspect, an embodiment of the present application provides a microphone hole plugging detection apparatus, including:
the laser emitting unit is used for emitting a laser detection signal to a pickup hole of a microphone, and the laser detection signal is modulated with a preset audio signal;
a signal acquisition unit for acquiring an output audio signal of the microphone;
and the state determining unit is used for determining whether the microphone is in a hole blocking state or not based on the preset audio signal and the output audio signal.
In a third aspect, the present application provides a computer-readable storage medium, on which a computer program is stored, which when executed by a processor implements the steps of any one of the above methods.
In a fourth aspect, an embodiment of the present application provides an electronic device, including a memory, a processor, and a computer program stored on the memory and executable on the processor, where the processor implements the steps of any one of the above methods when executing the program.
In the embodiment of the application, a laser detection signal is emitted to a pickup hole of a microphone, and the laser detection signal is modulated with a preset audio signal; acquiring an output audio signal of the microphone; and determining whether the microphone is in a hole blocking state or not based on the preset audio signal and the output audio signal. The method is simple and easy to implement, high in accuracy, capable of controlling the detection system to automatically detect and suitable for batch detection of a production line.
Drawings
Fig. 1 is a schematic diagram illustrating a microphone hole blockage detection method according to an embodiment of the present disclosure;
fig. 2 is a schematic flow chart of a microphone hole plugging detection method according to an embodiment of the present disclosure;
fig. 3 is a schematic flowchart of another microphone hole blockage detection method according to an embodiment of the present disclosure;
fig. 4 is a schematic flowchart of another microphone hole blockage detection method according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a microphone hole blockage detection device according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
The present application is further described with reference to the following figures and examples.
In the following description, the terms "first" and "second" are used for descriptive purposes only and are not intended to indicate or imply relative importance. The following description provides embodiments of the present application, where different embodiments may be substituted or combined, and thus the present application is intended to include all possible combinations of the same and/or different embodiments described. Thus, if one embodiment includes feature A, B, C and another embodiment includes feature B, D, then this application should also be considered to include an embodiment that includes one or more of all other possible combinations of A, B, C, D, even though this embodiment may not be explicitly recited in text below.
The following description provides examples, and does not limit the scope, applicability, or examples set forth in the claims. Changes may be made in the function and arrangement of elements described without departing from the scope of the disclosure. Various examples may omit, substitute, or add various procedures or components as appropriate. For example, the described methods may be performed in an order different than the order described, and various steps may be added, omitted, or combined. Furthermore, features described with respect to some examples may be combined into other examples.
The microphone hole blockage detection principle provided by the embodiment of the application is as follows: when the laser modulated with the audio signal acts on the microphone diaphragm, the microphone diaphragm can demodulate the audio signal therein. Through the effect of laser to the microphone vibrating diaphragm, the microphone can pick up the audio signal of modulation in laser, and light sees through the pickup hole and gets into the microphone, is picked up by the vibrating diaphragm. If a microphone mounted on a PCBA (printed Circuit Board Assembly) is blocked, light cannot enter a cavity through a pickup hole, a pre-modulated sound signal cannot be detected in an output signal of the microphone, and therefore poor hole blocking is identified. The method of the embodiment is suitable for PCBA-level hole plugging detection and is also suitable for microphone hole plugging detection of a part of complete machines.
Fig. 1 is a schematic diagram illustrating a microphone hole blockage detection method according to an embodiment of the present disclosure. The left part of fig. 1 is a screenshot of the assembled whole machine, and the right part of fig. 1 is composed of a laser and an acousto-optic modulation circuit for driving the laser. The method of the embodiment can be used for a PCBA hole plugging detection link with a Micro-Electro-Mechanical System (MEMS) microphone, and can also be used for a complete machine microphone array factory test link. The scheme of this embodiment has the advantages of high hole plugging detection rate, high measurement speed, objective and reliable test result, simple construction of test environment and no need of too many human intervention in the test process. In addition, the scheme of the embodiment does not need an additional sound source, is also suitable for factories with high background noise, does not need to build a costly anechoic room test environment, and the test audio is an optical signal modulated by laser and does not generate audible extra noise.
The method provided by the embodiment of the application can be used for various terminals provided with microphones, and the condition that the pickup holes of the microphones are blocked can be detected. Such terminals include, but are not limited to, devices such as mobile phones, notebook computers, digital broadcast receivers, PDAs (personal digital assistants), PADs (tablets), PMPs (portable multimedia players), wearable devices, and the like.
Referring to fig. 2, fig. 2 is a schematic flowchart of a microphone hole blockage detection method provided in an embodiment of the present application, where the method includes:
s201, emitting laser detection signals to a pickup hole of a microphone, wherein the laser detection signals are modulated with preset audio signals.
Most terminals need to be provided with a microphone for converting an external sound signal into an electric signal. The sound pick-up hole is a component of the microphone, and the sound pick-up hole is used for collecting sound signals by the microphone. In order to collect sound signals better, the sound pickup hole is generally required to be provided inside the housing of the terminal, and thus, the sound pickup hole is easily clogged.
The laser can be driven by the modulation circuit to emit laser modulated with a preset audio signal. The preset audio signal may be a fixed audio signal, or may be adjusted as needed. For example, different preset audio signals can be set to reduce the influence of noise on the test result when the noise is different in different environments. The modulation circuit may be set by a technician in advance.
And S202, acquiring an output audio signal of the microphone.
When the laser modulated with the audio signal acts on the microphone diaphragm, the microphone diaphragm can demodulate the audio signal therein. An output audio signal whose microphone is good for the laser detection of step S201 can be acquired. However, if the sound-collecting hole of the microphone is completely blocked, S202 may not be able to acquire the output audio signal.
S203, determining whether the microphone is in a hole blocking state or not based on the preset audio signal and the output audio signal.
The specific implementation manner of determining whether the microphone is in the hole plugging state based on the preset audio signal and the output audio signal may be various. For example, if the sound pickup hole of the microphone is completely blocked, the laser detection signal cannot enter the cavity through the sound pickup hole, and the pre-modulated sound signal cannot be detected in the output signal of the microphone, so that the microphone is determined to be in the hole blocking state. Or, if the volume difference between the preset audio signal and the output audio signal is too large, it indicates that the sound pick-up hole is not completely blocked, but the sound pick-up hole is also blocked, and needs to be cleaned. The volume difference may be set empirically.
According to the microphone hole blockage detection method provided by the embodiment of the application, whether the microphone is in a hole blockage state or not can be determined by presetting the audio signal and outputting the audio signal. If the output audio signal is not detected, the output audio signal does not correspond to the preset audio signal, or the volume of the output audio signal is too small, and the like, the microphone can be determined to be in the hole blocking state. The method is simple and easy to implement, high in accuracy, free of a professional mute room and suitable for batch detection of a production line.
In addition, according to the method provided by the embodiment of the application, the laser with the preset audio signal is modulated to serve as the detection signal, so that the detection signal can reach the pickup hole of the microphone in a concentrated manner, energy diffused in the midway is less, and the test result is more accurate. And the test audio is an optical signal modulated on the laser without generating audible additional noise.
Referring to fig. 3, fig. 3 is a schematic flowchart of a microphone hole blockage detection method provided in an embodiment of the present application, where the method includes:
s301, determining an environmental noise frequency band.
Different environments present different noise. The frequency range over which different people and different objects emit sound is different. The ambient noise frequency band is the frequency range of noise in the detection environment.
S302, selecting a frequency band outside the range of the environmental noise frequency band as a test frequency band.
And selecting a frequency band outside the range of the environmental noise frequency band as a test frequency band. For example, the environmental noise frequency range is 50 hz to 200 hz, the test frequency range may be 300 hz to 600 hz, and the test frequency range may also be 5000 hz to 10000 hz.
The environmental noise may be picked up by the microphone during the testing process, if the frequency range of the environmental noise overlaps with the frequency range of the testing frequency range, the noise may affect the output audio signal of the microphone, the output audio signal cannot accurately correspond to the preset audio signal, and the volume of the output audio signal can be increased, so that the detection result is inaccurate.
S303, to the pickup hole transmission of microphone laser detection signal, laser detection signal modulation system have predetermine audio signal, the frequency channel of predetermineeing audio signal does test the frequency channel.
The laser detection signal is modulated with a preset audio signal, and the frequency band of the preset audio signal is different from the frequency band of the environmental noise so as to reduce the influence of the environmental noise on the detection result.
And S304, acquiring the output audio signal of the microphone.
S305, determining whether the microphone is in a hole blocking state or not based on the preset audio signal and the output audio signal.
Optionally, step S301 includes:
determining a frequency band where human voice is located in the environment;
step S303 includes:
and selecting a frequency band outside the frequency band range of the human voice in the environment as the test frequency band.
The frequency range of the human voice is generally 100 Hz to 10000 Hz. The frequency band outside the frequency band range of the human voice is selected as the frequency band of the preset audio signal, so that the influence of daily speaking of an operator in the test environment on the detection result can be reduced.
Optionally, step S301 includes:
determining a frequency band in which a sound of machine operation in an environment is located;
step S303 includes:
and selecting a frequency band outside the frequency band range of the sound of the machine operation in the environment as the test frequency band.
Different machine operations may emit sounds at different frequencies. The frequency band outside the frequency band range of the sound of the machine operation in the environment is selected as the frequency band of the preset audio signal, so that the influence of the machine operation in the test environment on the detection result can be reduced.
The environmental noise may be picked up by the microphone during the testing process, and if the environmental noise frequency band range overlaps with the testing frequency band range, the noise may affect the output audio signal of the microphone, the output audio signal may not accurately correspond to the preset audio signal, and the volume of the output audio signal may be increased. According to the microphone hole blockage detection method provided by the embodiment of the application, the frequency band outside the range of the frequency band of the environmental noise is selected as the frequency band of the preset audio frequency, and the detection result can be accurate by the method provided by the embodiment of the application.
Referring to fig. 4, fig. 4 is a schematic flowchart of a microphone hole blockage detection method provided in an embodiment of the present application, where the method includes:
s401, emitting laser detection signals to a pickup hole of a microphone, wherein the laser detection signals are modulated with preset audio signals.
S402, acquiring an output audio signal of the microphone.
S403, determining a first audio parameter of the preset audio signal.
The first audio parameter is a parameter that can be used to characterize a predetermined audio signal. The first audio parameter may include a volume of a preset audio signal, a frequency of the preset audio signal, a wavelength of the preset audio signal, a period of the preset audio signal, and the like.
S404, determining a second audio parameter of the output audio signal.
The second audio parameter is a parameter that can be used to characterize the output audio signal. The second frequency parameter may include a volume of the output audio signal, a frequency of the output audio signal, a wavelength of the output audio signal, a period of the output audio signal, and the like.
S405, determining whether the microphone is in a hole blocking state or not by using the first audio parameter and the second audio parameter.
The specific implementation manner of determining whether the microphone is in the hole plugging state by using the first audio parameter and the second audio parameter may be various. For example, the first audio parameter may be a frequency or period of a preset audio signal, and the second audio parameter may be a frequency or period of an output audio signal. If the pickup hole of the microphone is completely blocked, the laser detection signal cannot enter the cavity through the pickup hole, and the output audio signal cannot be detected in the output signal of the microphone or the output audio signal matched with the first audio parameter is not detected, so that the microphone is determined to be in the hole blocking state. The first audio parameter may also be a volume of a preset audio signal, and the second audio parameter may also be a frequency volume of an output audio signal. If the difference value between the first audio parameter and the second audio parameter is too large, the problem that the pickup hole is partially blocked is solved, the pickup hole of the microphone needs to be cleaned, and otherwise, the pickup function of the microphone is weak.
Optionally, step S403 includes:
determining a first audio frequency band of the preset audio signal;
step S404 includes:
determining a second audio frequency band of the output audio signal;
step S405 includes:
and if the first audio frequency band is not matched with the second audio frequency band, determining that the microphone is in a hole blocking state.
Whether the first audio band and the second audio band match may be determined in a variety of ways. And if the first audio frequency band and the second audio frequency band are completely overlapped, determining that the first audio frequency band is matched with the second audio frequency band. Or the first audio frequency band and the second audio frequency band have a partial overlapping area, the first audio frequency band and the second audio frequency band are determined to be matched. Or the difference between the minimum frequency value of the first audio frequency band and the minimum frequency value of the second audio frequency band is smaller than the first frequency difference, and the difference between the maximum frequency value of the first audio frequency band and the minimum frequency value of the second audio frequency band is smaller than the second frequency difference, it is determined that the first audio frequency band and the second audio frequency band are matched. The embodiment of the present application does not limit how to determine whether the first audio frequency band and the second audio frequency band are matched.
Optionally, step S403 includes:
determining a first audio volume of the preset audio signal;
step S404 includes:
determining a second audio volume of the output audio signal;
step S405 includes:
and if the difference value of the first audio volume and the second audio volume is larger than or equal to a preset threshold value, determining that the microphone is in a hole blocking state.
The first audio parameter may be a volume of a preset audio signal and the second audio parameter may be a volume of an output audio signal. The difference value of the first audio parameter and the second audio parameter is larger than or equal to a preset threshold value, the problem that the pickup hole is partially blocked is indicated, and the pickup hole part of the microphone needs to be cleaned subsequently. The preset threshold may be an empirical value, and may be written directly into the detection system by a technician or set according to a user's requirement.
The microphone hole blockage detection method provided by the embodiment of the application determines a first audio parameter of a preset audio signal, determines a second audio parameter of the audio signal, and determines whether the microphone is in a hole blockage state or not by using the first audio parameter and the second audio parameter. The first frequency parameter and the second frequency parameter may be a volume of the audio signal, a frequency of the audio signal, a wavelength of the audio signal, a period of outputting the audio signal, and the like. The detection method is easy to realize and high in accuracy.
Referring to fig. 5, fig. 5 is a schematic structural diagram of a microphone hole blockage detection device according to an embodiment of the present disclosure, and as shown in fig. 5, the microphone hole blockage detection device includes:
the laser emitting unit 501 is configured to emit a laser detection signal to a pickup hole of a microphone, where the laser detection signal is modulated with a preset audio signal;
a signal acquisition unit 502 for acquiring an output audio signal of the microphone;
a state determining unit 503, configured to determine whether the microphone is in a hole plugging state based on the preset audio signal and the output audio signal.
Optionally, the apparatus further comprises:
a frequency band selecting unit 504, configured to determine an environmental noise frequency band;
selecting a frequency band outside the range of the environmental noise frequency band as a test frequency band;
the state determination unit 503 is specifically configured to:
and transmitting the laser detection signal to a pickup hole of the microphone, wherein the laser detection signal is modulated with the preset audio signal, and the frequency band of the preset audio signal is the test frequency band.
Optionally, the frequency band selecting unit 504 is specifically configured to:
determining a frequency band where human voice is located in the environment;
and selecting a frequency band outside the frequency band range of the human voice in the environment as the test frequency band.
Optionally, the frequency band selecting unit 504 is specifically configured to:
determining a frequency band in which a sound of machine operation in an environment is located;
and selecting a frequency band outside the frequency band range of the sound of the machine operation in the environment as the test frequency band.
Optionally, the state determination unit 503 is specifically configured to:
determining a first audio parameter of the preset audio signal;
determining a second audio parameter of the output audio signal;
and determining whether the microphone is in a hole blocking state or not by using the first audio parameter and the second audio parameter.
Optionally, the state determination unit 503 is specifically configured to:
determining a first audio frequency band of the preset audio signal;
determining a second audio frequency band of the output audio signal;
and if the first audio frequency band is not matched with the second audio frequency band, determining that the microphone is in a hole blocking state.
Optionally, the state determination unit 503 is specifically configured to:
determining a first audio volume of the preset audio signal;
determining a second audio volume of the output audio signal;
and if the difference value of the first audio volume and the second audio volume is larger than or equal to a preset threshold value, determining that the microphone is in a hole blocking state.
It is clear to a person skilled in the art that the solution according to the embodiments of the present application can be implemented by means of software and/or hardware. The "unit" and "module" in this specification refer to software and/or hardware that can perform a specific function independently or in cooperation with other components, where the hardware may be, for example, an FPGA (Field-Programmable Gate Array), an IC (Integrated Circuit), or the like.
Each processing unit and/or module in the embodiments of the present application may be implemented by an analog circuit that implements the functions described in the embodiments of the present application, or may be implemented by software that executes the functions described in the embodiments of the present application.
The embodiment of the application also provides a computer readable storage medium, on which a computer program is stored, and the program is executed by a processor to implement the steps of the microphone hole plugging detection method. The computer-readable storage medium may include, but is not limited to, any type of disk including floppy disks, optical disks, DVD, CD-ROMs, microdrive, and magneto-optical disks, ROMs, RAMs, EPROMs, EEPROMs, DRAMs, VRAMs, flash memory devices, magnetic or optical cards, nanosystems (including molecular memory ICs), or any type of media or device suitable for storing instructions and/or data.
Referring to fig. 6, a schematic structural diagram of an electronic device according to an embodiment of the present application is shown, where the electronic device may be used to implement the microphone hole blockage detection method provided in the foregoing embodiment. Specifically, the method comprises the following steps:
the memory 1020 may be used to store software programs and modules, and the processor 1080 executes various functional applications and data processing by operating the software programs and modules stored in the memory 1020. The memory 1020 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the terminal device, and the like. Further, the memory 1020 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device. Accordingly, memory 1020 may also include a memory controller to provide access to memory 1020 by processor 1080 and input unit 1030.
The input unit 1030 may be used to receive input numeric or character information and generate keyboard, mouse, joystick, optical or trackball signal inputs related to user settings and function control. In particular, the input unit 1030 may include a touch-sensitive surface 1031 (e.g., a touch screen, a touchpad, or a touch frame). The touch-sensitive surface 1031, also referred to as a touch display screen or a touch pad, may collect touch operations by a user (such as operations by a user on or near the touch-sensitive surface 1031 using any suitable object or attachment, such as a finger, a stylus, etc.) on or near the touch-sensitive surface 1031 and drive the corresponding connection device according to a preset program. Optionally, the touch sensitive surface 1031 may comprise two parts, a touch detection means and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 1080, and can receive and execute commands sent by the processor 1080. In addition, the touch-sensitive surface 1031 may be implemented using various types of resistive, capacitive, infrared, and surface acoustic waves.
The Display unit 1040 may be used to Display information input by or provided to a user and various graphical user interfaces of the terminal device, which may be comprised of graphics, text, icons, video, and any combination thereof, the Display unit 1040 may include a Display panel 1041, optionally the Display panel 1041 may be configured in the form of L CD (L iquid Crystal Display ), O L ED (Organic L light-Emitting Diode), or the like, further, the touch-sensitive surface 1031 may cover the Display panel 1041, and when the touch-sensitive surface 1031 detects a touch operation on or near it, it may be communicated to a processor 1080 to determine the type of touch event, and the processor 1080 then provides a corresponding visual output on the Display panel 1041 depending on the type of touch event.
The processor 1080 is a control center of the terminal device, connects various parts of the whole terminal device by using various interfaces and lines, and executes various functions of the terminal device and processes data by operating or executing software programs and/or modules stored in the memory 1020 and calling data stored in the memory 1020, thereby monitoring the whole terminal device. Optionally, processor 1080 may include one or more processing cores; processor 1080 may integrate an application processor that handles operating system, user interfaces, applications, etc. and a modem processor that handles wireless communications. It is to be appreciated that the modem processor described above may not be integrated into processor 1080.
Specifically, in this embodiment, the display unit of the terminal device is a touch screen display, the terminal device further includes a memory, and one or more programs, where the one or more programs are stored in the memory, and the one or more programs are configured to be executed by the one or more processors, and include steps for implementing the microphone blockage detection method.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described device embodiments are merely illustrative, for example, the division of the unit is only a logical functional division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.
All functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may be separately regarded as one unit, or two or more units may be integrated into one unit; the integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A microphone hole plugging detection method, the method comprising:
emitting a laser detection signal to a pickup hole of a microphone, wherein the laser detection signal is modulated with a preset audio signal;
acquiring an output audio signal of the microphone;
and determining whether the microphone is in a hole blocking state or not based on the preset audio signal and the output audio signal.
2. The method of claim 1, further comprising:
determining an environmental noise frequency band;
selecting a frequency band outside the range of the environmental noise frequency band as a test frequency band;
to the pickup hole transmission laser detected signal of microphone, laser detected signal modulation has preset audio signal, includes:
and transmitting the laser detection signal to a pickup hole of the microphone, wherein the laser detection signal is modulated with the preset audio signal, and the frequency band of the preset audio signal is the test frequency band.
3. The method of claim 2, wherein determining the ambient noise band comprises:
determining a frequency band where human voice is located in the environment;
the selecting the frequency band outside the range of the environmental noise frequency band as a test frequency band comprises the following steps:
and selecting a frequency band outside the frequency band range of the human voice in the environment as the test frequency band.
4. The method of claim 2, wherein determining the ambient noise band comprises:
determining a frequency band in which a sound of machine operation in an environment is located;
the selecting the frequency band outside the range of the environmental noise frequency band as a test frequency band comprises the following steps:
and selecting a frequency band outside the frequency band range of the sound of the machine operation in the environment as the test frequency band.
5. The method of claim 1, wherein determining whether the microphone is in a plugged-hole state based on the preset audio signal and the output audio signal comprises:
determining a first audio parameter of the preset audio signal;
determining a second audio parameter of the output audio signal;
and determining whether the microphone is in a hole blocking state or not by using the first audio parameter and the second audio parameter.
6. The method of claim 5, wherein the determining the first audio parameter of the preset audio signal comprises:
determining a first audio frequency band of the preset audio signal;
the determining a second audio parameter of the output audio signal comprises:
determining a second audio frequency band of the output audio signal;
the determining whether the microphone is in a hole plugging state by using the first audio parameter and the second audio parameter includes:
and if the first audio frequency band is not matched with the second audio frequency band, determining that the microphone is in a hole blocking state.
7. The method of claim 5, wherein the determining the first audio parameter of the preset audio signal comprises:
determining a first audio volume of the preset audio signal;
the determining a second audio parameter of the output audio signal comprises:
determining a second audio volume of the output audio signal;
the determining whether the microphone is in a hole plugging state by using the first audio parameter and the second audio parameter includes:
and if the difference value of the first audio volume and the second audio volume is larger than or equal to a preset threshold value, determining that the microphone is in a hole blocking state.
8. A microphone hole blockage detection device, the device comprising:
the laser emitting unit is used for emitting a laser detection signal to a pickup hole of a microphone, and the laser detection signal is modulated with a preset audio signal;
a signal acquisition unit for acquiring an output audio signal of the microphone;
and the state determining unit is used for determining whether the microphone is in a hole blocking state or not based on the preset audio signal and the output audio signal.
9. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 7.
10. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the steps of the method of any of claims 1-7 are implemented when the program is executed by the processor.
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