A control method and device for embedded microphone

Abstract

The present invention is applicable to the technical field of microphone and noise reduction, and provides a control method and device for an embedded microphone, the method comprising: when one or more wireless transmitters of a first lecturer are paired with one or more wireless receivers, controlling the wireless receivers to play a test guide sound; collecting overflow sound information generated by the test guide sound through the first microphone of each wireless receiver; analyzing the wearing state information of each wireless receiver according to the difference in sound intensity between the overflow sound information and the test guide sound; and correcting a preset first noise reduction parameter according to the wearing state information of each wireless receiver to set the noise reduction optimization degree of each wireless receiver. The method of the present invention can perform noise reduction optimization for each rented user, that is, by detecting and analyzing the wearing state information for the user, performing noise reduction optimization for the wireless receiver of each user according to the wearing state, and solving the defect of poor personalization of the general configuration in a targeted manner.

Description

Technical Field

[0001] The present invention relates to the technical field of microphones and noise reduction, and in particular to a control method and device for an embedded microphone. Background Art

[0002] Embedded microphones are small microphones that can be implanted in devices for audio input or capture, converting audio signals into electrical signals and transmitting them to these devices. They are widely used in mobile phones, smart homes, cars, security, medical care, games, presentations, business introductions, hosts, or other staff explanations. When applied to business introductions and host explanations, they are usually used as an important part of the explainer, not limited to the wireless transmitter and wireless receiver used in the explainer (similar to the tour guide explainer); in order to better pick up sound and reduce noise, at least an external microphone or a built-in microphone (i.e., an embedded microphone), as well as an audio processing chip and a wireless communication module are integrated on the wireless transmitter.

[0003] The tour guides on the market include one-to-many tour guides, tour guide headsets or wireless tour guide systems. The tour guide gives the explanation through the tour headset, and the audience wears wireless receivers, such as ear-hook receivers, to listen to the one-to-many explanations, providing business explanation services to customers and improving their visiting and business interaction experience.

[0004] However, some of the existing guides use narrowband digital transmission, and the equivalent bandwidth is generally only tens of K. The audio compression ratio under bandwidth limitation is serious, which easily leads to loss of sound quality; on the other hand, the sound pickup effect of the guide often depends on the performance and configuration of the device, such as the sensitivity of the microphone, the processing power of the processor, etc. Some low-cost or poor-performance devices may have obvious defects in sound pickup, that is, some low-cost guides on the market do not have noise reduction function, or, although marked with noise reduction function, it is found through practice that the noise reduction function of these devices is generally weak. In crowded places with high ambient noise, the clarity of users, staff or customers will be greatly affected, and the noise reduction effect is poor; therefore, it is necessary to improve the noise reduction technology of existing guides. Summary of the invention

[0005] The object of the present invention is to provide a control method for an embedded microphone, aiming at solving the problem mentioned in the above background technology.

[0006] The present invention is implemented as follows: a control method for an embedded microphone, the method comprising:

[0007] When one or more wireless transmitters of the first lecturer are paired with one or more wireless receivers, controlling the wireless receivers to play a test guide tone;

[0008] Collecting the overflow sound information generated by the test guide sound through the first microphone of each wireless receiver;

[0009] Analyzing the wearing status information of each wireless receiver according to the difference in sound intensity between the overflow sound information and the test guide sound;

[0010] According to the wearing state information of each wireless receiver, the preset first noise reduction parameter is modified to set the noise reduction optimization degree of each wireless receiver;

[0011] Based on the second microphone of the wireless transmitter, or based on the second microphone of the wireless transmitter and the first microphone of the wireless receiver, the host's explanation information is processed with noise reduction and then transmitted to the paired wireless receiver. Each wireless receiver performs noise reduction optimization on the host's explanation information and then plays it to realize the explanation.

[0012] Furthermore, at the current noise reduction optimization level, the current overflow sound information is obtained through the first microphone, and the noise reduction optimization level of the host's explanation information is updated according to the current overflow sound information.

[0013] Furthermore, the method further comprises:

[0014] If the wireless receiver is provided with more than two first microphones, external noise is collected by one of the first microphones, and the remaining first microphones collect actual overflow sound generated by the test guide sound;

[0015] The overflow sound information is obtained by filtering the actual overflow sound through external noise.

[0016] Furthermore, the method also includes: when acquiring the noise-reduced host explanation information transmitted by the wireless transmitter, simultaneously acquiring its noise reduction parameters; and performing secondary noise reduction on the host explanation information based on the noise reduction parameters in the wireless receiver.

[0017] Furthermore, the method also includes: when performing secondary noise reduction on the host's explanation information based on the noise reduction parameter in the wireless receiver, controlling the first microphone to enter a dormant state.

[0018] Furthermore, the method further comprises:

[0019] In the process of monitoring the wireless channel noise between the wireless receiver and the wireless transmitter, if the monitored wireless channel noise exceeds a first noise threshold, waking up the first microphone;

[0020] Based on the sound picked up by the first microphone, active noise reduction is performed on the host's explanation information played by the wireless receiver.

[0021] Furthermore, the method further comprises:

[0022] If the period during which the frequency-modulated wireless channel noise exceeds the first noise threshold is less than a specified period of time, the first microphone is controlled to remain in a dormant state.

[0023] The present invention provides a control method for an embedded microphone, the method comprising:

[0024] When one or more wireless transmitters of the first lecturer are paired with one or more wireless receivers, controlling the wireless receivers to play a test guide tone;

[0025] Collecting the overflow sound information generated by the test guide sound through the first microphone of each wireless receiver;

[0026] Analyzing the wearing status information of each wireless receiver according to the difference in sound intensity between the overflow sound information and the test guide sound;

[0027] According to the wearing state information of each wireless receiver, the preset first noise reduction parameter is modified to set the noise reduction optimization degree of each wireless receiver;

[0028] Based on the second microphone of the wireless transmitter, or based on the second microphone of the wireless transmitter and the first microphone of the wireless receiver, the host's explanation information is subjected to noise reduction processing and then transmitted to the paired wireless receiver, and each wireless receiver performs noise reduction optimization on the host's explanation information and then plays it to realize the explanation;

[0029] and, monitoring the wireless channel noise between the wireless receiver and the wireless transmitter, and performing frequency modulation of the wireless channel when the wireless channel noise exceeds a second noise threshold;

[0030] Determining whether the noise of the frequency-modulated wireless channel exceeds a first noise threshold;

[0031] If not, the first microphone is controlled to enter a dormant state; wherein the second noise threshold is greater than the first noise threshold.

[0032] The present invention also provides a control device for an embedded microphone, used in any of the methods described, the device comprising:

[0033] An initial test module, used for controlling the wireless receivers to play a test guide tone when one or more wireless transmitters of the first lecturer are paired with one or more wireless receivers;

[0034] A receiving-end noise pickup module, used for collecting overflow sound information generated by the test guide sound through the first microphone of each wireless receiver;

[0035] A wearing state analysis module, used for analyzing the wearing state information of each wireless receiver according to the difference in sound intensity between the overflow sound information and the test guide sound;

[0036] The receiving end noise reduction module amends the preset first noise reduction parameter according to the wearing state information of each wireless receiver to set the noise reduction optimization degree of each wireless receiver;

[0037] The information playback module is used to perform noise reduction processing on the host's explanation information based on the second microphone of the wireless transmitter and the first microphone of the wireless receiver, and then transmit it to the paired wireless receiver. Each wireless receiver performs noise reduction optimization on the host's explanation information and then plays it to realize the explanation.

[0038] Furthermore, the device also includes: a sleep control module, used to control the first microphone to enter a sleep state.

[0039] Furthermore, the device further comprises: a frequency modulation noise reduction switching module, which is used to:

[0040] Monitoring the noise of a wireless channel between a wireless receiver and a wireless transmitter, and performing frequency modulation of the wireless channel when the noise of the wireless channel exceeds a second noise threshold;

[0041] Determine whether the noise of the frequency-modulated wireless channel is a first noise threshold;

[0042] If not, the first microphone is controlled to enter a dormant state.

[0043] The present invention provides a control method for an embedded microphone. Compared with the prior art, the present method can detect and analyze the wearing status of each wireless receiver corresponding to the user, and adjust the preset first noise reduction parameter according to the analysis result. In this way, the defect that the general parameter setting is difficult to be compatible with different users can be overcome, thereby bringing a better listening experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 A flowchart of a control method for an embedded microphone provided by an embodiment of the present invention;

[0045] Figure 2 is a first sub-flow chart of an embodiment of the present invention;

[0046] Figure 3 is a second sub-flow chart of an embodiment of the present invention;

[0047] Figure 4 is a third sub-flow chart of an embodiment of the present invention;

[0048] Figure 5 is a fourth sub-flow chart of an embodiment of the present invention;

[0049] Figure 6 is a fifth sub-flow chart of an embodiment of the present invention;

[0050] Figure 7 is a sixth sub-flow chart of an embodiment of the present invention;

[0051] Figure 8 A flowchart of another method for controlling an embedded microphone provided by an embodiment of the present invention;

[0052] Fig. 9 A structural block diagram of a control system of an embedded microphone provided by an embodiment of the present invention;

[0053] Fig.10 A structural block diagram of another control system of an embedded microphone provided by an embodiment of the present invention;

[0054] Fig.11 The figure is a block diagram of the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0056] like Figure 1 As shown, in one embodiment, a control method for an embedded microphone includes the following steps:

[0057] S101, when one or more wireless transmitters of a first lecturer are paired with one or more wireless receivers, controlling the wireless receivers to play a test guide tone;

[0058] In this step, it is assumed that it is used for a one-to-many explanation scenario, and a wireless transmitter and multiple wireless receivers are set to implement the explanation. The number of wireless receivers is the same as the number of users (or customers); a wireless transmitter is paired with multiple wireless receivers to build a wireless communication link to implement wireless communication. In this way, the content explained by the host through the wireless transmitter can be wirelessly transmitted to the wireless receivers of each user for the user to listen to; in the paired case, the wireless transmitter can send a test guide tone for testing, and the user is also instructed on the use of the device;

[0059] In one example, the test guide tone may be preset in the wireless receiver, and when pairing is performed, the test guide tone is triggered to test the status of the worn wireless receiver;

[0060] The wearing status includes: in-ear tightness or ear-hook tightness; the tightness can be divided into five levels, and the corresponding correction parameters of the five levels are set later.

[0061] S102, collecting overflow sound information generated by the test guide sound through the first microphone of each wireless receiver;

[0062] The first microphone of the wireless receiver is an embedded microphone, and the wireless transmitter is provided with a second microphone for noise reduction and sound pickup, which can be an embedded microphone or an external microphone;

[0063] During the test, by default, no business explanation has been given and there is no external environmental noise. Therefore, the overflow sound information collected by the first microphone is the sound transmitted when the test guide sound is played. Due to the difference in the tightness of the wireless receiver to the user's ear canal, the intensity of the sound transmitted is different.

[0064] S103, analyzing the wearing status information of each wireless receiver according to the difference in sound intensity between the overflow sound information and the test guide sound;

[0065] Only the tightness of wearing can be analyzed, because the higher the tightness, the better the noise isolation effect; during analysis: the sound intensity value of the test guide sound can be determined in advance, so after obtaining the overflow sound information, the corresponding sound intensity difference is calculated and then corresponds to the graded tightness interval.

[0066] S104, modifying the preset first noise reduction parameter according to the wearing state information of each wireless receiver to set the noise reduction optimization degree of each wireless receiver;

[0067] In this step, the first noise reduction parameter of the wireless receiver can be "none"; used as a normal headset. It can also be a universal noise reduction parameter, that is, a basic noise reduction headset;

[0068] Among them, the noise reduction parameters include: noise reduction type: active noise reduction, passive noise reduction, noise reduction ratio, frequency response, harmonic distortion and impedance, etc.;

[0069] Active Noise Cancellation (ANC) captures ambient noise through a built-in microphone and then generates a reverse waveform to eliminate noise; Passive noise reduction: mainly isolates external noise physically, such as the airtightness of earplugs. The higher the noise reduction ratio, the better the noise reduction effect. Generally speaking, devices with a noise reduction ratio of more than 20dB have ideal noise reduction effects. Frequency response describes the device's ability to restore sound at different frequencies. Harmonic distortion reflects the degree of timbre restoration when the device plays music; the smaller the distortion, the better the sound quality. Impedance refers to the resistance of the device to electric current. The size of the impedance affects the performance of the device, especially when connected to a mobile device (such as a mobile phone or tablet). The specific parameter settings are prior art and will not be described in detail here.

[0070] In one example, the first microphone can be fully utilized. For example, S201: Under the current noise reduction optimization level, the current overflow sound information is obtained through the first microphone, and the noise reduction optimization level of the host's explanation information is updated according to the current overflow sound information; see Figure 2 ; In this way, you can maintain good listening effects for a long time.

[0071] As mentioned above, setting the noise reduction optimization degree of each wireless receiver can be understood as a personalized feed-back noise reduction. This feed-back noise reduction is the noise reduction at the receiving end when the wireless transmitter has already performed noise reduction processing on the transmitted host's explanation information. In this way, the playback noise of the wireless receiver can be further eliminated and the sound quality can be improved.

[0072] S105, based on the second microphone of the wireless transmitter and the first microphone of the wireless receiver, the host's explanation information is subjected to noise reduction processing and then transmitted to the paired wireless receiver, and each wireless receiver performs noise reduction optimization on the host's explanation information and then plays it to realize the explanation;

[0073] In this step, it can also be done as follows: based on the second microphone of the wireless transmitter, the host's explanation information is subjected to noise reduction processing and then transmitted to the paired wireless receiver. Each wireless receiver performs noise reduction optimization on the host's explanation information and then plays it to realize the explanation; there is no need for the first microphone of the wireless receiver.

[0074] First, in the wireless transmitter of the host, the second microphone picks up the content of the host's explanation, and performs noise reduction processing in the wireless transmitter to obtain the host's explanation information with noise reduction;

[0075] The host's explanation information with reduced noise is wirelessly transmitted to each wireless receiver, and each wireless receiver performs a further noise reduction process (ie, noise reduction optimization) based on the corrected first noise reduction parameter, and then plays it to realize the explanation.

[0076] In one example of this embodiment, the degree of noise reduction optimization for each wireless receiver can be set on the wireless transmitter. In this way, noise reduction processing is performed again on the wireless transmitter end and then directly transmitted to each wireless receiver for playback; and the information of the secondary noise reduction processing is processed differently for each wireless receiver, which can better adapt to each user or customer.

[0077] In one embodiment, Figure 3 As shown, the method also includes:

[0078] S301: If the wireless receiver is provided with more than two first microphones, external noise is collected through one of the first microphones, and the remaining first microphones collect actual overflow sound generated by the test guide sound;

[0079] Generally, two first microphones may be provided.

[0080] S302: Filter the actual overflow sound through external noise to obtain the overflow sound information.

[0081] The location of the first microphone can be determined in advance, and after the location of the diaphragm or speaker that plays the sound in the wireless receiver is determined, a model can be established to derive the ideal audio information of the test guide sound propagating to the first microphone and the second microphone. Mean value processing: The ideal audio information can be regarded as a basic value, and the collected directional channel ambient sound is superimposed on the basic value, and the difference analysis is performed with the test guide sound to obtain the spillover sound information.

[0082] like Figure 4 As shown, in one embodiment, the method further includes:

[0083] S401, when obtaining the noise-reduced host explanation information transmitted by the wireless transmitter, simultaneously obtaining its noise reduction parameters;

[0084] In general, the default wireless transmitter will perform noise reduction on the host's explanation information before transmitting it;

[0085] The noise reduction parameters of the wireless transmitter are obtained and used in the wireless receiver. This is because the external environmental noise in the environment or path of the wireless transmitter and the wireless receiver during the user's visit to the service is similar. Therefore, the noise reduction processing of the wireless transmitter is also applicable to the wireless receiver worn by the user passing by later to a certain extent.

[0086] S402: In the wireless receiver, based on the noise reduction parameters, secondary noise reduction is performed on the host's explanation information.

[0087] In this embodiment, the primary noise reduction is performed in the wireless transmitter, and the secondary noise reduction can replace the original noise reduction optimization mode;

[0088] In one case, this secondary noise reduction can also be used simultaneously with the noise reduction optimization mode, providing more options.

[0089] In one embodiment, Figure 5 As shown, the method also includes:

[0090] S501, when performing secondary noise reduction on the host's explanation information based on the noise reduction parameter in the wireless receiver, controlling the first microphone to enter a dormant state;

[0091] In one case, the first microphone works only when pairing is performed; it can remain dormant during other periods, which can increase the battery life of the wireless receiver.

[0092] In one case, the first microphone can also participate in the noise reduction function of the wireless receiver.

[0093] exist Figure 6 In the method, the method further comprises:

[0094] S601, monitoring the wireless channel noise between the wireless receiver and the wireless transmitter, and waking up the first microphone when the wireless channel noise exceeds a first noise threshold;

[0095] In this step, a channel monitor may be provided in the wireless transmitter, which has the function of monitoring the noise of the communication channel;

[0096] A wake-up module is set in the wireless receiver. After the channel monitor feeds back a related monitoring signal, the wireless transmitter sends a wake-up instruction to the wake-up module to wake up the first microphone according to the monitoring situation.

[0097] Among them, the first noise threshold can be set as needed, and this step is not limited to this; illustratively, since there may be multiple hosts of explanation activities in a place, there is interference between different first explainers, so the setting of the first noise threshold is mainly based on the wireless signal strength and spectrum characteristics.

[0098] S602, actively reducing noise of the host's explanation information played by the wireless receiver through the first microphone;

[0099] Specifically, in the process of monitoring the wireless channel noise between the wireless receiver and the wireless transmitter, the ambient sound is collected by the first microphone, and the wireless receiver actively reduces the noise of the host's explanation information based on the collected ambient sound (that is, based on the sound picked up by the first microphone, the host's explanation information played by the wireless receiver is actively reduced); the listening experience of the host's explanation content can be further improved at the back end.

[0100] The specific active noise reduction technology is an existing technology and will not be described in detail here.

[0101] In some scenarios, such as Figure 7 As shown, the method also includes:

[0102] S701, monitoring the wireless channel noise between the wireless receiver and the wireless transmitter, and when the wireless channel noise exceeds a second noise threshold, performing frequency modulation of the wireless channel;

[0103] S702, determining whether the noise of the frequency-modulated wireless channel exceeds a first noise threshold;

[0104] If entering step S703, keep or wake up the first microphone;

[0105] The first microphone is used to obtain the current ambient sound through the first microphone, and to reduce the noise of the host's explanation information played by the wireless receiver based on the current ambient sound;

[0106] If not, proceed to step S704.

[0107] S704: Control the first microphone to enter a dormant state.

[0108] In one example, the method further includes: if the period during which the frequency-modulated wireless channel noise exceeds the first noise threshold is less than a specified period of time, controlling the first microphone to remain in a dormant state.

[0109] The specified time period can be set, for example: 200ms, 1s, etc.

[0110] In one embodiment, Figure 8 As shown, a control method for an embedded microphone, the method comprising:

[0111] S101, when one or more wireless transmitters of a first lecturer are paired with one or more wireless receivers, controlling the wireless receivers to play a test guide tone;

[0112] S102, collecting overflow sound information generated by the test guide sound through the first microphone of each wireless receiver;

[0113] S103, analyzing the wearing status information of each wireless receiver according to the difference in sound intensity between the overflow sound information and the test guide sound;

[0114] S104, modifying the preset first noise reduction parameter according to the wearing state information of each wireless receiver to set the noise reduction optimization degree of each wireless receiver;

[0115] S105, based on the second microphone of the wireless transmitter, or based on the second microphone of the wireless transmitter and the first microphone of the wireless receiver, the host's explanation information is subjected to noise reduction processing and then transmitted to the paired wireless receiver, and each wireless receiver performs noise reduction optimization on the host's explanation information and then plays it to realize the explanation;

[0116] as well as,

[0117] S106, monitoring the wireless channel noise between the wireless receiver and the wireless transmitter, and performing frequency modulation of the wireless channel when the wireless channel noise exceeds a second noise threshold;

[0118] Wherein, after the frequency modulation: determining whether the noise of the wireless channel after the frequency modulation exceeds a first noise threshold;

[0119] If not, the first microphone is controlled to enter a dormant state; wherein the second noise threshold is greater than the first noise threshold; see Figure 7 .

[0120] In this embodiment, the first noise threshold and the second noise threshold are both constant values ​​and can be set as needed.

[0121] like Fig. 9 As shown, in another embodiment, a control device for an embedded microphone is used in any of the methods described, and the device includes:

[0122] The initial test module 100 is used to control the wireless receiver to play a test guide tone when one or more wireless transmitters of the first lecturer are paired with one or more wireless receivers;

[0123] For example, the initial test module 100 may include a pairing state synchronization unit, a test information storage unit, and a test triggering unit;

[0124] When one or more wireless transmitters are paired with one or more wireless receivers, the pairing status synchronization unit starts the test trigger unit, which retrieves the test guide sound from the test information storage unit, transmits it to each wireless receiver, and then plays it automatically.

[0125] The receiving end noise pickup module 200 is used to collect the overflow sound information generated by the test guide sound through the first microphone of each wireless receiver;

[0126] A wearing state analysis module 300, configured to analyze the wearing state information of each wireless receiver according to the difference in sound intensity between the overflow sound information and the test guide sound;

[0127] The receiving end noise reduction module 400 amends the preset first noise reduction parameter according to the wearing state information of each wireless receiver to set the noise reduction optimization degree of each wireless receiver;

[0128] The information playback module 500 is used to perform noise reduction processing on the host's explanation information based on the second microphone of the wireless transmitter and the first microphone of the wireless receiver, and then transmit it to the paired wireless receiver. Each wireless receiver performs noise reduction optimization on the host's explanation information and then plays it to realize the explanation.

[0129] In this embodiment, when the device is used for the first interpreter, the wearing status of each wireless receiver corresponding to the user can be detected and analyzed by the device. According to the analysis result, the preset first noise reduction parameter is adjusted, and the initial (universal) noise reduction parameter of each wireless receiver is personalized. In this way, the defect that the universal parameter setting is difficult to be compatible with different users can be overcome, bringing a better listening experience.

[0130] In one example of this embodiment, Fig.10 As shown, the device further includes: a sleep control module 600, for controlling the first microphone to enter a sleep state;

[0131] Specifically, the process of executing step S501 is as follows;

[0132] Alternatively, the coordinated frequency modulation noise reduction switching module 700 executes Figure 7 The process shown.

[0133] In one example of this embodiment, Fig.10 As shown, the device further includes: a frequency modulation noise reduction switching module 700, which is used to:

[0134] Monitoring the noise of a wireless channel between a wireless receiver and a wireless transmitter, and performing frequency modulation of the wireless channel when the noise of the wireless channel exceeds a second noise threshold;

[0135] Determine whether the noise of the frequency-modulated wireless channel is a first noise threshold;

[0136] If not, controlling the first microphone to enter a dormant state;

[0137] For a scenario of this example, see Figure 7 , I will not go into details here.

[0138] In this example, the above device is a computer program product, which can be used in a first lecturer, or in a gas pickup or earphone;

[0139] Generally, the first interpreter includes two parts: a wireless transmitter and a wireless receiver; the wireless transmitter is worn or held by the host, and there may be multiple wireless receivers, which are worn by the staff managed by the host.

[0140] It is understandable that after the first interpreter is worn, the chips, sensors, microphones and auxiliary devices included in it generally continue to operate at full load; the wireless transmitter has one or more functions such as ENC environmental noise reduction, ANC noise reduction, and feedforward active noise reduction. Among them, ANC noise reduction: the feedforward and feedback microphones collect original noise sound waves (the feedforward microphone collects original noise sound waves with environmental noise, and the feedback microphone collects human ear sound waves), and the noise signal is transmitted to the noise reduction processing chip. The chip performs real-time calculation and noise processing to generate anti-phase and equal-intensity sound waves. The reverse sound waves generated by the chip will offset the original noise, thereby achieving the noise reduction function; ENC environmental noise reduction: using a dual microphone array, the algorithm accurately calculates the position of the speaker's speech, while protecting the main direction of the target voice, eliminating interference noise in the environment; feedforward active noise reduction is that after the microphone collects the noise, it is processed by the noise reduction chip, and then the reverse sound waves are emitted from the speaker to achieve the goal of canceling the noise.

[0141] However, this will lead to unnecessary power consumption, and it is necessary to improve power consumption control. Based on this, the present embodiment is provided with a sleep control module 600 and a frequency modulation and noise reduction switching module 700, in order to control some components to sleep and not to continuously operate at full load, thereby extending battery life and service life.

[0142] The present invention provides a control method for an embedded microphone. Compared with the prior art, the present method can detect and analyze the wearing status of each wireless receiver corresponding to the user, and adjust the preset first noise reduction parameter according to the analysis result. In this way, the defect that the general parameter setting is difficult to be compatible with different users can be overcome, thereby bringing a better listening experience.

[0143] In this embodiment, Fig.11The internal structure diagram of a computer device in an embodiment is shown. The computer device includes a processor 10, a memory 11, a network interface 12, an input device 14 and a display screen 13 (or a mobile phone, a laptop computer) connected through a system bus. Among them, the memory 11 includes a non-volatile storage medium and an internal memory. The non-volatile storage medium of the computer device stores an operating system and may also store a computer program. When the computer program is executed by the processor 10, the processor 10 can implement the control device of the embedded microphone, specifically, the steps of the initial test module 100, the receiving end noise pickup module 200, the wearing state analysis module 300, the receiving end noise reduction module 400, and the information playback module 500 are respectively executed. The internal memory may also store a computer program. When the computer program is executed by the processor 10, the processor 10 can execute the steps of the control method of the embedded microphone. The display screen 13 of the computer device may be a liquid crystal display or an electronic ink display. The input device 14 of the computer device may be a touch layer covered on the display screen, or a key, trackball or touchpad set on the shell of the computer device, or an external keyboard, touchpad or mouse.

[0144] Those skilled in the art will understand that Fig.11 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0145] It should be understood that, although each step in the flow chart of each embodiment of the present invention is shown in sequence according to the indication of the arrow, these steps are not necessarily performed in sequence according to the order indicated by the arrow. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be performed in other orders. Moreover, at least a portion of the steps in each embodiment may include a plurality of sub-steps or a plurality of stages, and these sub-steps or stages are not necessarily performed at the same time, but can be performed at different times, and the execution order of these sub-steps or stages is not necessarily performed in sequence, but can be performed in turn or alternately with at least a portion of other steps or sub-steps or stages of other steps.

[0146] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the program can be stored in a non-volatile computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0147] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A control method for an embedded microphone, characterized in that: The method comprises: When one or more wireless transmitters of the first lecturer are paired with one or more wireless receivers, controlling the wireless receivers to play a test guide tone; Collecting the overflow sound information generated by the test guide sound through the first microphone of each wireless receiver; Analyzing the wearing status information of each wireless receiver according to the difference in sound intensity between the overflow sound information and the test guide sound; According to the wearing state information of each wireless receiver, the preset first noise reduction parameter is modified to set the noise reduction optimization degree of each wireless receiver; Based on the second microphone of the wireless transmitter, or based on the second microphone of the wireless transmitter and the first microphone of the wireless receiver, the host's explanation information is subjected to noise reduction processing and then transmitted to the paired wireless receiver, and each wireless receiver performs noise reduction optimization on the host's explanation information and then plays it to realize the explanation; and, monitoring the wireless channel noise between the wireless receiver and the wireless transmitter, and performing frequency modulation of the wireless channel when the wireless channel noise exceeds a second noise threshold; Determining whether the noise of the frequency-modulated wireless channel exceeds a first noise threshold; If not, controlling the first microphone to enter a dormant state; wherein the second noise threshold is greater than the first noise threshold; The method further comprises: when acquiring the noise-reduced host explanation information transmitted by the wireless transmitter, simultaneously acquiring its noise reduction parameters; and performing secondary noise reduction on the host explanation information based on the noise reduction parameters in the wireless receiver; The method further includes: when performing secondary noise reduction on the host's explanation information based on the noise reduction parameter in the wireless receiver, controlling the first microphone to enter a dormant state; The method further comprises: In the process of monitoring the wireless channel noise between the wireless receiver and the wireless transmitter, if the monitored wireless channel noise exceeds a first noise threshold, waking up the first microphone; Based on the sound picked up by the first microphone, active noise reduction is performed on the host's explanation information played by the wireless receiver; The method further comprises: If the period during which the frequency-modulated wireless channel noise exceeds the first noise threshold is less than a specified period of time, the first microphone is controlled to remain in a dormant state.

2. The method according to claim 1, characterized in that in, At the current noise reduction optimization level, the current overflow sound information is obtained through the first microphone, and the noise reduction optimization level of the host's explanation information is updated according to the current overflow sound information.

3. The method according to claim 1, characterized in that The method further comprises: If the wireless receiver is provided with more than two first microphones, external noise is collected by one of the first microphones, and the remaining first microphones collect actual overflow sound generated by the test guide sound; The overflow sound information is obtained by filtering the actual overflow sound through external noise.

4. A control device for an embedded microphone, characterized in that: For use in the method described in any one of claims 1 to 3, the device comprises: An initial test module, used for controlling the wireless receivers to play a test guide tone when one or more wireless transmitters of the first lecturer are paired with one or more wireless receivers; A receiving-end noise pickup module, used for collecting overflow sound information generated by the test guide sound through the first microphone of each wireless receiver; A wearing state analysis module, used for analyzing the wearing state information of each wireless receiver according to the difference in sound intensity between the overflow sound information and the test guide sound; The receiving end noise reduction module amends the preset first noise reduction parameter according to the wearing state information of each wireless receiver to set the noise reduction optimization degree of each wireless receiver; The information playback module is used to perform noise reduction processing on the host's explanation information based on the second microphone of the wireless transmitter and the first microphone of the wireless receiver, and then transmit it to the paired wireless receiver. Each wireless receiver performs noise reduction optimization on the host's explanation information and then plays it to realize the explanation.

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