Control method and wearable device

Abstract

The present application discloses a control method and a wearable device for controlling a control module connected to the wearable device, wherein the wearable device comprises at least one microphone. The microphone can detect a pulse signal generated when a user covers his ear. The number of times that the pulse signal is detected in an instruction input period is transmitted to the control module as a basis for the control module to execute a corresponding function. The embodiment of the present application has the advantage of realizing a simple human-machine interface, and eliminating the trouble of precise fingertip control in the traditional method.

Description

TECHNICAL FIELD

[0001] The present application relates to a wearable device, and in particular, to a human-machine interface implemented on a true wireless earphone. BACKGROUND

[0002] A conventional true wireless stereo (TWS) earphone is connected to a mobile phone or a broadcasting device through Bluetooth, and controls the broadcasting of music, answers a phone call, or invokes a specific application through a simple user interface. For example, a user can use tapping or touching (long pressing) on the true wireless earphone to make the mobile phone execute commands such as playing / pausing music, answering a phone call, skipping a previous song / next song, and so on.

[0003] However, since the true wireless earphone is designed to be compact and small in size, the area that can be operated by tapping is very small after being worn in the ear, which is not very convenient for a user who is too busy to use fingers to operate finely. Therefore, an improved human-machine interface is needed to be developed. SUMMARY

[0004] To solve the above technical problems, the present application is implemented as follows:

[0005] The present application provides a new control method applicable to a wearable device for controlling a control module, wherein the wearable device includes at least one microphone. The microphone can be disposed inside or outside the ear of the wearable device, each having different detection applications.

[0006] In an embodiment, when the microphone detects a pulse signal, an instruction input period is triggered. The wearable device can detect multiple pulse signals during the instruction input period. After the instruction input period ends, the wearable device can transmit the total number of detected pulse signals to the control module as a basis for the control module to execute corresponding functions.

[0007] The wearable device can be a true wireless earphone, a wired earphone, or a virtual reality helmet, etc. application device with a microphone.

[0008] The instruction input period is a self-definable value, and the preset value can be one second or two seconds.

[0009] The total number of pulse signals detected by the wearable device and the corresponding functions are self-definable. For example, different numbers can correspond to at least one of the following different functions: pause / replay, volume up, volume down, forward skip, backward skip, call voice assistant, previous song, next song, record, invoke self-defined application, and power off.

[0010] The microphone detects a pulse signal in one embodiment as follows. The microphone can be in a state of continuously collecting sound, wherein the sound has a reference intensity. The specific physical definition of the pulse signal is that, within a few milliseconds, for example, 50 milliseconds, the energy is suddenly increased by a multiple, for example, five times or more than ten times, and then returns to the vicinity of the reference intensity or below. When the received signal meets the above conditions, it can be determined that the microphone is receiving a touch or covering action.

[0011] In one embodiment, when the microphone confirms that a pulse signal is received during a non-instruction input period, an instruction input period is triggered, and timing and counting are started. The instruction input period is ended when the timing length exceeds the instruction input period or the time of not receiving a new pulse signal exceeds an idle time limit.

[0012] Further, in the process of collecting sound by the microphone, the ambient noise intensity can also be distinguished from the sound collected by the microphone. After each pulse signal is received, the microprocessor can compare the time length of the decrease of the ambient noise intensity with multiple intervals to determine the action type of the pulse signal. For example, in the case of a light touch, the ambient noise intensity before and after receiving the pulse signal changes little. In the case of covering the microphone with a palm, a significant decrease in the ambient noise intensity after receiving the pulse signal can be detected. The time length of the covering action can be used to distinguish the meaning of the input instruction. For example, a covering action of less than 500 milliseconds can be determined as a short covering, and a covering action of more than 500 milliseconds can be determined as a long covering.

[0013] Further, in the process of collecting sound by the microphone, if the microphone is an active feedback microphone installed inside the ear of the wearable device, whether a wearing action or an removing action is detected can also be determined according to the degree of influence of the air pressure change on the diaphragm of the microphone. For example, when wearing, the air pressure in the ear is large, and the diaphragm vibrates inward. In contrast, when removing, the air pressure in the ear becomes small, and the diaphragm vibrates outward. The phases of the pulse signals received in the two cases are different, which can be used as a basis for determining whether it is a wearing or removing action.

[0014] Further, the control method of the embodiment can convert all combinations of action types received during the instruction input period into a digital command code. Finally, the command code is transmitted to the control module as the basis for the control module to perform the corresponding function.

[0015] The application further proposes an embodiment of a wearable device. The wearable device includes at least one microphone for collecting sound, and a microprocessor for processing data and controlling and managing the wearable device. In this way, the wearable device executes the aforementioned control method.

[0016] In one embodiment, the wearable device can be a true wireless earphone, which includes a Bluetooth module connected to the microprocessor for data exchange with the control module through Bluetooth protocol.

[0017] The microphone can be a talk microphone or a noise reduction microphone located outside the ear of the true wireless earphone. The microphone can also be an active feedback microphone arranged inside the ear of the true wireless earphone. The solution provided by the present application is mainly to use the characteristics of the pulse signal to determine whether the user has the action of covering the microphone, and to execute the corresponding command according to the action combination. In this way, the user does not need to perform a particularly accurate operation action to achieve the effect of controlling the device, and the inconvenience of the conventional method of touching a specific sensing part with a finger is solved. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings, which are included to provide a further understanding of the present application, constitute a part of the present application and illustrate embodiments of the present application and the description thereof serve to explain the present application and do not limit the present application. In the drawings:

[0019] Figure 1 is a traditional true wireless earphone product appearance;

[0020] Figure 2 is a signal feature analysis diagram of one of the embodiments of the present application;

[0021] Figure 3 is a true wireless earphone architecture diagram in the embodiments of the present application;

[0022] Figure 4 is a control method flowchart of one of the embodiments of the present application; and

[0023] Figure 5 is a control method flowchart of another of the embodiments of the present application. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0025] Figure 1 is a traditional true wireless earphone product 100 appearance. Figure 1 The true wireless earphone product 100 shown in the figure is a common wearable device at present. Its structure can be roughly divided into an ear outside part and an ear inside part. Figure 1The loudspeaker 120 and the internal microphone 130 in the earphone 100 belong to the earphone-in-ear part, i.e., when worn, they will enter the ear canal of the user. Figure 1 The external microphone 110 in the earphone 100 belongs to the earphone-out-ear part, and its functions at least include receiving the user's speech or receiving the ambient noise. In some conventional products, the external microphone 110 can be implemented by a combination of multiple different microphones, such as a non-directional noise reduction microphone for collecting ambient noise, or a directional microphone array for collecting user's voice. The embodiments of the present application to be introduced below are not limited to the use of any specific microphone, and therefore the detailed types of the microphone will not be described further.

[0026] Figure 2 The signal feature analysis diagram is one of the embodiments of the present application. The signal input from the microphone can be represented as signal intensity on the time axis. The specific unit can usually be millivolt (mV) or decibel (dB). Before receiving the pulse signal, there is usually a baseline intensity. The intuitive definition of the pulse signal is a signal that instantaneously explodes and then returns to the baseline. The actual value range of the instant and the explosion can be different depending on the application. For example, in the case of detecting the user's ear covering action in the present embodiment, the pulse signal can be defined as a signal that the decibel value suddenly increases by a certain multiple, such as three times, five times, or ten times or more within a few milliseconds, for example, 50 milliseconds, and then returns to the vicinity of or below the baseline intensity. It can be understood that the value definition in the example is for illustrative purposes only and is not an absolute limit. Those skilled in the art can adjust it as needed. When the received signal meets the above conditions, it can be determined that the microphone is receiving a touch or covering action. For example, when the user's hand is raised to cover the microphone, the signal intensity suddenly increases due to air pressure. If the user's hand continues to cover the microphone, the microphone will detect that the signal intensity will return to below the original baseline intensity, forming a baseline intensity difference D1. Only when the user's hand moves away from the microphone will the baseline intensity return. At this point, the length of time T1 that the user covers the microphone can be determined. According to this principle, it can be inferred that if the user only touches or taps the microphone, only the pulse signal will be detected, and the baseline intensity difference D1 will not be detected.

[0027] Figure 3 The architecture diagram of the true wireless earphone 300 in the present embodiment is shown in FIG. 3. Figure 3 The true wireless earphone 300 in the present embodiment includes at least one microphone for collecting sound. For example, corresponding to the earphone-in-ear part of the earphone 100, the true wireless earphone 300 includes at least one microphone 310 for collecting sound. Figure 1The device includes an external microphone 110 and an internal microphone 130. The external microphone 110 can typically be a call microphone or a noise-canceling microphone. The internal microphone 130 is typically an active feedback microphone. For traditional true wireless earbuds with ambient noise cancellation (ENC) functionality, changes in the ambient noise cancellation microphone signal can be directly used for earbud control. For earbuds without ENC functionality, the call microphone can be used directly to implement embodiments of the invention at a lower cost.

[0028] Figure 3 The true wireless earbuds 300 also include a microprocessor 320, which is integrated to handle data processing and component control management. The microprocessor 320 is typically a commercially available digital processor chip, but it can also be a custom-designed application-specific chip. Furthermore, the true wireless earbuds 300 also include an audio module 340, which can be an audio chip controlled by the microprocessor 320. This chip receives audio data from the Bluetooth module 310 and converts it into analog signals for transmission through a Bluetooth module such as... Figure 1 The speaker 120 outputs data. A Bluetooth module 310 is included, connected to the microprocessor, for exchanging data with a control module (not shown) via the Bluetooth protocol.

[0029] In some embodiments, the control module can generally be control hardware and / or software in a computer device such as a mobile phone, tablet, smartwatch, or laptop. The control module can communicate with the true wireless earbuds 300 through a communication module in the computer device such as a mobile phone, tablet, smartwatch, or laptop. In another embodiment, the true wireless earbuds 300 can function as an independent media playback device, without needing to transmit audio data and control signals through an external device. The true wireless earbuds 300 themselves can implement music playback functionality through memory or a flash memory card (not shown), according to the embodiments of the control method described above. In the case of independent operation, the control module is located in the true wireless earbuds 300 and is electrically connected to relevant components in the true wireless earbuds 300. For example, the control module can be composed of... Figure 3 The microprocessor 320, memory 324, and flash memory slot (not shown) are combined with related control units and / or software, and are electrically connected to Bluetooth module 310, audio module 340, speaker 120, external microphone 110, and / or internal microphone 130. Numerous product architectures are derived from the above basic architecture, which will not be described in detail here. The following embodiments are illustrated with a configuration where the control module is located in a computer device such as a mobile phone, tablet, smartwatch, or laptop, and is connected to the true wireless earphone 300 via a communication module. However, it is understood that in different embodiments, the configuration could also be changed so that the control module is located within the true wireless earphone 300.

[0030] by Figure 3The method of controlling the control module (not shown) of the true wireless earphone 300 is as follows. First, after the user wears the true wireless earphone 300, the user can control the playback device by covering the ear with the palm. For example, covering the ear once controls the playback device to play or answer a call. Covering the ear twice controls the playback device to skip to the next song, and covering the ear three times controls the playback device to skip to the previous song. When the user performs the ear covering action, a pulse signal is generated. The present embodiment utilizes a microphone to detect the pulse signal generated when the ear is covered. When a pulse signal is detected during a non-instruction input period, an instruction input period is triggered. In the control method, the microphone is not limited to the external microphone 110 or the internal microphone 130.

[0031] The true wireless earphone 300 can detect multiple pulse signals during the instruction input period. After the instruction input period ends, the true wireless earphone 300 can transmit the total number of pulse signals detected to the control module as a basis for the control module to execute corresponding functions. The instruction input period is a self-definable value. For example, the default value can be one second or two seconds. On the other hand, the total number of pulse signals detected by the true wireless earphone 300 and the corresponding functions are also self-definable. For example, different numbers of pulse signals can correspond to at least one of the following different functions: pause / play, increase volume, decrease volume, skip forward, skip backward, previous song, next song, record, invoke a self-defined application, call a voice assistant, and power off. These self-defined functions can be adjusted through a dedicated application of a mobile phone via Bluetooth and stored in the memory of the true wireless earphone 300. Another way to define the value is to store the user's options directly by the application or operating system of the mobile phone.

[0032] Figure 3 The microphone in the true wireless earphone 300 can be in a state of continuously collecting sound or can be awakened by a pulse signal in a sleep power saving state to start an instruction input period. For example, when the microphone confirms that a pulse signal is received during a non-instruction input period, an instruction input period is triggered, and timing and counting are started. The microprocessor 320 generally has a built-in timer 322 (Real Time Clock; RTC) and basic memory 324, which can fully implement the functions of timing and counting. The end condition of the instruction input period can include at least the following two situations: when the timing length exceeds the instruction input period, or when no new pulse signal is received for more than an idle time limit, the instruction input period is considered to be ended. In general, the instruction input period is set to two seconds, which is a reasonable range acceptable to the user. In addition, when the user does not continuously input a pulse signal for more than 0.5 seconds, i.e., does not continuously perform the ear covering action, it can be determined that the user has completed the input, and the next step is run according to the counting result of the pulse signal.

[0033] The control method of generating pulse times by multiple ear covering actions is more convenient than the traditional method of clicking a specific area with a finger.

[0034] In further embodiments, in addition to detecting the number of pulse signals, the time length of the ear covering action can be further distinguished according to Figure 2 the signal characteristics, thereby making the input method of control instructions more diversified and detailed. The specific method is as follows. During the process of collecting sound by the microphone, whether the microphone is an external microphone 110 installed outside the ear of the wearable device, such as a talk microphone or a voice microphone, or an internal microphone 130, the microprocessor 320 can distinguish the ambient noise intensity from the collected sound. During the period of continuous hand covering of the ear, the intensity of the ambient noise will obviously decrease. After receiving each pulse signal, the microprocessor 320 can compare the time length of the decrease in ambient noise intensity with multiple intervals to determine the action type of the pulse signal. For example, in the case of the user only tapping the true wireless earphone 300, the change in ambient noise intensity before and after the microphone receives the pulse signal is almost unchanged. In the case of the microphone being covered by the palm, it can be detected that the ambient noise intensity significantly decreases after receiving the pulse signal. The time length of the covering action can be used to distinguish the meaning of the input instruction. For example, a covering action of less than 500 milliseconds can be determined as short covering, and a covering action of more than 500 milliseconds can be determined as long covering.

[0035] Further, during the process of collecting sound by the microphone, if the microphone is an internal microphone 130, such as an active feedback microphone, the degree of influence of the change in air pressure on the diaphragm of the microphone can also be used to determine whether a wearing action or an removing action is detected. In most cases, when the user wears the true wireless earphone 300, the air pressure in the ear is large, and the diaphragm vibrates inward.

[0036] On the contrary, when the true wireless earphone 300 is removed, the air pressure in the ear decreases, and the diaphragm vibrates outward. The phase of the received pulse signal is different in the two cases, which can be used as a basis for determining the wearing or removing action.

[0037] In a preferred embodiment, if the microprocessor 320 detects the wearing condition, it can transmit a play command through the Bluetooth module 310 to make the control module automatically play. The played sound is transmitted to the audio module 340 through the Bluetooth module 310, and finally transmitted through the loudspeaker 120 such as Figure 1 On the contrary, if the microprocessor 320 detects the removing condition, it can transmit a pause command through the Bluetooth module 310 to make the control module stop playing the music.

[0038] In the above embodiments, after the signal characteristics of the user's actions are determined during the instruction input period, the different actions such as tapping, short covering, long covering, putting on, and taking off can be easily identified. Therefore, it can be understood that through the arrangement and combination of these different actions, the control instructions that can be implemented in practice will be very diverse, breaking through the limitations of traditional technology. Figure 3 The true wireless earphone 300 finally combines all the action types collected, converts them into digital command codes in the microprocessor 320, and finally transmits the command codes to the control module through the Bluetooth module 310 as the basis for the control module to perform corresponding functions.

[0039] Figure 4 is one of the control method flowcharts of the embodiments of the present application. Figure 4 The above method of detecting the pulse signal is summarized into several key steps for easy understanding. In step 401, the detection of the pulse signal is started. In general cases, the microphone in the true wireless earphone 300 can be in a continuous sound receiving state. If the microphone is in a sleep power saving state, the microphone can also be awakened immediately by various sensing methods when the user suddenly touches or covers the true wireless earphone 300, for example, by detecting the sudden change in the signal of the microphone diaphragm capacitance potential using one of the pins of the microprocessor 320. In this way, the true wireless earphone 300 is triggered to enter an instruction input period, for example, one second or two seconds. In step 403, the total number of pulse signals detected during the instruction input period is accumulated. Usually, the user will directly touch or cover the ear several times in succession. Therefore, the first pulse received in step 401 is also counted in the total number. In step 405, the continuous detection of the pulse signal is ended after waiting for the instruction input period to expire, that is, after waiting for one second or two seconds. Another possible case of ending the instruction input period is that when the true wireless earphone 300 does not detect a pulse signal for more than a certain period of time, for example, more than 0.5 seconds, it is judged that the user has ended the action, and the instruction input period can be ended early to continue the next step. Finally, in step 407, the corresponding command is executed according to the accumulated total number of pulse signals. Specifically, the accumulated total number can be in the form of a number, which is transmitted to the control module through the Bluetooth module 310, as the basis for the control module to perform the corresponding function. Figure 3Bluetooth module 310 transmits to the control module, and the operating system of the control module judges what command should be executed according to the pre-set instruction table, and executes accordingly. The corresponding way of the cumulative total and the execution command can also be different according to the mode of the control module at that time. For example, if the control module is in the state of playing multimedia or music, the corresponding executed command can be pause, fast forward, rewind, previous song, next song, etc. If the control module is in the phone mode, the corresponding executed command can be dialing a phone, hanging up a phone, increasing the volume, reducing the volume, etc. If the control module is a smart device, such as a mobile phone, a tablet, a smart watch, a computer, etc., a dedicated application can be designed to provide a customized human-computer operation interface, and various operation possibilities can be unlimited.

[0040] Figure 5 is another control method flowchart of the embodiment of the present application. As described above, in addition to using the number of basic pulse signals, the embodiment of the present application can further judge various user action types from the characteristics of the pulse signals, such as tapping, short covering, long covering, putting on, or taking off, etc. Using the diversity of these actions, more detailed control methods can be combined. In step 501, the microphone detects the covering action, and then starts the continuous action detection mode, that is, enters a command input period. In step 503, during the command input period, the number of covering actions and the time of each covering action are recorded. The microprocessor in the true wireless earphone is generally a commercially available digital processor or a special application chip, which has simple memory, timing and counting functions, which is sufficient to implement this step. In step 505, the microprocessor can judge whether the time spent since triggering the command input period exceeds the length of the command input period. For example, if the command input period is defined as two seconds in advance, the total time of the input action reaches two seconds to stop inputting, and enter the next step 509. Another case is that if the microphone does not collect any action for more than half a second, it is judged that the user has ended the command input. At this time, step 509 is also entered.

[0041] As long as the command input period has not ended, the flow will repeat step 503 to continuously record the number of covering actions and the time of each covering action. During the command input period, an additional step 507 can be performed to check special cases. For example, if the covering action is maintained for more than two seconds, the user may wish to turn off the power, or the true wireless earphone 300 has been stored in a closed package. In this case, step 513 is performed to automatically turn off the power to save power, or automatically pause the playing music. Other actions that can cause the device to turn off can also be detected and executed. For example, when the microprocessor 320 judges from the characteristics of the pulse signal that the true wireless earphone 300 has been taken off, it can be turned off or paused.

[0042] In step 509, after completing the command input, the microprocessor 320 converts the combination of the number of times of covering the ear and the length of time of each time of covering the ear into a command code, and transmits the command code to the control module through the Bluetooth module 310 for executing the corresponding command. For example, the user can easily combine more than ten different commands in two seconds by using different actions such as a light touch, a short covering, a long covering, and the like. Through the operating system or the application program on the control module, the multifunctional and convenient human-machine interface can be achieved.

[0043] The solution provided by the present application mainly uses the characteristics of the pulse signal to determine whether the user has the action of covering the microphone, and executes the corresponding command according to the action combination. In this way, the user does not need to perform a particularly accurate operation action to achieve the effect of controlling the device, and the inconvenience of the conventional method that can only touch a specific sensing part with a finger is solved. In addition, the present application focuses on the application of the signal characteristics received through the microphone, and as long as the general wearable device has a microphone, regardless of the type of microphone, the improved control method provided by the present application can be applied without the need to change the design at additional cost. For example, the control method embodiment provided by the present application can be applied not only to the true wireless earphone 300, but also to a wired earphone or a virtual reality helmet having a microphone.

[0044] It should be noted that in this document, the terms "comprise", "comprising", or any other variant thereof are intended to cover non-exclusive inclusions, so that processes, methods, articles, or devices that include a series of elements not only include those elements, but also include other elements not explicitly listed, or include elements inherent to such processes, methods, articles, or devices. Without more limitations, the element defined by the statement "comprises a" does not exclude the presence of another identical element in the process, method, article, or device that includes the element.

[0045] The embodiments of the present application are described above in combination with the drawings, but the present application is not limited to the specific embodiments described above, and the specific embodiments described above are only illustrative and not limiting. Those skilled in the art can make many forms under the inspiration of the present application without departing from the scope of the present application and the scope protected by the claims.

Claims

1. A control method suitable for a wearable device, wherein the wearable device comprises at least one microphone, characterized in that, The wearable device is a single true wireless earphone, and the control method comprises: detecting a pulse signal by the microphone, the microphone continuously collecting sound, wherein the sound has a reference intensity, the reference intensity being the intensity before the microphone receives the pulse signal; and transmitting the number and phase of the pulse signal detected in the instruction input period to a control module, the control module performing a corresponding function according to the number or phase of the pulse signal; wherein the pulse signal is a signal that is suddenly strong by a first multiple within a plurality of milliseconds and then returns to below the reference intensity, and forms a reference intensity difference, which is used to determine that the microphone is subjected to a covering action; the step of detecting a pulse signal by the microphone further comprises: distinguishing the intensity of environmental noise from the sound collected by the microphone; after distinguishing the intensity of the environmental noise, comparing the duration of the weakening of the intensity of the environmental noise with a plurality of gradations to determine the type of action triggering the pulse signal, the duration of the weakening of the intensity of the environmental noise being the same as the duration of the covering action on the microphone; wherein the step of detecting a pulse signal by the microphone further comprises: determining the type of action of the pulse signal according to the phase of the pulse signal, the type of action of the pulse signal being the type of action of putting on or taking off the true wireless earphone, wherein the phase corresponds to the vibration direction of the diaphragm of the microphone.

2. The control method according to claim 1, characterized by, wherein: the instruction input period is a self-definable value.

3. The control method according to claim 1, characterized by, wherein: the corresponding function is self-definable and corresponds to at least the following functions: pause / replay, volume up, volume down, forward skip, backward skip, call voice assistant, answer phone, previous song, next song, record, wake up self-defined application, and power off.

4. The control method of claim 1, wherein: The step of detecting a pulse signal by the microphone comprises: when the microphone receives the pulse signal in a non-instruction input period, triggering timing and counting to start the instruction input period.

5. The control method according to claim 4, characterized by, when the length of the timing exceeds the instruction input period or the time of not receiving a new pulse signal exceeds an idle time limit, ending the instruction input period.

6. The control method of claim 1, wherein: The step of detecting a pulse signal by the microphone further comprises: when the microphone is in a non-instruction input period, detecting a signal of sudden change in capacitance or potential of the diaphragm of the microphone through a pin in the control module, triggering timing and counting to start the instruction input period.

7. The control method according to claim 1, characterized by, The type of action at least includes: tapping, short covering, long covering, putting on, or taking off.

8. The control method according to claim 1, characterized by, Further comprising: converting the combination of the type of action received in the instruction input period into a digital command code; and transmitting the command code to the control module, the control module performing the corresponding function according to the command code.

9. A wearable device comprising at least one microphone for collecting sound; and a microprocessor for processing data and controlling the wearable device; characterized in that, The wearable device is a single true wireless earphone, which is used to implement the control method according to any one of claims 1 to 8, wherein: the microphone is also used to detect a pulse signal; the microprocessor is configured to transmit the number of the pulse signal detected in the instruction input period to the control module, so that the control module performs a corresponding function according to the number of the pulse signal.

10. The wearable device of claim 9, wherein, The true wireless earphone comprises a Bluetooth module connected to the microprocessor, which is used for data intercommunication with the control module through Bluetooth protocol.

11. The wearable device of claim 10, wherein, The microphone is a talk microphone or a noise reduction microphone on the true wireless earphone.

12. A control method suitable for a wearable device, wherein the wearable device comprises at least one microphone, characterized in that, The wearable device is a single true wireless earphone, and the control method comprises: Detecting a pulse signal by the microphone, and continuously collecting sound by the microphone, wherein the sound has a reference intensity, which is the intensity before the microphone receives the pulse signal; and Transferring the pulse signal detected in the instruction input period to the control module, and executing corresponding functions by the control module according to the pulse signal; The pulse signal is a signal that is suddenly intensified by a first multiple within several milliseconds and then returns to below the reference intensity, and forms a reference intensity difference, which is used for determining that the microphone is subjected to a covering action. The step of detecting a pulse signal by the microphone further comprises: Judging the action type of the pulse signal as the action type of wearing the true wireless earphone or the action type of taking off the true wireless earphone according to the phase of the pulse signal, wherein the phase corresponds to the vibration direction of the diaphragm of the microphone; and When the microphone is in a non-instruction input period, triggering timing and counting to start the instruction input period by detecting the signal of the sudden change of the capacitance or potential of the diaphragm of the microphone through a pin in the control module.

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