filler

Abstract

The application provides a sound compensator, comprising a shell, a sound pickup, a speaker and a control device, the shell is in a strip shape, and a mounting cavity is arranged in the shell; the sound pickup is arranged in the mounting cavity and used for acquiring external sound; the speaker is arranged in the mounting cavity and connected with the shell through a flexible connecting piece, and the speaker is suspended in the shell through the flexible connecting piece; the sound pickup and the speaker are electrically connected with the control device, and the control device is used for receiving the external sound acquired by the sound pickup and controlling the speaker to play. In the embodiment, the speaker is hung in the shell through the flexible connecting piece, the vibration generated when the speaker plays is absorbed through the flexible connecting piece, the conduction of sound waves is prevented, and the technical effect of suppressing howling is achieved.

Description

Technical Field

[0001] This application relates to the field of audio transceiver technology, and more specifically to a filler. Background Technology

[0002] In portable electronic devices, smart speakers, video conferencing terminals, walkie-talkies, loudspeakers, and intelligent voice interaction products, the integrated design of microphones and speakers is becoming increasingly common. This design helps reduce device size, simplify structure, lower costs, and improve user experience. However, because the microphone and speaker are extremely close in physical space, the acoustic coupling path is short and direct, making it highly susceptible to acoustic feedback and howling problems.

[0003] The mechanism of acoustic feedback howling is as follows: the sound signal output from the speaker propagates through the air or vibrates through the device casing, is picked up again by the microphone, amplified by the amplifier, and then output again by the speaker, forming a positive feedback closed loop. When the loop gain is greater than 1 and the phase meets the in-phase condition, the system will oscillate, resulting in a sharp howling sound. This not only seriously interferes with normal audio communication and playback, but may even damage the speaker or power amplifier circuit.

[0004] Existing techniques for suppressing feedback mainly include: increasing the spatial distance between the microphone and the speaker, using physical vibration isolation structures, using directional microphones, adjusting the device placement angle, or reducing the system volume. However, in a compact, integrated structure, spatial distance is limited, and existing physical isolation methods are insufficient to completely block sound wave transmission. Therefore, there is an urgent need for a filler that can suppress feedback in compact, integrated structures with limited spatial distance. Summary of the Invention

[0005] In view of the technical problems existing in the background art, this application provides a filler that suspends a speaker in the housing through a flexible connector. The flexible connector absorbs the vibration generated by the speaker when it is playing, preventing the transmission of sound waves from being blocked, thereby achieving the technical effect of suppressing howling.

[0006] This application provides a filler, including:

[0007] The housing is elongated and has an internal mounting cavity;

[0008] A microphone, which is disposed within the mounting cavity, is used to acquire external sound;

[0009] A loudspeaker is placed inside the mounting cavity and connected to the housing via a flexible connector. The loudspeaker is suspended inside the housing via the flexible connector.

[0010] The control device is electrically connected to both the microphone and the speaker. The control device is used to receive external sounds acquired by the microphone and control the speaker to play them.

[0011] In some embodiments, the pickup is disposed at the bottom of the housing, and the speaker is disposed at the top of the housing.

[0012] In some embodiments, the flexible connector includes:

[0013] The main body has an umbrella-shaped structure, including a top and an umbrella edge, and the top of the main body has an opening;

[0014] A central conduit is disposed on the main body, with one end of the central conduit located at the opening and the other end of the central conduit used to connect to the speaker;

[0015] A fixing buckle is provided on the umbrella edge of the main body, and the main body is connected to the shell through the fixing buckle.

[0016] In some embodiments, the housing is provided with a first through hole, and the main body extends out of the housing through the first through hole.

[0017] In some embodiments, an alarm device is also included, which is disposed within the mounting cavity and electrically connected to the control device for issuing an alarm.

[0018] In some embodiments, a pull-cord alarm switch is also included, which is disposed on the housing and electrically connected to the alarm device, and is used to control the alarm device to issue an alarm.

[0019] In some embodiments, the control device includes:

[0020] An audio input circuit module is used to receive external sounds received by the microphone;

[0021] The signal processing circuit module is used to process the signals from the audio input circuit module to obtain a processed signal;

[0022] The power amplifier circuit module is used to amplify the processed signal;

[0023] An audio output circuit module is used to control the speaker to play sound according to the processed signal.

[0024] In some embodiments, the control device further includes a power supply circuit module for outputting a stable current and voltage.

[0025] In some embodiments, the control device further includes an alarm module connected to the power supply circuit module, which is used to detect the current and voltage output by the power supply circuit module and to issue an alarm when the current and voltage output by the power supply circuit module do not meet the preset value.

[0026] In some embodiments, the control module further includes a wireless radio frequency circuit module, which is electrically connected to the signal processing circuit module and is used for communication between the signal processing circuit module and external devices.

[0027] Beneficial Effects: This application provides a microphone, including a housing, a microphone, a speaker, and a control device. The housing is elongated and has a mounting cavity inside. The microphone is disposed within the mounting cavity and is used to acquire external sound. The speaker is placed within the mounting cavity and connected to the housing via a flexible connector, and is suspended within the housing via the flexible connector. Both the microphone and the speaker are electrically connected to the control device, which receives the external sound acquired by the microphone and controls the speaker to play it. In this embodiment, the speaker is suspended within the housing by the flexible connector, which absorbs the vibrations generated by the speaker during operation, preventing obstruction of sound wave transmission, thereby achieving the technical effect of suppressing howling.

[0028] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0029] To more clearly illustrate the technical solution of this application, the accompanying drawings used in this application will be briefly described below. Obviously, the drawings described below are merely some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without any creative effort.

[0030] Figure 1 This is a schematic diagram of the structure of the filler in the embodiment of this application;

[0031] Figure 2 This is an exploded view of the filler in the embodiments of this application;

[0032] Figure 3 This is a schematic diagram of the structure of the flexible connector in the embodiments of this application;

[0033] Figure 4 This is an exploded view of the alarm device portion in an embodiment of this application;

[0034] Figure 5This is a structural framework diagram of the control device in the embodiments of this application;

[0035] Figure 6 This is a circuit schematic diagram of the signal processing circuit module in an embodiment of this application;

[0036] Figure 7 This is a circuit schematic diagram of the audio output circuit module in an embodiment of this application;

[0037] Figure 8 This is a circuit schematic diagram of the audio input circuit module in an embodiment of this application;

[0038] Figure 9 This is a circuit schematic diagram of the power amplifier circuit module in the embodiments of this application;

[0039] Figure 10 This is a circuit schematic diagram of the audio processing chip section in an embodiment of this application;

[0040] Figure 11 This is a circuit schematic diagram of the power supply circuit module in an embodiment of this application;

[0041] Figure 12 This is a circuit diagram of the alarm circuit module in the embodiments of this application;

[0042] Figure 13 This is a circuit schematic diagram of the logic control chip section in the embodiments of this application;

[0043] Explanation of reference numerals in the attached figures:

[0044] 1. Shell; 11. First through hole;

[0045] 2. Microphone; 3. Loudspeaker; 4. Control device;

[0046] 5. Flexible connectors;

[0047] 51. Main body; 52. Central conduit; 53. Fixing buckle; 54. Umbrella edge;

[0048] 6. Alarm device; 7. Pull-cord alarm switch. Detailed Implementation

[0049] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0050] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0051] In this document, the term "comprising" indicates the presence of a described feature, integral, step, operation, element, and / or component, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or collections thereof. The terms "comprising," "including," "having," and variations thereof all mean "including but not limited to," with exclusions being otherwise specifically emphasized. Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying one or more of the feature. In the description of embodiments of this application, unless otherwise stated, "a plurality of" means two or more.

[0052] In this text, the term "and / or" simply describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. Additionally, the character " / " in this text generally indicates that the preceding and following related objects have an "or" relationship.

[0053] In portable electronic devices, smart speakers, video conferencing terminals, walkie-talkies, loudspeakers, and intelligent voice interaction products, the integrated design of microphones and speakers is becoming increasingly common. This design helps reduce device size, simplify structure, lower costs, and improve user experience. However, because the microphone and speaker are extremely close in physical space, the acoustic coupling path is short and direct, making it highly susceptible to acoustic feedback and howling problems.

[0054] The mechanism of acoustic feedback howling is as follows: the sound signal output from the speaker propagates through the air or vibrates through the device casing, is picked up again by the microphone, amplified by the amplifier, and then output again by the speaker, forming a positive feedback closed loop. When the loop gain is greater than 1 and the phase meets the in-phase condition, the system will oscillate, resulting in a sharp howling sound. This not only seriously interferes with normal audio communication and playback, but may even damage the speaker or power amplifier circuit.

[0055] Existing techniques for suppressing feedback mainly include: increasing the spatial distance between the microphone and the speaker, using physical vibration isolation structures, using directional microphones, adjusting the device placement angle, or reducing the system volume. However, in a compact, integrated structure, spatial distance is limited, and existing physical isolation methods are insufficient to completely block sound wave transmission. Therefore, there is an urgent need for a filler that can suppress feedback in compact, integrated structures with limited spatial distance.

[0056] To address the technical problem of how to provide a filler that can suppress feedback in a compact, integrated structure with limited space, this application provides a filler in which a speaker is suspended inside a housing by a flexible connector. The flexible connector absorbs the vibrations generated by the speaker, preventing the obstruction of sound wave transmission, thereby achieving the technical effect of suppressing feedback.

[0057] like Figure 1-4 As shown in the illustration, this application provides a microphone, including: a housing 1, a microphone 2, a speaker 3, and a control device 4. The housing 1 is elongated and has a mounting cavity inside. The microphone 2 is disposed within the mounting cavity and is used to acquire external sound. The speaker 3 is placed within the mounting cavity and connected to the housing 1 via a flexible connector 5, and is suspended within the housing 1 by the flexible connector 5. Both the microphone 2 and the speaker 3 are electrically connected to the control device 4. The control device 4 is used to receive the external sound acquired by the microphone 2 and control the speaker 3 to play the sound. In this embodiment, the speaker 3 is suspended within the housing 1 by the flexible connector 5. The flexible connector 5 absorbs the vibrations generated by the speaker 3 during operation, preventing the obstruction of sound wave transmission, thereby achieving the technical effect of suppressing howling.

[0058] Specifically, when the speaker 3 is working, it generates mechanical vibration. If the speaker 3 is rigidly connected to the housing 1, the vibration will be directly transmitted to the housing 1, and then to the pickup 2, forming a short-circuit structural feedback howl. In this embodiment, with the flexible connector 5, the vibration energy of the speaker 3 is first absorbed and dissipated (converted into internal energy) by the flexible connector 5, with only a very small amount of energy being transmitted to the housing 1. At the same time, the flexible connector 5 cuts off the rigid force transmission path from the speaker 3 to the housing 1 to the pickup 2, realizing the mechanical decoupling of the speaker 3 from the housing 1, thereby effectively suppressing the howl caused by structural conduction. It significantly reduces structural conduction howl, especially in scenarios with strong mid-to-low frequency vibrations; it does not rely on complex digital algorithms, but is implemented purely by physical structures, with no additional power consumption; the flexible connector 5 also has a shock absorption function, which can improve the playback clarity of the speaker 3 and reduce sound coloration.

[0059] Secondly, in this embodiment, the housing 1 has a long, narrow structure, which is compact and easy for users to hold and operate with one hand. It can also be easily placed in a pocket, bag, or storage box, significantly improving the portability of the device. At the same time, the long, narrow shape conforms to ergonomic grip habits, making it more flexible and convenient in actual use, and facilitating quick deployment and continuous use in various scenarios. The long, narrow housing 1 design makes it easy for users to hold, store, and carry, further enhancing the practicality of the device and the user experience.

[0060] In some embodiments, the microphone 2 is located at the bottom of the housing 1, and the speaker 3 is located at the top of the housing 1. Specifically, in this embodiment, during use, the speaker 3 is directed towards the user's ear or away from the microphone 2, while the microphone 2 is closer to the sound source to be collected (such as the user's own vocal cords or an external target sound source), thereby effectively increasing the physical distance between the microphone 2 and the speaker 3 and reducing the intensity of airborne howling. Simultaneously, this top-bottom separation layout is also compatible with the elongated housing 1, making the internal structure arrangement more rational and facilitating the suspension installation of the speaker 3 by the flexible connector 5, further enhancing the howling suppression effect.

[0061] In some embodiments, the flexible connector 5 includes a main body 51, a central conduit 52, and a fixing buckle 53. The main body 51 has an umbrella-shaped structure, including a top and an umbrella edge 54, with an opening at the top. The central conduit 52 is disposed on the main body 51, with one end of the central conduit 52 located at the opening and the other end of the central conduit 52 used to connect to the speaker 3. The fixing buckle 53 is disposed on the umbrella edge 54 of the main body 51, and the main body 51 is connected to the housing 1 through the fixing buckle 53. In this embodiment, through the combined structure of the umbrella-shaped main body 51 and the central conduit 52, vibration energy can be transmitted along the central conduit 52 to the umbrella-shaped main body 51 when the speaker 3 is working, and then dispersed to the housing 1 by the umbrella edge 54 and the fixing buckle 53. At the same time, the umbrella-shaped structure itself has certain flexibility and damping characteristics, which can effectively absorb and attenuate vibration energy, reduce the transmission to the housing 1, and thus further suppress howling caused by structural conduction.

[0062] Furthermore, the central duct 52 provides stable axial positioning for the speaker 3, ensuring its centering and operational reliability in a suspended state. Through its mating structure with the speaker 3's sound outlet, the central duct 52 restricts the speaker 3's radial displacement, keeping it always on the central axis of the housing 1. This positioning ensures good centering of the speaker 3 in a suspended state, preventing it from tilting or becoming eccentric due to vibration or external forces, thus avoiding contact with the housing 1 or obstruction of sound wave transmission. Simultaneously, stable axial positioning also helps maintain the uniformity of force on the flexible connector 5, preventing localized fatigue or deformation, thereby improving the long-term reliability of the speaker 3 and ensuring stable sound output from the filler at various operating angles.

[0063] Specifically, in this embodiment, the sound outlet of the speaker 3 is located within the hollow channel of the central duct 52, facing the opening at the top of the main body 51. The sound emitted by the speaker 3 can be directly transmitted along the hollow channel of the central duct 52 to the opening of the umbrella-shaped main body 51, and then radiated outwards, thus achieving a clear, low-loss sound output path. Simultaneously, the central duct 52, while supporting the speaker 3, also serves as a sound wave guiding structure, ensuring both the vibration isolation effect of the flexible suspension and the effective propagation of sound, avoiding volume attenuation or sound quality degradation caused by enclosure or obstruction.

[0064] In some embodiments, the housing 1 is provided with a first through hole 11, and the main body 51 extends out of the housing 1 through the first through hole 11. It is understood that, in use, the portion of the main body 51 extending out of the housing 1 directly enters the user's ear, serving a similar function as an in-ear earplug for fixation and sound conduction. By extending the main body 51 into a structure that contacts the ear, there is no need to add an extra earplug head, and the sound emitted by the speaker 3 can enter the ear canal via a shorter path and less leakage after passing through the central conduit 52 and the opening of the main body 51, improving sound transmission efficiency and listening clarity. Simultaneously, as part of the flexible connector 5, the extended portion of the main body 51 provides cushioning and fit when in contact with the ear canal, improving wearing comfort, and utilizing the damping properties of the flexible material to further suppress frictional noise generated by contact or movement of the housing.

[0065] In some embodiments, an alarm device 6 is also included. The alarm device 6 is disposed in the mounting cavity and electrically connected to the control device 4 for issuing an alarm. In this embodiment, the alarm device 6 is automatically triggered when a preset condition is detected (e.g., low battery, abnormal operation of speaker 3 or microphone 2, failure of feedback suppression, or external sound exceeding a safety threshold), emitting sound, vibration, or light signals to remind the user to handle the situation in time or suspend use, thereby ensuring the safety and reliability of the device.

[0066] In some embodiments, a pull-cord alarm switch 7 is also included. The pull-cord alarm switch 7 is disposed on the housing 1 and electrically connected to the alarm device 6. The pull-cord alarm switch 7 is used to control the alarm device 6 to emit an alarm. In this embodiment, the user can conveniently and manually trigger the alarm by pulling the cord, which is suitable for scenarios requiring emergency calls for help or to alert others (such as sudden physical discomfort, accidental falls, or being in dangerous environments). The pull-cord switch has a simple structure and clear tactile feedback, and can be operated without visual confirmation, adding an active alarm function to the microphone and improving the device's safety protection capabilities and emergency response practicality.

[0067] like Figure 5 As shown, in some embodiments, the control device 4 includes: an audio input circuit module, a signal processing circuit module, a power amplifier circuit module, and an audio output circuit module; wherein, the audio input circuit module is used to receive external sounds received by the microphone 2; the signal processing circuit module is used to process the signals from the audio input circuit module to obtain a processed signal; the power amplifier circuit module is used to amplify the processed signal; and the audio output circuit module is used to control the speaker 3 to play sound according to the processed signal. In this embodiment, the audio input circuit module controls the microphone 2 to receive external sounds and transmits the received external sounds to the signal processing circuit module. After receiving the external sounds, the signal processing circuit module encodes, processes, and decodes the external sounds, and then outputs a processed signal. The power amplifier circuit module amplifies the processed signal and controls the speaker 3 to emit sound through the audio output circuit module.

[0068] Specifically, such as Figure 6-9As shown in Figure 13, in this embodiment, the output signal of the audio input circuit module is filtered by a filter network composed of capacitors C28 and C30, and the differential output values ​​are sent to the MICPI (pin 18) and MICNI (pin 19) of the signal processing chip U1. Simultaneously, the signal processing chip U1 provides a bias voltage to the microphone 2 through MICBIASS (pin 22). The analog audio signal processed by the signal processing chip U1 is output from DACL (pin 15), passes through the DC blocking capacitor C8 (1uF), and becomes the OUT signal, which is sent to the power amplifier circuit module. The OUT signal is input to the power amplifier circuit module. The OUT signal is first DC blocked by capacitor C41 (0.1uF), and then enters the INN (pin 4) of the power amplifier chip U4 through resistor R11 (30K). The INP (pin 3) of the power amplifier chip U4 is connected to AGND through capacitors C17 (0.1uF) and C16 (1uF), forming a differential input reference. The VoP (pin 8) and VoN (pin 5) outputs differential power signals to the audio output circuit module. At the same time, resistors C42 and C43 are connected in parallel to the VoP (pin 8) and VoN (pin 5) output terminals of the power amplifier chip U4, respectively. One end of resistors C42 and C43 is connected to the output terminal of the power amplifier chip U4, and the other end is grounded. This is used to filter out the high-frequency carrier noise generated by the Class D power amplifier and prevent interference with the wireless module.

[0069] In this embodiment, as Figure 10 As shown, the signal processing chip U1 processes the analog audio signal through the audio processing chip U15. The analog audio output from the signal processing chip U1 enters the audio processing chip U15 through capacitors C34 and C35. The audio processing chip U15 processes the input analog audio based on external requirements (such as amplifying the volume). After the audio processing chip U15 finishes processing the analog audio, it is input to the power amplifier circuit module.

[0070] In this embodiment, the audio output circuit module includes a headphone jack CN6 and a built-in speaker interface CN4. The headphone jack CN6 is an HXPJ-342, a 5-pin headphone jack. It integrates a mechanical switch to automatically switch between external speaker and headphone modes. In this embodiment, pin 1 of the headphone jack CN6 is connected to the output SPK+ of the power amplifier chip U4, pin 5 is connected to the output SPK- of the power amplifier chip U4, and pin 3 is connected to one end of the built-in speaker CN4. When no headphones are inserted, pins 5 and 3 are normally closed (conductive) inside the jack. When a headphone plug is inserted, the plug tip disconnects the physical connection between pins 5 and 3.

[0071] In some embodiments, such as Figure 11As shown, the control device 4 also includes a power supply circuit module for outputting a stable voltage. In this embodiment, the power supply circuit module is a DC-DC converter circuit, which converts the input voltage into a stable target voltage.

[0072] In some embodiments, such as Figure 12 As shown, the control device 4 also includes an alarm module. The alarm device 6 is connected to the power supply circuit module and is used to detect the current and voltage output by the power supply circuit module. When the current and voltage output by the power supply circuit module do not meet the preset value, an alarm is issued. In this embodiment, the alarm module includes an externally excited mode and a self-excited mode. In the externally excited mode, the logic control chip U3 outputs a stable PWM frequency. The logic control chip controls U3 to control the switching of the transistor Q8, and the alarm module outputs a stable high voltage, thereby controlling the alarm device 6 to sound the alarm. In the self-excited mode, the output terminal of the logic control chip U3 is floating. The circuit generates high-frequency oscillation by itself through the positive feedback loop formed by resistors R9, R10, R14 and inductor L2, and outputs a high voltage. The self-excited mode is mainly used for fault protection or pure hardware alarm, which does not require MCU control and can sound as soon as it is powered on.

[0073] Specifically, in this embodiment, a sampling circuit is also included. The logic control chip collects the power supply voltage signal through the sampling circuit and transmits the power supply voltage signal to the logic control chip. When the logic control chip detects that the power supply voltage is lower than the preset value, it controls the alarm device 6 to issue a low voltage alarm through the alarm module.

[0074] In this embodiment, the sampling circuit is a voltage divider sampling circuit, including resistors R22 and R25 and capacitor C23. Resistors R22 and R25 are connected in series, the end of resistor R22 is connected to the power output terminal, the end of resistor R25 is grounded, capacitor C23 is connected in parallel with resistor R25, and the middle tap of resistors R22 and R25 generates a power supply voltage signal and sends it to the logic control chip.

[0075] In some embodiments, such as Figure 6 As shown, the control module also includes a wireless radio frequency circuit module, which is electrically connected to the signal processing circuit module and is used for communication between the signal circuit module and external devices.

[0076] Specifically, in this embodiment, the wireless radio frequency circuit module includes an antenna L5, an inductor L6, an inductor L7, and an inductor L8. The inductors L6, L8, and antenna L5 are connected in series on the RF_ANT pin of the signal processing chip U1. One end of the inductor L7 is coupled to the connection part of the inductors L6 and L8, and the other end of the inductor L7 is grounded.

[0077] In this embodiment, inductors L6 and L8 are connected in series in the RF signal path. Their function is to cancel out any capacitive components that may exist at the antenna end and to help smoothly transition the chip's output impedance (usually a complex impedance) to the impedance required by the antenna. Inductor L7 is connected at one end to the node between L6 and L8, and the other end is grounded. Its main function is to introduce a parallel inductive branch, which, in conjunction with L6, L8, and parasitic parameters on the PCB, precisely adjusts the resonant point of the entire matching network, achieving perfect impedance matching.

[0078] In this embodiment, the signal processing chip U1 is also connected to a crystal oscillator Y1, which provides a precise reference clock for the system. The 24MHz crystal oscillator Y1 and the starting capacitors C9 (10pF) and C10 (10pF) are connected across the crystal oscillator pin of U1. In this embodiment, the crystal oscillator Y1 provides a precise reference frequency for the radio frequency synthesizer inside the signal processing chip U1, improving the stability and anti-interference capability of wireless communication.

[0079] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application of the technical solution and the constraints involved. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0080] When the embodiments of this application are implemented using software, they can be implemented entirely or partially in the form of a computer program product. That is, the implementation of all or part of the processes in the methods of the above embodiments can also be accomplished by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include: any entity or device capable of carrying computer program code, recording media, USB flash drives, portable hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunication signals, and software distribution media, etc. It should be noted that the content included in the computer-readable medium can be appropriately added or removed according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, the computer-readable medium does not include electrical carrier signals and telecommunication signals.

[0081] It should be noted that this application is not limited to the above-described embodiments. The above embodiments are merely examples, and any embodiments with the same structure and effect as the technical concept within the scope of this application are included in the technical scope of this application. Furthermore, various modifications that can be conceived by those skilled in the art to the embodiments, and other ways of constructing by combining some of the constituent elements of the embodiments, without departing from the spirit of this application, are also included in the scope of this application.

Claims

1. A filler, characterized in that, include: The housing is elongated and has an internal mounting cavity; A microphone, which is disposed within the mounting cavity, is used to acquire external sound; A loudspeaker is placed inside the mounting cavity and connected to the housing via a flexible connector. The loudspeaker is suspended inside the housing via the flexible connector. The control device is electrically connected to both the microphone and the speaker. The control device is used to receive external sounds acquired by the microphone and control the speaker to play them.

2. The filler according to claim 1, characterized in that, The microphone is located at the bottom of the housing, and the speaker is located at the top of the housing.

3. The filler according to claim 1, characterized in that, The flexible connector includes: The main body has an umbrella-shaped structure, including a top and an umbrella edge, and the top of the main body has an opening; A central conduit is disposed on the main body, with one end of the central conduit located at the opening and the other end of the central conduit used to connect to the speaker; A fixing buckle is provided on the umbrella edge of the main body, and the main body is connected to the shell through the fixing buckle.

4. The filler according to claim 3, characterized in that, The housing has a first through hole, and the main body extends out of the housing through the first through hole.

5. The filler according to claim 1, characterized in that, It also includes an alarm device, which is disposed in the mounting cavity and electrically connected to the control device for issuing an alarm.

6. The filler according to claim 5, characterized in that, It also includes a pull-cord alarm switch, which is mounted on the housing and electrically connected to the alarm device. The pull-cord alarm switch is used to control the alarm device to emit an alarm.

7. The complement device according to claim 1, characterized in that, The control device includes: An audio input circuit module is used to receive external sounds received by the microphone; The signal processing circuit module is used to process the signals from the audio input circuit module to obtain a processed signal; The power amplifier circuit module is used to amplify the processed signal; An audio output circuit module is used to control the speaker to play sound according to the processed signal.

8. The filler according to claim 7, characterized in that, The control device also includes a power supply circuit module for outputting stable current and voltage.

9. The filler according to claim 8, characterized in that, The control device also includes an alarm module, which is connected to the power supply circuit module and is used to detect the current and voltage output by the power supply circuit module, and to issue an alarm when the current and voltage output by the power supply circuit module do not meet the preset value.

10. The filler according to claim 7, characterized in that, The control module also includes a wireless radio frequency circuit module, which is electrically connected to the signal processing circuit module and is used for communication between the signal processing circuit module and external devices.

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