Voice definition improving method of bone conduction earphone

Abstract

The invention discloses a method for improving voice definition of a bone conduction earphone. The bone conduction earphone comprises a bone conduction transducer, a signal processing unit, a voice definition improving module and an earphone body, the signal processing unit is electrically connected with the bone conduction transducer and the voice definition improving module; the earphone body is provided with at least one bone conduction transducer; the voice definition improving module comprises at least one filter and a voice enhancing algorithm processor; the filter is used for primarily processing the signal received by the bone conduction transducer; and the speech enhancement algorithm processor is used for further processing the filtered signal so as to improve the speech definition.

Description

Technical Field

[0001] The present invention relates to the technical field of bone conduction earphones, and in particular to a method for improving speech clarity of bone conduction earphones. Background Art

[0002] With the rapid development of modern communication technology, people have increasing requirements for the quality and clarity of voice communication; especially in noisy environments, how to effectively capture and enhance voice signals has become one of the key technologies to improve user experience; traditional headphones mainly receive sound through air conduction, that is, sound waves are transmitted to the external auditory canal through air vibrations, and then cause the eardrum to vibrate, which is perceived by the auditory nerve; however, this method is easily interfered by external noise in noisy environments, resulting in reduced voice clarity.

[0003] In order to solve the above problems, bone conduction technology came into being; bone conduction headphones convert sound signals into mechanical vibrations through bone conduction transducers, directly acting on the skull, and then transmitted to the inner ear, bypassing the external auditory canal and eardrum to achieve sound reception. This method not only avoids interference from external noise, but also provides users with a more comfortable and hygienic wearing experience; however, bone conduction headphones still have problems with speech clarity, especially at low volume or in complex noise backgrounds, speech signals are often difficult to accurately capture and enhance. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, one object of the present invention is to provide a method for improving speech clarity of a bone conduction headset, comprising:

[0005] Bone conduction transducer, signal processing unit, speech clarity enhancement module and earphone body;

[0006] The signal processing unit is electrically connected to the bone conduction transducer and the speech clarity enhancement module;

[0007] The earphone body is provided with at least one bone conduction transducer;

[0008] The speech clarity enhancement module includes at least one filter and a speech enhancement algorithm processor;

[0009] The filter is used to perform preliminary processing on the signal received by the bone conduction transducer;

[0010] The speech enhancement algorithm processor is used to further process the filtered signal to improve speech clarity;

[0011] The specific formula is as follows:

[0012] Define the component:

[0013] B: bone conduction transducer; S: signal processing unit; V: voice clarity enhancement module; H: earphone body;

[0014] Component internal elements:

[0015] V f : Filter; V α : Speech enhancement algorithm processor;

[0016] Original signal stream: Number: x ( t ) ;

[0017] Signal received by bone conduction transducer: x B (t) = B(x(t));

[0018] Signal processed by the signal processing unit: x S (t) = S(x B (t));

[0019] Signal after preliminary processing by the filter: x vf (t) = V f (x s (t));

[0020] Signal processed by the speech enhancement algorithm processor: x Vα (t) = V α (x Vf (t));

[0021] Final output signal: y(t) = x Vα (t);

[0022] Formula: y(t)=V α (Vf(S(B(x(t))))).

[0023] Preferably, the earphone body comprises a head-mounted frame and at least two bone conduction transducers, and the at least two bone conduction transducers are respectively arranged on both sides of the head-mounted frame.

[0024] Preferably, the speech clarity improvement module also includes a noise suppressor to reduce the impact of environmental noise on the signal received by the bone conduction transducer.

[0025] Preferably, the speech enhancement algorithm processor adopts at least one speech enhancement algorithm based on deep learning to achieve intelligent processing of speech signals and improve clarity.

[0026] Preferably, the filter includes at least one bandpass filter and one lowpass filter, the bandpass filter is used to filter out high-frequency noise in the signal, and the lowpass filter is used to filter out low-frequency interference in the signal.

[0027] Preferably, the earphone body further comprises at least one ambient sound collector for collecting ambient sound and transmitting it to the signal processing unit, so as to realize real-time monitoring and processing of the ambient sound.

[0028] Preferably, the earphone body also includes a wearable sensor for detecting physiological signals of the user and transmitting the physiological signals to the signal processing unit so as to adjust the parameters of the speech clarity improvement algorithm according to the physiological state of the user.

[0029] Preferably, the earphone body also includes a wireless communication module for wirelessly communicating with an external device to receive and process voice signals transmitted by the external device.

[0030] Preferably, the earphone body also includes a rechargeable battery for providing power to the earphone, and the rechargeable battery is electrically connected to the signal processing unit and is charged by wireless charging or wired charging.

[0031] Preferably, the earphone body further includes a user interaction interface for receiving operation instructions from the user and transmitting the operation instructions to the signal processing unit to realize control of the earphone functions.

[0032] The above solution of the present invention includes at least the following beneficial effects:

[0033] By setting a voice clarity improvement module, including a filter and a voice enhancement algorithm processor, the present invention can perform dual processing on the voice signal received by the bone conduction transducer; the filter first performs preliminary processing on the signal to remove noise and interference, and the voice enhancement algorithm processor further optimizes the filtered signal, thereby significantly improving the clarity of the voice; this allows the user to clearly hear the voice content even in a noisy environment, thereby improving the communication quality;

[0034] With significantly improved voice clarity, users can enjoy clearer, more natural sound when talking on the phone or listening to music, thus enhancing the user experience;

[0035] And because bone conduction headphones do not block the ear canal, users can still perceive external environmental sounds, such as traffic sounds, warning sounds, etc. when using them; this improves the safety of users in scenarios such as outdoor sports or driving;

[0036] The present invention is not only applicable to call scenarios, but can also be widely used in the fields of music playback, voice recognition, hearing aids, etc.

[0037] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0039] Figure 1 It is a flow chart of a method for improving speech clarity of a bone conduction headset provided in an embodiment of the present invention.

[0040] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0041] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but are not to be construed as limiting the present invention. All other embodiments obtained by ordinary technicians in the field without creative work based on the embodiments of the present invention are within the scope of protection of the present invention.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "circumferential", "radial" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0044] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0046] The following describes in detail a method for improving speech clarity of a bone conduction headset according to an embodiment of the present invention with reference to the accompanying drawings.

[0047] See also Figure 1 In this embodiment, it includes: a bone conduction transducer, a signal processing unit, a speech clarity improvement module and an earphone body; the signal processing unit is electrically connected to the bone conduction transducer and the speech clarity improvement module; the earphone body is provided with at least one bone conduction transducer; the speech clarity improvement module includes at least one filter and a speech enhancement algorithm processor; the filter is used to perform preliminary processing on the signal received by the bone conduction transducer; the speech enhancement algorithm processor is used to further process the filtered signal to improve the speech clarity; by setting the speech clarity improvement module, including the filter and the speech enhancement algorithm processor, the present invention can perform dual processing on the speech signal received by the bone conduction transducer; the filter first performs preliminary processing on the signal to remove noise and interference, and the speech enhancement algorithm processor further optimizes the filtered signal, thereby significantly improving the speech clarity. This allows users to clearly hear voice content even in a noisy environment, improving the quality of communication; since the voice clarity has been significantly improved, users can enjoy clearer and more natural sound effects when talking or listening to music, thereby enhancing the user experience; and since the bone conduction earphones do not block the ear canal, users can still perceive external environmental sounds, such as traffic sounds, warning sounds, etc. when using them; this improves the safety of users in outdoor sports or driving scenarios; the present invention is not only suitable for call scenarios, but can also be widely used in music playback, voice recognition, hearing aids and other fields;

[0048] The specific formula is as follows:

[0049] Define the component:

[0050] B: bone conduction transducer; S: signal processing unit; V: voice clarity enhancement module; H: earphone body;

[0051] Component internal elements:

[0052] V f : Filter; V α : Speech enhancement algorithm processor;

[0053] Original signal number: Number: x ( t ) ;

[0054] Signal received by bone conduction transducer: x B (t) = B(x(t));

[0055] Signal processed by the signal processing unit: x S (t) = S(x B (t));

[0056] Signal after preliminary processing by the filter: x vf (t) = V f (x s (t));

[0057] Signal processed by the speech enhancement algorithm processor: x Vα (t) = V α (x Vf (t));

[0058] Final output signal: y(t) = x Vα (t);

[0059] Formula: y(t)=V α (Vf(S(B(x(t))))).

[0060] In this embodiment, the earphone body includes a head-mounted frame and at least two bone conduction transducers, and the at least two bone conduction transducers are respectively arranged on both sides of the head-mounted frame; the head-mounted frame is made of lightweight and durable materials, ensuring comfort and stability for long-term wearing, and maintaining a good fit even during strenuous exercise, reducing interference with user activities; the curvature and shape of the frame closely fit the user's head contour, effectively dispersing the pressure when wearing, and improving the overall wearing experience; the two bone conduction transducers are respectively arranged on both sides of the head-mounted frame, namely the corresponding positions of the user's left ear and right ear; the bone conduction transducer directly contacts the user's temporal bone (i.e. the part of the skull near the temple) to transmit sound vibrations directly to the auditory nerve of the inner ear, thereby bypassing the outer ear and middle ear, and achieving the effect of clear hearing without blocking the ear canal; this design not only ensures that the user can remain alert to the surrounding environment while enjoying music or calls, but is very suitable for use in various scenarios such as outdoor sports and driving.

[0061] In this embodiment, the voice clarity enhancement module also includes a noise suppressor to reduce the impact of environmental noise on the bone conduction transducer receiving signal; the noise suppressor is to significantly reduce and eliminate various types of noise interference in the surrounding environment, so as to ensure that the bone conduction transducer can accurately receive and convert the user's voice signal; the noise suppressor adopts advanced signal processing technology, including but not limited to adaptive filtering, spectrum subtraction, and noise recognition and separation algorithms based on machine learning; these technologies can analyze the noise characteristics in the environment in real time, and accurately distinguish useful voice information from background noise from the original signal captured by the bone conduction transducer, effectively suppress the latter, and thus improve the clarity and recognition of the overall voice signal; the noise suppressor also has an intelligent adjustment function, which can automatically adjust its noise reduction intensity according to the change of the environmental noise level, which not only ensures that the voice will not be distorted due to excessive processing in a quiet environment, but also provides strong noise shielding in a noisy environment, ensuring that the bone conduction device can provide a clear and smooth voice communication experience in various complex scenarios. This design not only optimizes the user's auditory experience, but also further enhances the application potential of bone conduction technology in audio devices such as hearing aids and headphones, bringing users a more natural and high-quality voice communication environment.

[0062] In this embodiment, the speech enhancement algorithm processor uses at least one speech enhancement algorithm based on deep learning to achieve intelligent processing and clarity improvement of speech signals; the deep learning speech enhancement algorithm aims to significantly improve the clarity and intelligibility of speech signals through intelligent processing. These deep learning algorithms, such as variants of long short-term memory networks (LSTM), convolutional neural networks (CNN) or recurrent neural networks (RNN), can learn and extract complex speech features from a large amount of speech data, thereby achieving high-precision analysis and optimization of speech signals;

[0063] During the processing, the speech enhancement algorithm processor first receives the original speech signal from the microphone or other sound collection device; then, it uses the deep learning model to perform multi-level and multi-dimensional analysis on these signals to identify and distinguish speech content from non-speech components such as environmental noise, echo, and reverberation. Through precise distinction, the algorithm can intelligently suppress or eliminate these interfering factors while retaining and enhancing the key features of the speech signal, such as pitch, sound intensity, speech speed, etc., thereby significantly improving the clarity and recognition of the speech;

[0064] In addition, the deep learning-based speech enhancement algorithm also has strong adaptive capabilities and can dynamically adjust the processing strategy according to different speech scenarios and user needs. For example, in noisy public places, the algorithm will strengthen the functions of noise suppression and echo cancellation; while in a quiet indoor environment, it will focus more on preserving the naturalness and details of the speech. This flexibility and adaptability enables the speech enhancement algorithm processor to perform well in a wide range of voice communication and audio processing applications, bringing users a clearer, smoother and more natural voice communication experience.

[0065] In this embodiment, the filter includes at least one bandpass filter and one low-pass filter. The bandpass filter is used to filter out high-frequency noise in the signal, and the low-pass filter is used to filter out low-frequency interference in the signal. A bandpass filter is a filter that allows signals within a specific frequency range to pass through while attenuating or blocking other frequency components. In the signal processing process, bandpass filters are widely used to filter out high-frequency noise in signals. These high-frequency noises often come from the working interference of various electronic devices, electromagnetic wave radiation, etc., which will interfere with the integrity of the signal and affect the accurate transmission of information. By accurately setting the passband range of the bandpass filter, these high-frequency noises can be effectively isolated and removed to ensure that the effective information in the signal is retained and transmitted.

[0066] The low-pass filter is mainly responsible for filtering out low-frequency interference in the signal. Low-frequency interference may include low-frequency noise generated by power supply fluctuations, mechanical vibrations, etc., which can also have an adverse effect on signal quality, causing signal distortion or loss. The low-pass filter allows low-frequency components (usually the main components of the signal) to pass through while attenuating or blocking high-frequency components above the cutoff frequency, thereby purifying the signal. This filtering mechanism is crucial to maintaining signal stability and reliability, especially in application scenarios with high signal accuracy requirements;

[0067] In practical applications, the combination of bandpass filters and low-pass filters can form a complementary filtering effect and fully optimize signal quality. By fine-tuning the parameters of each filter, such as the passband frequency range, cutoff frequency, roll-off rate, etc., it is possible to accurately control the different frequency components in the signal to meet the signal processing requirements in different application scenarios. This flexible filtering configuration makes the filter an indispensable tool for improving signal clarity, reducing noise interference, and optimizing communication quality.

[0068] In this embodiment, the headset body also includes at least one ambient sound collector, which is used to collect ambient sound and transmit it to the signal processing unit to achieve real-time monitoring and processing of ambient sound; the ambient sound collector is embedded in the housing or earmuff of the headset, and its function is to capture and collect sound information of the user's surrounding environment in real time. These sound information may include conversation sounds, traffic noise, natural environmental sounds, etc., which are accurately captured by highly sensitive microphone sensors and converted into electrical signals. Subsequently, these electrical signals are quickly transmitted to the signal processing unit inside the headset, providing the original data basis for subsequent real-time monitoring and processing;

[0069] After the signal processing unit receives the sound signal transmitted by the ambient sound collector, it will immediately start the preset algorithms and processes. These algorithms are designed to analyze the frequency, intensity, direction and other characteristics of the sound signal to accurately identify and classify the ambient sound. On this basis, the signal processing unit can perform a variety of operations, such as enhancing or weakening the sound of a specific frequency, identifying and filtering out unwanted noise, and even simulating different sound environments to meet the different needs of users for ambient sound;

[0070] For example, in noisy public places, users can use the ambient sound collector and signal processing unit on the headset to intelligently reduce the interference of surrounding noise and maintain the clarity of calls or music. When exploring or exercising outdoors, users can use this function to enhance the perception of natural sounds, such as birdsong and flowing water, making the experience more immersive and real;

[0071] In addition, the combination of the ambient sound collector and the signal processing unit also provides the possibility for the safety design of the headset. For example, in certain emergency situations, such as approaching vehicles or pedestrians calling, the headset can automatically adjust the volume or play warning sounds to ensure that users can detect changes in the external environment in time and ensure personal safety.

[0072] In this embodiment, the earphone body also includes a wearable sensor for detecting the user's physiological signals and transmitting the physiological signals to the signal processing unit to adjust the parameters of the speech clarity improvement algorithm according to the user's physiological state.

[0073] In this embodiment, the headset body also includes a wireless communication module for wirelessly communicating with an external device to receive and process voice signals transmitted by the external device; the wireless communication module is responsible for data transmission between the headset and an external device (such as a smartphone, tablet computer, laptop computer, etc.). The working principle of this module is to receive the wireless signal sent by the external device, decode the voice signal (or other audio data) therein and pass it to the audio processing unit inside the headset. In this process, the wireless communication module needs to ensure the stability, security and low latency of data transmission to ensure that users can enjoy a smooth and clear voice call or music playback experience;

[0074] The wireless communication module uses a variety of technical means; for example, it supports multiple Bluetooth protocol versions to ensure compatibility with external devices of different models and brands; at the same time, it also uses advanced audio codec technologies such as AAC, aptX, etc. to compress audio data while retaining the sound quality and details of the original audio to the maximum extent. In addition, the wireless communication module also has an intelligent connection management function that can automatically detect and connect to the most recently used or prioritized external device, further simplifying the user's operation process;

[0075] In actual applications, the role of the wireless communication module is not limited to receiving and processing voice signals transmitted by external devices. It can also serve as an interactive bridge between the headset and external devices to achieve more diversified functions; for example, users can wirelessly control music playback, phone call answering, text message reading, etc. of external devices through the control buttons or voice assistant function on the headset; at the same time, the headset can also wirelessly transmit the user's voice commands to external devices to achieve functions such as voice control or voice search.

[0076] In this embodiment, the earphone body also includes a rechargeable battery for providing power to the earphone. The rechargeable battery is electrically connected to the signal processing unit and is charged by wireless charging or wired charging. As the core of the earphone's energy supply, the performance of the rechargeable battery directly affects the earphone's usage time and portability. To ensure that the earphone can continue to provide a high-quality audio experience, the rechargeable battery uses advanced battery cell technology and an intelligent power management system. The battery cell technology ensures the high energy density and long cycle life of the battery, so that the earphone can support long-term use after a single charge, reducing the trouble of frequent charging. The intelligent power management system can monitor the battery's power status in real time, and further extend the earphone's standby time and usage time by optimizing power distribution and reducing unnecessary power consumption.

[0077] In terms of charging methods, this headset provides two flexible options: wireless charging and wired charging. The wireless charging method uses the principle of electromagnetic induction. Users only need to place the headset on a compatible wireless charging pad to automatically replenish the power. This method does not require plugging and unplugging the charging cable, reduces physical wear and tear and the tedious plug-in and unplug operations, and brings users a more convenient and elegant charging experience. The wired charging method connects the headset to the power adapter through a dedicated charging cable to achieve fast and stable charging. This method can quickly recharge the headset in an emergency, ensuring that users can enjoy high-quality audio services at any time;

[0078] During the charging process, the rechargeable battery and the signal processing unit remain electrically connected, ensuring that the headset can perform necessary signal processing and standby preparation while charging. This means that even when the headset is charging, the user can still receive and process signals from external devices through the headset, such as answering calls, playing music, etc. This design not only improves the efficiency of headset use, but also further enhances user convenience and satisfaction.

[0079] In this embodiment, the headset body further includes a user interaction interface for receiving operation instructions from the user and transmitting the operation instructions to the signal processing unit to control the functions of the headset; the user interaction interface may be provided on the housing, earmuff or wire control part of the headset, and is designed to allow the user to easily and intuitively operate the headset to control various functions of the headset; this interface may include a variety of operation modes such as physical buttons, touch panels, voice assistants, etc. to meet the operation habits and preferences of different users;

[0080] Physical buttons are a common user interaction method. They are usually designed in shapes and sizes that are easy to identify and operate. Users can send operation instructions by pressing or long pressing different buttons. For example, users can press the play / pause button to control the playback status of music, or adjust the volume of music by adjusting the volume button. The design of these buttons is not only intuitive and easy to use, but also can realize quick control of headphone functions without using external devices.

[0081] The touch panel provides more flexible and diverse operation methods. Users can send operation instructions by tapping, sliding or long pressing different areas on the touch panel; for example, users can slide their fingers on the touch panel to switch songs, or answer or hang up a call by tapping a specific area. The design of the touch panel not only improves the convenience of user operation;

[0082] Voice assistant is a more intelligent user interaction method. Users can control various functions of the headset through voice commands, such as playing music, answering calls, checking the weather, etc. This operation method not only eliminates the tedious manual operation of users, but also improves the accuracy and efficiency of operations. At the same time, voice assistant also supports natural language processing function, which can understand and respond to users' complex commands, bringing users a more intelligent and humanized user experience.

[0083] The user interface will pass the received operation instructions to the signal processing unit in real time. As the core component of the headset, the signal processing unit is responsible for parsing and processing these instructions, and adjusting and controlling the functions of the headset accordingly according to the content of the instructions; for example, when the user sends a command to play music through the user interface, the signal processing unit will immediately start the music playback function and adjust the audio output parameters to provide the best sound quality effect.

[0084] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0085] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A method for improving speech clarity of a bone conduction headset, characterized in that: include: Bone conduction transducer, signal processing unit, speech clarity enhancement module and earphone body; The signal processing unit is electrically connected to the bone conduction transducer and the speech clarity enhancement module; The earphone body is provided with at least one bone conduction transducer; The speech clarity enhancement module includes at least one filter and a speech enhancement algorithm processor; The filter is used to perform preliminary processing on the signal received by the bone conduction transducer; The speech enhancement algorithm processor is used to further process the filtered signal to improve speech clarity; The specific formula is as follows: Define the component: B: bone conduction transducer; S: signal processing unit; V: voice clarity enhancement module; H: earphone body; Component internal elements: V f : Filter; V α : Speech enhancement algorithm processor; Signal flow: Original signal: x(t); Signal received by bone conduction transducer: x B (t) = B(x(t)); Signal processed by the signal processing unit: x S (t) = S(x B (t)); Signal after preliminary processing by the filter: x vf (t) = V f (x s (t)); Signal processed by the speech enhancement algorithm processor: x Vα (t) = V α (x Vf (t)); Final output signal: y(t) = x Vα (t); Formula: y(t)=V α (Vf(S(B(x(t))))).

2. The method for improving speech clarity of a bone conduction headset according to claim 1, characterized in that: The earphone body comprises a head-mounted frame and at least two bone conduction transducers, and the at least two bone conduction transducers are respectively arranged on both sides of the head-mounted frame.

3. The method for improving speech clarity of a bone conduction headset according to claim 1, characterized in that: The speech clarity improvement module also includes a noise suppressor to reduce the impact of environmental noise on the signal received by the bone conduction transducer.

4. The method for improving speech clarity of a bone conduction headset according to claim 1, characterized in that: The speech enhancement algorithm processor adopts at least one speech enhancement algorithm based on deep learning to achieve intelligent processing of speech signals and improve clarity.

5. The method for improving speech clarity of a bone conduction headset according to claim 1, characterized in that: The filter includes at least one bandpass filter and a lowpass filter. The bandpass filter is used to filter out high-frequency noise in the signal, and the lowpass filter is used to filter out low-frequency interference in the signal.

6. The method for improving speech clarity of a bone conduction headset according to claim 1, characterized in that: The earphone body also includes at least one ambient sound collector, which is used to collect ambient sound and transmit it to the signal processing unit to achieve real-time monitoring and processing of the ambient sound.

7. The method for improving speech clarity of a bone conduction headset according to claim 1, characterized in that: The earphone body also includes a wearable sensor for detecting the user's physiological signals and transmitting the physiological signals to the signal processing unit to adjust the parameters of the speech clarity improvement algorithm according to the user's physiological state.

8. The method for improving speech clarity of a bone conduction headset according to claim 1, characterized in that: The earphone body also includes a wireless communication module for wirelessly communicating with an external device to receive and process a voice signal transmitted by the external device.

9. The method for improving speech clarity of a bone conduction headset according to claim 1, characterized in that: The earphone body also includes a rechargeable battery for providing power to the earphone. The rechargeable battery is electrically connected to the signal processing unit and is charged by wireless charging or wired charging.

10. The method for improving speech clarity of a bone conduction headset according to claim 1, characterized in that: The earphone body also includes a user interaction interface for receiving user operation instructions and transmitting the operation instructions to the signal processing unit to realize control of the earphone function.

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