A method and device for actively improving the sound quality of bone conduction speakers

Abstract

The present invention provides a method and device for actively improving the sound quality of a bone conduction speaker, which relates to the technical field of bone conduction speakers and is used for a bone conduction speaker. The bone conduction speaker is connected to a vibration generating device, and the bone conduction speaker and the vibration generating device are located on the vibration reduction unit of the same hearing aid. The method and device include: receiving an external sound signal and converting the sound signal into a first electrical signal; amplifying the first electrical signal into a second electrical signal according to a first ratio, and then outputting the second electrical signal as a first vibration signal, wherein the magnitude of the first ratio is proportional to the hearing loss of the user of the bone conduction speaker; obtaining the vibration signal generated by the bone conduction speaker during operation through a simulation experiment as the basis for vibration reduction, and precalculating the specific intensity value of the second vibration signal required when the bone conduction speaker outputs different first vibration signals. By amplifying and reducing the electrical signal, the required second vibration signal can be generated.

Description

Technical Field

[0001] This invention relates to the technical field of bone conduction speakers, and specifically to a method and device for actively improving the sound quality of bone conduction speakers. Background Art

[0002] Bone conduction is a sound transmission method that converts sound into mechanical vibrations of different frequencies and transmits sound waves through the human skull, bony labyrinth, inner ear lymph, spiral organ, and auditory center. Compared with the classic sound transmission method that generates sound waves through the diaphragm, bone conduction eliminates many steps in the sound wave transmission and can achieve clear sound restoration in noisy environments. Moreover, the sound waves will not affect others due to diffusion in the air. Headphones made with bone conduction speaker technology and bone conduction microphone technology are called bone conduction headphones, also known as bone-feeling headphones.

[0003] Chinese patent publication number CN105101020B provides a method for actively improving the sound quality of a bone conduction speaker and a bone conduction speaker capable of improving sound quality. The bone conduction speaker includes a housing, a transducer, and a first transducer; the first transducer is physically connected to the transducer; the first transducer is physically connected to the housing; the first transducer is capable of causing the speaker to produce a resonance peak; and the transducer is capable of producing at least one resonance peak. This invention improves the sound quality of the bone conduction speaker, particularly the mid-bass quality, and increases the wearing comfort of the bone conduction speaker through a specific design. However, the above technology mainly relies on passive physical connection methods for vibration reduction. When the sound is loud or the decibel difference between the front and back sounds is large, the vibration cannot be adjusted in time, which can easily cause the bone conduction speaker unit to vibrate laterally. This may cause the coil in the bone conduction speaker unit to contact the magnet or magnetic conductor, etc., causing abnormal noise and resulting in a decrease in the sound quality of the bone conduction speaker.

[0004] Invention patent content

[0005] In response to the defects in the existing technology, the patent of this invention provides a method and device for actively improving the sound quality of bone conduction speakers to improve the sound quality of bone conduction speakers.

[0006] According to a first aspect of the embodiments of the present disclosure, a preferred embodiment of the present invention provides a method for actively improving the sound quality of a bone conduction speaker, which is used for a bone conduction speaker, wherein the bone conduction speaker is connected to a vibration generating device, and the bone conduction speaker and the vibration generating device are located on the same vibration reduction unit of a hearing aid, comprising:

[0007] receiving an external acoustic signal and converting the acoustic signal into a first electrical signal;

[0008] After amplifying the first electrical signal into a second electrical signal according to a first ratio, the second electrical signal is output as a first vibration signal, wherein the magnitude of the first ratio is proportional to the hearing loss of the user of the bone conduction speaker;

[0009] generating an inverse signal of the second electrical signal as a third electrical signal, wherein the third electrical signal has the same amplitude and an opposite phase as the second electrical signal;

[0010] After the third electrical signal is reduced in size according to a second ratio to be converted into a fourth electrical signal, the fourth electrical signal is output as a second vibration signal, where the intensity of the second vibration signal is proportional to the intensity of the first vibration signal.

[0011] In one embodiment, after processing the first electrical signal into a second electrical signal according to a first ratio, outputting the second electrical signal as a first vibration signal, wherein the magnitude of the first ratio is proportional to the hearing loss of the user of the bone conduction speaker, includes:

[0012] Obtaining the hearing range of the user of the bone conduction speaker;

[0013] Calculating the median of the hearing range of the bone conduction speaker user as the effective hearing value;

[0014] The ratio between the effective hearing value and the current acoustic signal value is calculated to obtain a first ratio.

[0015] In one embodiment, after reducing the third electrical signal according to the second ratio to generate a fourth electrical signal, the fourth electrical signal is output as a second vibration signal, wherein the second vibration signal is proportional to the intensity of the first vibration signal, including:

[0016] acquiring a correspondence between different second electrical signals and vibration intensities when the second electrical signal outputs different first vibration signals;

[0017] Based on the relationship between the second electrical signal and the third electrical signal, establishing a functional relationship between the third electrical signal and the vibration intensity;

[0018] A function value between the third electrical signal and the vibration intensity when the second electrical signal is output is obtained as a second ratio.

[0019] In one embodiment, the first vibration signal and the second vibration signal are output synchronously, and have different amplitudes and opposite phases.

[0020] According to a second aspect of the disclosed embodiments, the present invention provides a device for actively improving the sound quality of a bone conduction speaker, which is used for a bone conduction speaker. The bone conduction speaker is connected to a vibration generating device, and the bone conduction speaker and the vibration generating device are located on the same vibration reduction unit of a hearing aid, comprising:

[0021] a conversion module, configured to receive an external acoustic signal and convert the acoustic signal into a first electrical signal;

[0022] a first output module, configured to amplify the first electrical signal according to a first ratio into a second electrical signal, and then output the second electrical signal as a first vibration signal, wherein the magnitude of the first ratio is proportional to the hearing loss of the user of the bone conduction speaker;

[0023] a generating module, configured to generate an inverse signal of the second electrical signal as a third electrical signal, wherein the third electrical signal has the same amplitude and an opposite phase as the second electrical signal;

[0024] The second output module is configured to reduce the third electrical signal according to a second ratio to produce a fourth electrical signal, and then output the fourth electrical signal as a second vibration signal, wherein the second vibration signal is proportional to the intensity of the first vibration signal.

[0025] In one embodiment, the first output module includes:

[0026] A first acquisition module is used to acquire the hearing range of the user of the bone conduction speaker;

[0027] An evaluation module, configured to calculate a median of the hearing range of the user of the bone conduction speaker as an effective hearing value;

[0028] The calculation module is used to calculate the ratio between the effective hearing value and the current sound signal value to obtain a first ratio.

[0029] In one embodiment, the second output module includes:

[0030] a second acquisition module, configured to acquire a correspondence between different second electrical signals and vibration intensities when the second electrical signal outputs different first vibration signals;

[0031] an association module, configured to establish a functional relationship between the third electrical signal and the vibration intensity based on the relationship between the second electrical signal and the third electrical signal;

[0032] The obtaining module is used to obtain a function value between the third electrical signal and the vibration intensity when outputting the second electrical signal as the second ratio.

[0033] In one embodiment, the first vibration signal and the second vibration signal are output synchronously, and have different amplitudes and opposite phases.

[0034] According to a third aspect of the embodiments of the present disclosure, the present invention provides a device for actively improving the sound quality of a bone conduction speaker, comprising:

[0035] processor;

[0036] a memory for storing instructions executable by the processor;

[0037] The processor is configured to execute the steps of the above method.

[0038] According to a fourth aspect of the embodiments of the present disclosure, the present invention provides a computer-readable storage medium having a computer program stored thereon, and the computer program is used by a processor to execute the steps of the above method.

[0039] It can be seen from the above technical solution that the method and device for actively improving the sound quality of a bone conduction speaker provided by the patent of the present invention may include the following beneficial effects: the present invention obtains the vibration signal generated by the bone conduction speaker during operation through simulation experiments as the basis for vibration reduction, and can pre-calculate the specific intensity value of the second vibration signal required when the bone conduction speaker outputs different first vibration signals. By amplifying and reducing the electrical signal, the required second vibration signal can be generated, and the first vibration signal and the second vibration signal are output synchronously, and the amplitudes of the two are different but the phases are opposite, which greatly improves the stability of the bone conduction speaker output and can effectively reduce the noise generated by the vibration of the bone conduction speaker.

[0040] It should be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the specific embodiments of the present invention, the following briefly introduces the drawings required for the specific embodiments or the prior art description. In all the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0042] Figure 1 A flow chart of a method for actively improving the sound quality of a bone conduction speaker provided by the present invention;

[0043] Figure 2 This is a flow chart of step S12 in a method for actively improving the sound quality of a bone conduction speaker provided by the present invention;

[0044] Figure 3 This is a flowchart of step S14 in a method for actively improving the sound quality of a bone conduction speaker provided by the present invention;

[0045] Figure 4 A block diagram of a device for actively improving the sound quality of a bone conduction speaker provided by the present invention;

[0046] Figure 5 A block diagram of another device for actively improving the sound quality of a bone conduction speaker provided in this patent. DETAILED DESCRIPTION

[0047] The following embodiments of the technical solution of the present invention will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are therefore only examples and cannot be used to limit the scope of protection of the present invention.

[0048] Figure 1 This is a flowchart of a method for actively improving the sound quality of a bone conduction speaker provided by the present invention. The method is applied to a hearing aid terminal to which the bone conduction speaker belongs. The terminal can display pictures, videos, text messages, WeChat and other information. The terminal can be equipped with any terminal device with a display screen, such as a mobile phone, computer, digital broadcast terminal, messaging device, game console, tablet device, medical device, fitness equipment, personal digital assistant, etc. This embodiment provides a method for actively improving the sound quality of a bone conduction speaker, such as Figure 1 As shown, the method is used for a bone conduction speaker, wherein the bone conduction speaker is connected to a vibration generating device, and the bone conduction speaker and the vibration generating device are located on the same vibration reduction unit of a hearing aid, comprising the following steps S11-S14:

[0049] In step S11, an external acoustic signal is received and converted into a first electrical signal;

[0050] In step S12, after amplifying the first electrical signal into a second electrical signal according to a first ratio, the second electrical signal is output as a first vibration signal, wherein the magnitude of the first ratio is proportional to the hearing loss of the user of the bone conduction speaker;

[0051] In this implementation, the microphone converts the external sound signal into a first electrical signal, and the bone conduction speaker outputs the second electrical signal as a first vibration signal. The greater the hearing loss of the user of the bone conduction speaker, the greater the amplification factor of the bone conduction speaker, so that the user of the bone conduction speaker can restore normal hearing ability.

[0052] In step S13, an inverse signal of the second electrical signal is generated as a third electrical signal, wherein the third electrical signal has the same amplitude and an opposite phase as the second electrical signal;

[0053] In step S14, the third electrical signal is scaled down according to a second ratio to form a fourth electrical signal, and the fourth electrical signal is output as a second vibration signal, wherein the intensity of the second vibration signal is proportional to the intensity of the first vibration signal;

[0054] In this implementation, the signal generator sends out a third electrical signal, and the vibration generating device outputs a fourth electrical signal. It is worth noting that different vibration generating devices generate different vibration intensities for the same current. Specifically, the current should be input according to the vibration characteristics of the vibration generating device to generate the required second vibration signal.

[0055] Among them, such as Figure 2 As shown, in step S12, after the first electrical signal is processed into a second electrical signal according to a first ratio, the second electrical signal is output as a first vibration signal, wherein the magnitude of the first ratio is proportional to the hearing loss of the user of the bone conduction speaker, including the following steps S21-S23:

[0056] In step S21, the hearing range of the user of the bone conduction speaker is obtained;

[0057] In this implementation, different decibel sounds are used to stimulate the bone conduction speaker user, and the user's sensitivity to different sounds is determined based on their response. Through repeated simulation experiments, the user's most comfortable hearing range can be determined.

[0058] In step S22, the median of the hearing range of the bone conduction speaker user is calculated as the effective hearing value;

[0059] In this embodiment, within the hearing range that is more comfortable for the bone conduction speaker user, a value above the lowest hearing value is selected as the effective hearing value, which can ensure that the bone conduction speaker user can hear clearly;

[0060] In step S23, a ratio between the effective hearing value and the current acoustic signal value is calculated to obtain a first ratio;

[0061] In this implementation, the ratio between the effective hearing value and the current sound signal value is the amplification factor required for the current sound signal value.

[0062] In one embodiment, if Figure 3 As shown, in step S14, after the third electrical signal is reduced according to the second ratio to be processed into a fourth electrical signal, the fourth electrical signal is output as a second vibration signal, and the intensity of the second vibration signal is proportional to the intensity of the first vibration signal, including the following steps S31-S32:

[0063] In step S41, when the second electrical signal outputs different first vibration signals, a corresponding relationship between different second electrical signals and vibration intensities is obtained;

[0064] In step S42, based on the relationship between the second electrical signal and the third electrical signal, a functional relationship between the third electrical signal and the vibration intensity is established;

[0065] In step S43, a function value between the third electrical signal and the vibration intensity when the second electrical signal is output is obtained as a second ratio;

[0066] In this implementation, within the range of low vibration, the larger the second electrical signal, the greater the vibration intensity, and the greater the signal intensity required to suppress the vibration. The two are in a directly proportional linear relationship. However, as the second electrical signal increases, the increase in vibration intensity is affected by resonance and increasingly does not follow the directly proportional linear relationship. The required signal intensity to suppress the vibration also increases, and the functional relationship between the two will also change accordingly.

[0067] In one embodiment, the first vibration signal and the second vibration signal are output synchronously, and have different amplitudes and opposite phases;

[0068] In this implementation, when the first vibration signal is emitted, the vibration reduction unit plays a buffering and vibration reduction role, and the second vibration signal plays a role in suppressing excessive vibration of the vibration reduction unit and the bone conduction speaker. The value of the first vibration signal is much greater than the value of the second vibration signal, so that the user of the bone conduction speaker can hear the sound normally and the generation of noise is reduced.

[0069] The following are embodiments of the apparatus disclosed herein, which can be used to execute embodiments of the method disclosed herein.

[0070] Figure 4 This is a block diagram of a device for actively improving the sound quality of a bone conduction speaker provided by the present invention. The device can be implemented as part or all of an electronic device through software, hardware, or a combination of both. Figure 4 As shown, the device is used for a bone conduction speaker, the bone conduction speaker is connected to a vibration generating device, and the bone conduction speaker and the vibration generating device are located on the same vibration reduction unit of a hearing aid, comprising:

[0071] The conversion module 10 is configured to receive an external acoustic signal and convert the acoustic signal into a first electrical signal;

[0072] a first output module 20 for amplifying the first electrical signal into a second electrical signal according to a first ratio, and outputting the second electrical signal as a first vibration signal, wherein the magnitude of the first ratio is proportional to the hearing loss of the user of the bone conduction speaker;

[0073] a generating module 30, configured to generate an inverse signal of the second electrical signal as a third electrical signal, wherein the third electrical signal has the same amplitude and an opposite phase as the second electrical signal;

[0074] The second output module 40 is configured to reduce the third electrical signal according to a second ratio to produce a fourth electrical signal, and then output the fourth electrical signal as a second vibration signal, wherein the second vibration signal is proportional to the intensity of the first vibration signal.

[0075] The present disclosure obtains the vibration signal generated by the operation of the bone conduction speaker through simulation experiments as the basis for vibration reduction. The specific intensity value of the second vibration signal required when the bone conduction speaker outputs different first vibration signals can be calculated in advance. By amplifying and reducing the electrical signal, the required second vibration signal can be generated. The first vibration signal and the second vibration signal are output synchronously, and the amplitudes of the two are different but the phases are opposite. This greatly improves the stability of the output of the bone conduction speaker and can effectively reduce the noise generated by the vibration of the bone conduction speaker.

[0076] In one embodiment, if Figure 4 As shown, the first output module 20 includes:

[0077] A first acquisition module 21 is used to obtain the hearing range of the user of the bone conduction speaker;

[0078] An evaluation module 22 is configured to calculate a median of the hearing range of the user of the bone conduction speaker as an effective hearing value;

[0079] The calculation module 23 is configured to calculate a ratio between the effective hearing value and the current sound signal value to obtain a first ratio.

[0080] In one embodiment, if Figure 4 As shown, the second output module 40 includes:

[0081] A second acquisition module 41 is configured to acquire a correspondence between different second electrical signals and vibration intensities when the second electrical signal outputs different first vibration signals;

[0082] an association module 42, configured to establish a functional relationship between the third electrical signal and the vibration intensity based on the relationship between the second electrical signal and the third electrical signal;

[0083] The obtaining module 43 is configured to obtain, as a second ratio, a function value between the third electrical signal and the vibration intensity when outputting the second electrical signal.

[0084] In one embodiment, the first vibration signal and the second vibration signal are output synchronously, and have different amplitudes and opposite phases.

[0085] Regarding the apparatus in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0086] The present disclosure also provides another device for actively improving the sound quality of a bone conduction speaker:

[0087] Figure 5 FIG8 is a block diagram illustrating an apparatus 800 for actively improving the sound quality of a bone conduction speaker, according to an exemplary embodiment. For example, apparatus 800 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, or the like.

[0088] Reference Figure 5 , the device 800 may include one or more of the following components: a processing component 802 , a memory 804 , a power component 806 , a multimedia component 808 , an audio component 810 , an input / output (I / O) interface 812 , a sensor component 814 , and a communication component 816 .

[0089] The processing component 802 generally controls the overall operation of the device 800, such as operations associated with display, phone calls, data communications, camera operation, and recording operations. The processing component 802 may include one or more processors 820 to execute instructions to perform all or part of the steps of the above-described method. In addition, the processing component 802 may include one or more modules to facilitate interaction between the processing component 802 and other components. For example, the processing component 802 may include a multimedia module to facilitate interaction between the multimedia component 808 and the processing component 802.

[0090] The memory 804 is configured to store various types of data to support the operations of the device 800. Examples of such data include instructions for any application or method operating on the device 800, contact data, phone book data, messages, pictures, videos, etc. The memory 804 can be implemented by any type of volatile or non-volatile storage device, or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk, or optical disk.

[0091] The power supply component 806 provides power to the various components of the device 800. The power supply component 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the device 800.

[0092] The multimedia component 808 includes a screen that provides an output interface between the device 800 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen can be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, slides, and gestures on the touch panel. The touch sensor can not only sense the boundaries of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front camera and / or a rear camera. When the device 800 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have focal length and optical zoom capabilities.

[0093] The audio component 810 is configured to output and / or input audio signals. For example, the audio component 810 includes a microphone (MIC), which is configured to receive external audio signals when the device 800 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal can be further stored in the memory 804 or transmitted via the communication component 816. In some embodiments, the audio component 810 also includes a speaker for outputting audio signals.

[0094] I / O interface 812 provides an interface between processing component 802 and peripheral interface modules, such as a keyboard, click wheel, buttons, etc. These buttons may include but are not limited to: a home button, volume buttons, a start button, and a lock button.

[0095] The sensor assembly 814 includes one or more sensors for providing various aspects of the status assessment of the device 800. For example, the sensor assembly 814 can detect the open / closed state of the device 800, the relative positioning of components, such as the display and keypad of the device 800. The sensor assembly 814 can also detect changes in the position of the device 800 or a component of the device 800, the presence or absence of user contact with the device 800, the orientation or acceleration / deceleration of the device 800, and temperature changes of the device 800. The sensor assembly 814 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 814 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 may also include an accelerometer, a gyroscope, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0096] The communication component 816 is configured to facilitate wired or wireless communication between the apparatus 800 and other devices. The apparatus 800 can access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof.

[0097] In an exemplary embodiment, the communication component 816 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 816 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0098] In an exemplary embodiment, the apparatus 800 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the above-described method.

[0099] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 804 including instructions, and the instructions can be executed by the processor 820 of the apparatus 800 to perform the above method. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0100] Other embodiments of the present disclosure will readily occur to those skilled in the art after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the following claims.

[0101] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A method for actively improving the sound quality of a bone conduction speaker, wherein the bone conduction speaker is connected to a vibration generating device, and the bone conduction speaker and the vibration generating device are located on the same vibration reduction unit of a hearing aid, characterized in that: include: receiving an external acoustic signal and converting the acoustic signal into a first electrical signal; After amplifying the first electrical signal into a second electrical signal according to a first ratio, the second electrical signal is output as a first vibration signal, wherein the magnitude of the first ratio is proportional to the hearing loss of the user of the bone conduction speaker; generating an inverse signal of the second electrical signal as a third electrical signal, wherein the third electrical signal has the same amplitude and an opposite phase as the second electrical signal; After reducing the third electrical signal according to a second ratio to generate a fourth electrical signal, the fourth electrical signal is output as a second vibration signal, wherein the second vibration signal is proportional to the intensity of the first vibration signal; The method further comprises: reducing the third electrical signal to a fourth electrical signal according to a second ratio, outputting the fourth electrical signal as a second vibration signal, wherein the second vibration signal is proportional to the intensity of the first vibration signal. acquiring a correspondence between different second electrical signals and vibration intensities when the second electrical signal outputs different first vibration signals; Based on the relationship between the second electrical signal and the third electrical signal, establishing a functional relationship between the third electrical signal and the vibration intensity; A function value between the third electrical signal and the vibration intensity when the second electrical signal is output is obtained as a second ratio.

2. The method according to claim 1, characterized in that After processing the first electrical signal into a second electrical signal according to a first ratio, outputting the second electrical signal as a first vibration signal, wherein the magnitude of the first ratio is proportional to the hearing loss of the user of the bone conduction speaker, comprises: Obtaining the hearing range of the user of the bone conduction speaker; Calculating the median of the hearing range of the bone conduction speaker user as the effective hearing value; The ratio between the effective hearing value and the current acoustic signal value is calculated to obtain a first ratio.

3. The method according to claim 1, characterized in that The first vibration signal and the second vibration signal are output synchronously, and have different amplitudes and opposite phases.

4. A device for actively improving the sound quality of a bone conduction speaker, characterized in that: A bone conduction speaker connected to a vibration generator, wherein the bone conduction speaker and the vibration generator are located on the same vibration reduction unit of a hearing aid, comprising: a conversion module, configured to receive an external acoustic signal and convert the acoustic signal into a first electrical signal; a first output module, configured to amplify the first electrical signal according to a first ratio into a second electrical signal, and then output the second electrical signal as a first vibration signal, wherein the magnitude of the first ratio is proportional to the hearing loss of the user of the bone conduction speaker; a generating module, configured to generate an inverse signal of the second electrical signal as a third electrical signal, wherein the third electrical signal has the same amplitude and an opposite phase as the second electrical signal; a second output module, configured to reduce the third electrical signal according to a second ratio to produce a fourth electrical signal, and then output the fourth electrical signal as a second vibration signal, wherein the second vibration signal is proportional to the intensity of the first vibration signal; Wherein, the second output module includes: a second acquisition module, configured to acquire a correspondence between different second electrical signals and vibration intensities when the second electrical signal outputs different first vibration signals; an association module, configured to establish a functional relationship between the third electrical signal and the vibration intensity based on the relationship between the second electrical signal and the third electrical signal; The obtaining module is configured to obtain, as a second ratio, a function value between the third electrical signal and the vibration intensity when outputting the second electrical signal.

5. The device according to claim 4, characterized in that The first output module includes: A first acquisition module is used to acquire the hearing range of the user of the bone conduction speaker; An evaluation module, configured to calculate a median of the hearing range of the user of the bone conduction speaker as an effective hearing value; The calculation module is used to calculate the ratio between the effective hearing value and the current sound signal value to obtain a first ratio.

6. The device according to claim 4, characterized in that The first vibration signal and the second vibration signal are output synchronously, and have different amplitudes and opposite phases.

7. A device for actively improving the sound quality of a bone conduction speaker, characterized in that: include: processor; a memory for storing instructions executable by the processor; The processor is configured to execute the steps of any one of the methods in claims 1 to 3.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 3 are implemented.

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