System and method for inspecting the condition of a bone conduction hearing device

Abstract

The present disclosure provides methods and systems for detecting the state of the bone conduction hearing device. The bone conduction hearing device comprises at least a microphone, a speaker, a feedback analysis unit, and a signal processing unit. The speaker generates a third sound based on a first signal, and the first signal may be generated by the signal processing unit. The microphone may receive the third sound and generate a feedback signal. The feedback analysis unit may determine a feedback path transfer function from the speaker to the microphone based on the feedback signal and the first signal, obtain at least one preset feedback path transfer function, and compare the feedback path transfer function with the at least one preset feedback path transfer function. The signal processing unit may determine the state of the bone conduction hearing device based on the comparison result.

Description

Technology Field

[0001] The present disclosure generally relates to the technical field of hearing devices, and in particular, to a system and method for detecting the condition of a bone conduction hearing device. Background Technology

[0002] Hearing devices (e.g., hearing aids) generally comprise both a microphone and a speaker. The condition of the hearing device can have a significant impact on its use. An abnormal condition of the hearing device can drastically reduce its output sensitivity or directly cause the hearing device to malfunction (e.g., the occurrence of howling). Therefore, monitoring the condition of the hearing device is of great significance in ensuring normal use of the device and reducing failures caused by abnormal hearing devices. In bone conduction hearing devices (e.g., bone conduction hearing aids), the feedback path transfer function is an important indicator reflecting the condition of the hearing device. In some situations, the real-time condition of the bone conduction hearing device can be intuitively reflected by monitoring and evaluating the feedback path transfer function of the bone conduction hearing device.

[0003] One of the embodiments of the present disclosure provides a method for detecting the state of the bone conduction hearing device, wherein the bone conduction hearing device comprises at least a microphone, a speaker, a feedback analysis unit, and a signal processing unit. The method comprises: the speaker generating a third sound based on a first signal generated by the signal processing unit; the microphone receiving the third sound and generating a feedback signal; the feedback analysis unit determining a feedback path transfer function from the speaker to the microphone based on the feedback signal and the first signal, obtaining at least one preset feedback path transfer function, and comparing the feedback path transfer function with the at least one preset feedback path transfer function; and the signal processing unit determining the state of the bone conduction hearing device based on the comparison result.

[0004] In some embodiments, the at least one preset feedback path transfer function includes a standard feedback path transfer function and an abnormal feedback path transfer function, and the abnormal feedback path transfer function includes one or more of a misfit feedback path transfer function, an abnormal structure feedback path transfer function, a foreign matter intrusion feedback path transfer function, and a foreign matter blocking feedback path transfer function. Comparing the feedback path transfer function with the at least one preset feedback path transfer function includes determining at least one preset feedback path transfer function within a preset threshold range using the feedback path transfer function; and determining the type of the feedback path transfer function based on the type of the at least one determined preset feedback path transfer function.

[0005] In some embodiments, determining the type of a feedback path transfer function based on the type of at least one determined preset feedback path transfer function comprises determining that the feedback path transfer function is a normal feedback path transfer function if the type of at least one determined preset feedback path transfer function is the standard feedback path transfer function; or determining that the feedback path transfer function is an abnormal feedback path transfer function if the type of at least one determined preset feedback path transfer function is the abnormal feedback path transfer function; and the method comprises determining that the feedback path transfer function is a misfit feedback path transfer function if the type of at least one determined preset feedback path transfer function is the misfit feedback path transfer function; or determining that the feedback path transfer function is an abnormal structure feedback path transfer function if the type of at least one determined preset feedback path transfer function is the abnormal structure feedback path transfer function. or if the type of at least one determined preset feedback path transfer function is the foreign matter intrusion feedback path transfer function, determining that the feedback path transfer function is the foreign matter intrusion feedback path transfer function; or if the type of at least one determined preset feedback path transfer function is the foreign matter blocking feedback path transfer function, determining that the feedback path transfer function is the foreign matter blocking feedback path transfer function further includes

[0006] In some embodiments, determining at least one preset feedback path transfer function within a preset threshold range using the feedback path transfer function includes determining the preset feedback path transfer function having the minimum difference as one determined preset feedback path transfer function if the quantity of the at least one determined preset feedback path transfer function is two or more.

[0007] In some embodiments, determining the state of the bone conduction hearing device based on a comparison result includes determining that the state of the bone conduction hearing device is normal if the feedback path transfer function is a normal feedback path transfer function; or determining that the state of the bone conduction hearing device is abnormal if the feedback path transfer function is an abnormal feedback path transfer function, and the method further includes determining the type of abnormality of the bone conduction hearing device by determining that the bone conduction hearing device is in a mis-wearing state if the feedback path transfer function is a mis-wearing feedback path transfer function; or determining that the bone conduction hearing device is in an abnormal structural state if the feedback path transfer function is an abnormal structural feedback path transfer function; or determining that the bone conduction hearing device is in a foreign body intrusion state if the feedback path transfer function is a foreign body intrusion feedback path transfer function; or determining that the bone conduction hearing device is in a foreign body blocking state if the feedback path transfer function is a foreign body blocking feedback path transfer function.

[0008] In some embodiments, the method further comprises adaptively adjusting one or more parameters of the bone conduction hearing device or transmitting reminder information to a user based on the state of the bone conduction hearing device.

[0009] In some embodiments, the state of the bone conduction hearing device includes a normal state and an abnormal state; the abnormal state includes one or more of a mis-fit state, an abnormal structural state, a foreign body intrusion state, and a foreign body blockage state.

[0010] One of the embodiments of the present disclosure provides a system for detecting the state of the bone conduction hearing device, wherein the bone conduction hearing device comprises at least a microphone, a speaker, a feedback analysis unit, and a signal processing unit, and the system comprises: a speaker configured to generate a third sound based on a first signal generated by the signal processing unit; a microphone configured to receive the third sound and generate a feedback signal; the feedback analysis unit configured to determine a feedback path transfer function from the speaker to the microphone based on the feedback signal and the first signal, obtain at least one preset feedback path transfer function, and compare the feedback path transfer function with the at least one preset feedback path transfer function; and a signal processing unit configured to determine the state of the bone conduction hearing device based on the comparison result.

[0011] In some embodiments, the at least one preset feedback path transfer function includes a standard feedback path transfer function and an abnormal feedback path transfer function, and the abnormal feedback path transfer function includes one or more of a misfit feedback path transfer function, an abnormal structure feedback path transfer function, a foreign matter intrusion feedback path transfer function, and a foreign matter blocking feedback path transfer function; comparing the feedback path transfer function with the at least one preset feedback path transfer function includes determining at least one preset feedback path transfer function within a preset threshold range using the feedback path transfer function; and determining the type of the feedback path transfer function based on the type of the at least one determined preset feedback path transfer function.

[0012] In some embodiments, determining the type of a feedback path transfer function based on the type of at least one determined preset feedback path transfer function comprises determining that the feedback path transfer function is a normal feedback path transfer function if the type of at least one determined preset feedback path transfer function is the standard feedback path transfer function; or determining that the feedback path transfer function is an abnormal feedback path transfer function if the type of at least one determined preset feedback path transfer function is the abnormal feedback path transfer function; and determining the type of the feedback path transfer function comprises determining that the feedback path transfer function is a misfit feedback path transfer function if the type of at least one determined preset feedback path transfer function is the misfit feedback path transfer function; or determining that the feedback path transfer function is an abnormal structure feedback path transfer function if the type of at least one determined preset feedback path transfer function is the abnormal structure feedback path transfer function. or if the type of at least one determined preset feedback path transfer function is the foreign matter intrusion feedback path transfer function, determining that the feedback path transfer function is the foreign matter intrusion feedback path transfer function; or if the type of at least one determined preset feedback path transfer function is the foreign matter blocking feedback path transfer function, determining that the feedback path transfer function is the foreign matter blocking feedback path transfer function further includes

[0013] In some embodiments, determining at least one preset feedback path transfer function within a preset threshold range using the feedback path transfer function includes determining the preset feedback path transfer function having the minimum difference as one determined preset feedback path transfer function if the quantity of the at least one determined preset feedback path transfer function is two or more.

[0014] In some embodiments, determining the state of the bone conduction hearing device based on a comparison result includes determining that the state of the bone conduction hearing device is normal if the feedback path transfer function is a normal feedback path transfer function; or determining that the state of the bone conduction hearing device is abnormal if the feedback path transfer function is an abnormal feedback path transfer function; and the system further includes determining the type of abnormality of the bone conduction hearing device by determining that the bone conduction hearing device is in a mis-wearing state if the feedback path transfer function is a mis-wearing feedback path transfer function; or determining that the bone conduction hearing device is in an abnormal structural state if the feedback path transfer function is an abnormal structural feedback path transfer function; or determining that the bone conduction hearing device is in a foreign object intrusion state if the feedback path transfer function is a foreign object intrusion feedback path transfer function; or determining that the bone conduction hearing device is in a foreign object blocking state if the feedback path transfer function is a foreign object blocking feedback path transfer function.

[0015] In some embodiments, the signal processing unit is configured to adaptively adjust one or more parameters of the bone conduction hearing device or to transmit reminder information to the user based on the state of the bone conduction hearing device.

[0016] In some embodiments, the state of the bone conduction hearing device includes a normal state and an abnormal state; the abnormal state includes one or more of a mis-fit state, an abnormal structural state, a foreign body intrusion state, and a foreign body blockage state.

[0017] One of the embodiments of the present disclosure provides a system for detecting the state of the bone conduction hearing device, wherein the system comprises a sound generation module, a feedback signal generation module, a feedback analysis module, and a signal processing module. The sound generation module is configured to generate a third sound based on a first signal generated by a signal processing unit. The feedback signal generation module is configured to receive the third sound and generate a feedback signal. The feedback analysis module is configured to determine a feedback path transfer function from the speaker to the microphone based on the feedback signal and the first signal, obtain at least one preset feedback path transfer function, and compare the feedback path transfer function with the at least one preset feedback path transfer function. The signal processing module is configured to determine the state of the bone conduction hearing device based on the comparison result.

[0018] One of the embodiments of the present disclosure provides a computer-readable storage medium, said storage medium stores computer instructions, and when a computer reads computer instructions in said storage medium, said computer generates a third sound based on a first signal, which is a test signal generated by said computer; receives said third sound and generates a feedback signal; determines a feedback path transfer function from the speaker to the microphone of a bone conduction hearing device based on said feedback signal and said first signal; obtains at least one preset feedback path transfer function; compares said feedback path transfer function with said at least one preset feedback path transfer function; and instructs to determine the state of said bone conduction hearing device based on the result of the comparison. Brief explanation of the drawing

[0019] The present application is further described in terms of exemplary embodiments. These exemplary embodiments are described in detail with reference to the drawings. These embodiments are not limiting exemplary embodiments, and like reference numerals denote like structures. FIG. 1 is a schematic diagram of an application scene of a transfer function detection system according to some embodiments of the present disclosure. FIG. 2 is an exemplary flowchart of a process for obtaining a vibration transfer function according to some embodiments of the present disclosure. FIG. 3 is an exemplary block diagram of a system for obtaining a vibration transfer function according to some embodiments of the present disclosure. FIG. 4 is a schematic diagram of a transfer function detection system when at least one detector according to some embodiments of the present disclosure is in a first position. FIG. 5 is a schematic diagram of a transfer function detection system when at least one detector according to some embodiments of the present disclosure is in a second position. FIG. 6 is a diagram of a first feedback path transfer function according to some embodiments of the present disclosure. FIG. 7 is a diagram of a second feedback path transfer function according to some embodiments of the present disclosure. FIG. 8 is a diagram of a vibration transfer function according to some embodiments of the present disclosure. FIG. 9 is an exemplary flowchart of a process for checking the state of a bone conduction hearing device according to some embodiments of the present disclosure. FIG. 10 is an exemplary block diagram of a system for detecting the condition of a bone conduction hearing device according to some embodiments of the present disclosure. Specific details for implementing the invention

[0020] To more clearly explain the technical details related to the embodiments of the present disclosure, the drawings referenced in the description of the embodiments are briefly introduced below. Of course, the drawings described below are merely examples or embodiments of the present disclosure. Those skilled in the art can apply the present disclosure to other similar situations based on these drawings without any creative effort. Unless clearly evident from the context or otherwise interpreted in the context, the same reference numerals in the drawings indicate the same structure or operation.

[0021] As used herein, the terms "system," "device," "unit," and / or "module" are a method of distinguishing different components, elements, parts, sections, or assemblies of different levels in ascending order. However, if other words can achieve the same purpose, they may be replaced by other expressions.

[0022] As used in this disclosure and the appended claims, the singular forms “one,” “one,” and “above” include the plural forms unless otherwise clearly indicated by the context. Generally, the terms “include” and “comprehensively” mean including the specified procedures and elements, and these procedures and elements are not exclusive. The methods or devices may include other procedures or elements.

[0023] The flowcharts used in this disclosure describe operations performed by a system according to some embodiments of this disclosure. It should be understood that the operations in the flowcharts may not be performed in the exact order. Conversely, each step may be processed in the reverse order or simultaneously. Additionally, other operations may be added to the flowcharts, and one or more operations may be omitted from these procedures.

[0024] For the convenience of explanation, the use and application process of the sound generation unit is described below using a bone conduction speaker or a speaker as an example. It should be noted that the foregoing description is for illustrative purposes only and is not intended to limit the scope of the present disclosure.

[0025] In the following description, without loss of generality, the terms “bone conduction hearing device,” “bone conduction hearing device,” “bone conduction speaker,” “speaker device,” or “bone conduction earphone” are adopted when describing bone conduction-related technology in this disclosure. The above description is merely an exemplary application of bone conduction technology. To those skilled in the art, “speaker” or “earphone” may be replaced by other similar words such as “player,” “hearing aid,” etc. In fact, various methods of practice in this disclosure can be easily applied to other non-speaker hearing devices. For example, those skilled in the art, after understanding the basic principles of the bone conduction speaker, may make various modifications and changes to the form and details of the specific methods and procedures for implementing the bone conduction speaker without departing from said principles. In particular, ambient sound pickup and processing functions may be added to the bone conduction speaker so that the speaker implements the function of a hearing aid. For example, a microphone, such as a microphone, can pick up sounds from the environment surrounding the user / wearer, process the sounds using specific algorithms, and transmit the processed sounds (or generated electrical signals) to a bone conduction speaker. That is, the bone conduction speaker is modified to add an environmental sound pickup function, and after specific signal processing, the sounds can be transmitted to the user / wearer through the bone conduction speaker, thereby implementing the function of a bone conduction hearing aid. For example, the algorithm(s) mentioned herein may include one or more combinations of noise reduction, automatic amplification control, acoustic feedback suppression, wide dynamic range compression, active environment awareness, active soundproofing, direction processing, tinnitus processing, multi-channel wide dynamic range compression, active howling suppression, volume control, etc.

[0026] In some embodiments, a hearing device (e.g., a hearing aid) may generally have both a microphone and a speaker. A portion of the sound produced by the speaker may be received by the microphone, causing howling or causing the user (e.g., a wearer) to hear an echo during the use of the hearing device. To suppress the echo or howling, it is necessary to minimize the action of the speaker on the microphone (e.g., removing the sound produced by the speaker from the signal received by the microphone). Generally, the action of the speaker on the microphone can be represented by a feedback path transfer function between the speaker and the microphone. In some embodiments, in a bone conduction hearing device (e.g., a bone conduction hearing aid), the sound generated by the bone conduction speaker may simultaneously affect the microphone through vibrational conduction and electroconduction. Accordingly, the feedback paths from the bone conduction speaker to the microphone include both electro-conduction and vibrational transmission paths. These two transmission paths correspond to different transfer functions from the bone conduction speaker to the microphones. In some situations, it is necessary to better evaluate the action of the bone conduction speaker on the microphone through different transmission paths, particularly the vibrational transmission path. To measure the vibrational transmission function, it is generally necessary to use more complex additional devices, such as an accelerometer.

[0027] Accordingly, some embodiments of the present disclosure provide a method for obtaining a vibration transfer function from a bone conduction speaker to other locations (e.g., a location where a microphone connected to the bone conduction speaker through a housing is located). One or more detectors receive a first sound at a first location and receive a second sound at a second location. The first sound may be transmitted through an electroconductive transmission path and a vibration transfer path. The second sound may be transmitted only through an electroconductive transmission path. Thus, the vibration transfer function is determined, and the test method operates more effectively and easily.

[0028] FIG. 1 is a schematic diagram of an application scene of a transfer function testing system according to some embodiments of the present disclosure. For convenience of explanation, the transfer function testing system (100) may be simply referred to as the system (100). The system (100) may include at least one detector (110), a hearing device (120), a database (130), and a processor (140). Various components of the system (100) may be connected by any communication and / or connection means including wireless connections, wired connections, or any combination of such connections capable of transmitting and / or receiving data. In some embodiments, the system (100) may be used to obtain the vibrational transfer function of a bone conduction hearing device and to test the condition of the bone conduction hearing device.

[0029] In some embodiments, the wired connection can be achieved using a metal wire, optical cable, or a mixed metal and optical cable such as a coaxial cable, communication cable, flexible cable, spiral cable, non-metallic sheathed cable, metal sheathed cable, multicore cable, twisted pair cable, ribbon cable, shielded cable, telecommunication cable, twisted pair cable, parallel twisted pair conductor, and twisted pair.

[0030] The examples described above are for convenience of explanation only. The wired connection may also be achieved using other types of transmission media, such as transmission carriers for transmitting electrical or optical signals. The wireless connection may include, but is not limited to, wireless communication, free-space optical communication, acoustic communication, electromagnetic induction, etc. The above wireless communication may include, but is not limited to, IEEE 302.11 series standards, IEEE 302.15 series standards (e.g., Bluetooth technology and Purple Bee technology), first-generation mobile communication technology, second-generation mobile communication technology (e.g., FDMA, TDMA, SDMA, CDMA, and SSMA), general packet radio service technology, third-generation mobile communication technology (e.g., CDMA2000, WCDMA, TD-SCDMA, and WiMAX), fourth-generation mobile communication technology (e.g., TD-LTE and FDD-LTE), satellite communication (e.g., GPS technology), near-field communication (NFC), and other technologies operating in the ISM frequency band (e.g., 2.4 GHz). The above free-space optical communication may include, but is not limited to, visible light, infrared signals, etc. The above acoustic communication may include, but is not limited to, sound waves, ultrasonic signals, etc. The above electromagnetic induction may include, but is not limited to, near-field communication technology. The examples described above are for convenience only. The medium of the wireless connection may be of other types, such as Z-wave technology, other paid civilian wireless bands, and military wireless bands.

[0031] In some embodiments, the hearing device (120) may generally include an electroconduction speaker and a bone conduction speaker. In some embodiments, the hearing device (120) may include a bone conduction speaker (e.g., a bone conduction speaker (122) shown in FIGS. 4 and 5) and a housing (121). The bone conduction speaker (122) and other components (e.g., a microphone) may be accommodated within the housing (121). To suppress the action of the bone conduction speaker (122) on the microphone, it may be necessary to determine a vibration transfer function from the bone conduction speaker (122) to a specific location of interest of the hearing device (120) (e.g., a location (123) shown in FIGS. 1 and 4). It should be noted that a specific location of interest may be the installation location of the microphone (e.g., the microphone actually mounted on the hearing device (120)), or any location inside or outside the hearing device (120) (e.g., any part of the hearing device (120) rigidly or elastically connected to the bone conduction microphone (122)).

[0032] In some embodiments, the at least one detector (110) may receive sound emitted by the bone conduction speaker (122) and then generate a feedback signal based on the sound. The feedback signal may reflect the action of the bone conduction speaker (122) on the at least one detector (110) (or the location of the at least one detector (110). For example, the feedback signal may be transmitted to the processor (140), and then the processor (140) may determine a feedback path transfer function from the bone conduction speaker (122) to the at least one detector (110) based on the feedback signal. In some embodiments, the at least one detector (110) may receive sounds in the environment and generate a sound signal based on the sound. The sounds in the environment may include, for example, human voices, car sounds, ambient noise, etc. In some embodiments, the at least one detector (110) may transmit the sound signal to the bone conduction speaker (122) and the processor (140), and the bone conduction speaker (122) may generate sound based on the sound signal. In some embodiments, the at least one detector (110) may transmit the sound signal to the processor (140), and then the processor (140) may transmit the sound signal to the bone conduction speaker (122), and the bone conduction speaker (122) may generate sound based on the sound signal. In some embodiments, the at least one detector (110) may include an acoustic-electric transducer such as a microphone. For example, the microphone may include a ribbon microphone, a micro-electromechanical system (MEMS) microphone, a dynamic microphone, a piezoelectric microphone, a capacitive microphone, a carbon microphone, an analog microphone, a digital microphone, etc., or any combination thereof.As another example, the microphone may include an omnidirectional microphone, a unidirectional microphone, a bidirectional microphone, an electrocardiogram microphone, etc., or any combination thereof. In some embodiments, the at least one detector (110) may include a mechanical conduction microphone and a bone conduction microphone. For convenience of explanation, the present disclosure describes the microphone as the detector (110).

[0033] The processor (140) may process data and / or information obtained from the at least one detector (110), the bone conduction speaker (122), the database (130), or other components of the system (100). For example, the processor (140) may process an electrical signal generated after the microphone picks up sound emitted by the bone conduction speaker (122), thereby determining a feedback path transfer function from the bone conduction speaker (122) to the microphone. In some embodiments, the processor (140) may be a single server or a group of servers. The group of servers may be centralized or decentralized. In some embodiments, the processor (140) is a local or remote device. For example, the processor (140) may obtain information and / or data from the detector (110), the bone conduction speaker (122), and / or the database (130). As another example, the processor (140) can be directly connected to the at least one detector (110), the bone conduction speaker (122), and / or the database (130) to access information and / or data.

[0034] In some embodiments, the processor (140) may include a test signal generation unit (141) and a feedback path determination unit (142) (as shown in FIGS. 4 and 5). The test signal generation unit (141) may transmit a test audio signal (e.g., a first test audio signal) to the bone conduction speaker (122) and the feedback path determination unit (142). The bone conduction speaker (122) may generate a sound (e.g., a first sound) based on the test audio signal. After receiving the sound emitted by the bone conduction speaker (122), the at least one detector (110) may generate a feedback signal (e.g., a first feedback signal) based on the sound and transmit the feedback signal to the feedback path determination unit (142), and the feedback path determination unit (142) may determine the feedback path transfer function based on the test audio signal and the feedback signal output by the at least one detector (110). In some embodiments, based on the feedback signal transmitted through both the electroconduction transmission path and the vibration transmission path and the test audio signal corresponding to the feedback signal, the feedback path determination unit (142) may determine a corresponding feedback path transfer function (e.g., a first feedback path transfer function). Based on the feedback signal transmitted only through the electro-conduction transmission path and the test audio signal corresponding to the feedback signal, the feedback path determination unit (142) can determine a corresponding feedback path transfer function (e.g., a second feedback path transfer function). In some embodiments, the feedback path determination unit (142) can determine the vibration transfer function based on two predetermined feedback path transfer functions.

[0035] In some embodiments, the processor (140) may include a feedback analysis unit and a signal processing unit. In some embodiments, the processor (140) may determine the feedback path transfer function from the bone conduction speaker (122) of the bone conduction hearing device to the at least one detector (110) in real time based on the feedback signal of the at least one detector (110). The processor (140) may determine the real-time state of the bone conduction hearing device by comparing the feedback path transfer function determined in real time with other preset feedback path transfer functions.

[0036] The database (130) may store data, commands, and / or any other information of the first feedback path transfer function described above, for example. In some embodiments, the database (130) may store data obtained from the at least one detector (110), the bone conduction speaker (122), and / or the processor (140). In some embodiments, the database (130) may store data and / or commands that are used by the processor (140) to execute or are used to execute the exemplary method described in this disclosure. In some embodiments, the database (130) may include mass memory, removable memory, volatile read-write memory, read-only memory (ROM), etc., or any combination thereof. In some embodiments, the database (130) may be executed on a cloud platform.

[0037] In some embodiments, the database (130) may communicate with at least one other component in the system (100) (e.g., the processor (140)). At least one component in the system (100) may access data stored in the database (130) (e.g., the first feedback path transfer function). In some embodiments, the database (130) may be part of the processor (140).

[0038] FIG. 2 is an exemplary flowchart of a process for obtaining a vibration transfer function according to some embodiments of the present disclosure. In particular, the process (200) may be executed by the system (100) (e.g., the processor (140)). For example, the process (200) may be stored in a storage device (e.g., the database (130)) in the form of a program or command, and the process (200) may be executed when the system (100) (e.g., the processor (140)) executes the program or command.

[0039] In procedure 210, the first test audio signal and the second test audio signal may be generated by the test signal generation unit (141). In some embodiments, procedure 210 may be executed by the test audio generation module (310).

[0040] In some embodiments, the test signal generating unit (141) may be a signal source capable of generating and outputting electrical signals having specified characteristics. For example, the first test audio signal or the second test audio signal may include a white noise signal, a pure audio signal, a pulse signal, a narrowband noise, a narrowband chirp, a modulated audio signal, and / or a sweep frequency audio signal. When a sound generating device (e.g., the bone conduction speaker (122)) receives a white noise signal, the sound generating device may generate noise having the same energy density across all frequencies, i.e., white noise. When the generating device generates a pure audio signal, the sound generating device may generate a single audio sound, i.e., a pure sound. When the generating device generates a sweep frequency audio signal, the sound generating device may generate a sound, i.e., a sweep frequency sound, by continuously changing the frequency in a frequency band from a high frequency to a low frequency (or from a low frequency to a high frequency).

[0041] In some embodiments, the first test audio signal and the second test audio signal may be signals generated continuously by the test signal generation unit (141) at different times and are each used to test the device to be tested. In some embodiments, to maintain consistency between the two test conditions, the first test audio signal and the second test audio signal may be exactly the same, that is, the type and frequency of the first test audio signal and the second test audio signal may be the same. For example, the first test audio signal and the second test audio signal may be the same sweep frequency signals. In some embodiments, the type of the first test audio signal and the second test audio signal may be different. For example, the first test audio signal may be the white noise signal, and the second test audio signal may be a pure audio signal.

[0042] In some alternative embodiments, the test of the device using the first test audio signal and the test of the device using the second test audio signal may be performed simultaneously. In this case, the test signal generation unit (141) may generate only one test audio signal, for example, the first test audio signal or the second test audio signal, and this may achieve the purpose of the test. Further explanation can be found in the relevant description of procedure 230.

[0043] In procedure 220, the bone conduction speaker (122) can generate the first sound based on the first test audio signal and can generate the second sound based on the second test audio signal.

[0044] The first test audio signal and the second test audio signal may be transmitted to the bone conduction speaker (122) in the form of electrical signals, and the bone conduction speaker (122) may convert the electrical signals into the first sound and the second sound, respectively. In some embodiments, the bone conduction speaker (122) may include a diaphragm and a transducer. The transducer may be configured to generate vibrations by converting the electrical signals corresponding to the first test audio signal and the second test audio signal into mechanical vibrations, for example. The transducer may drive the diaphragm to vibrate. For example, the diaphragm may be mechanically connected to the transducer and vibrate together with it. In a practical application (e.g., when the user wears the hearing device (120)), the diaphragm may come into contact with the user's skin and transmit the vibrations to the auditory nerve through the human tissue and skeleton, so that the user can hear the sound.

[0045] In some embodiments, the bone conduction speaker (122) may sequentially generate the first sound and the second sound based on the first test audio signal and the second test audio signal. For example, the first sound may be generated first, and after the microphone receives the first sound, the second sound may be generated and the first feedback signal may be output. Alternatively, the second sound may be generated first, and after the microphone receives the second sound, the first sound may be generated and the second feedback signal may be output.

[0046] In some embodiments, the first sound and the second sound may be generated sequentially by the same bone conduction speaker (122) at the same location of the same hearing device (120). In this case, by changing the position of the microphone, the action of the sound produced by the bone conduction speaker (122) at different locations can be obtained, and thus transfer functions corresponding to different acoustic paths can be obtained. In other embodiments, the bone conduction speaker (122) may include two bone conduction speakers (122) of the same structure and material, and the two bone conduction speakers (122) may each generate the first sound and the second sound based on the first test audio signal and the second test audio signal.

[0047] In procedure 230, at least one detector may output a first feedback signal after receiving the first sound at the first position, and may output a second feedback signal after receiving the second sound at the second position.

[0048] The above at least one detector receives the first sound and generates the first feedback signal based on the first sound, receives the second sound and generates the second feedback signal, and can transmit the first feedback signal and the second feedback signal to a feedback path test device (e.g., the feedback path determination unit (142)).

[0049] For convenience of explanation, the following description is given by way of example the at least one detector including a conduction microphone (e.g., the microphone in FIG. 4 and FIG. 5). The microphone can receive the first sound transmitted by the bone conduction speaker (122) via the first method at the first location. For example, the bone conduction speaker (122) may be fixed to the hearing device (120) (i.e., the bone conduction speaker (122) may be rigidly or elastically connected to the hearing device (120)), and the first location may be another location near the hearing device (120) (e.g., the housing (121) in FIG. 1 or FIG. 4). When the microphone is at the first location, the microphone may be rigidly or elastically connected to the hearing device (120). According to the sound generation principle of the bone conduction speaker (122), when the bone conduction speaker (122) generates the first sound, the bone conduction speaker (122) can drive the hearing device (120) (the housing) to vibrate, and the vibration of the hearing device (120) can be transmitted to the microphone near the hearing device (120). For example, as shown in FIG. 4, the first location may be a location adjacent to the housing (121) of the hearing device (120). Assuming that the vibration direction of the housing (121) is parallel to the vibration direction of the vibrating membrane of the microphone, the vibration of the housing (121) may cause the vibrating membrane of the microphone to vibrate. At the same time, the bone conduction speaker (122) may drive the vibration of the surrounding air when generating the first sound, and the vibration of the air may be transmitted to the microphone in the form of electroconduction. Accordingly, the first sound can be transmitted to the microphone simultaneously through vibrational conduction and electro-conduction. In other words, the first method may include vibrational conduction and electro-conduction.

[0050] In some embodiments, the microphone may generate the first feedback signal based on the first sound transmitted through the two transmission paths, and the microphone may transmit the first feedback signal to the feedback path determination unit (142) and / or store it in a storage device (e.g., the database (130)).

[0051] Similarly, the microphone may receive the second sound transmitted by the bone conduction speaker (122) via a second method at the second location. For example, the second location may be near the first location but not in contact with the hearing device (120) (the housing (121)). When the microphone is at the second location, the microphone may be considered to be suspended relative to the hearing device (120). Alternatively, the second location may be located inside or outside the (housing) of the hearing device (120), provided that the microphone is not rigidly or elastically connected to the hearing device (120) at its location. For example, in FIG. 5, since the microphone is not in contact with the housing (121) when it is at the second location, the diaphragm of the microphone may receive only the sound transmitted by air and not be affected by the vibration of the housing (121). Accordingly, the second sound may be transmitted only to the microphone via the electroconduction path. In other words, the second method described above may include only the electroconduction path. In some embodiments, the microphone may generate the second feedback signal based on the second sound transmitted via the electroconduction path, and the microphone may transmit the second feedback signal to the feedback path determination unit (142) and / or store it in a storage device (e.g., the database (130)). When the distance between the second location and the first location is very small (e.g., less than 1 mm, 5 mm, 1 cm, or 5 cm), it can be generally understood that the electroconduction path from the bone conduction speaker (122) to the first location is the same as the electroconduction path from the bone conduction speaker (122) to the second location.

[0052] In some alternative embodiments, when the microphone is at the first position and the vibration direction of the housing (121) is perpendicular to the vibration direction of the vibrating membrane of the microphone, the vibration of the housing (121) may not cause vibration of the vibrating parts of the microphone (e.g., the vibrating membrane). In this case, it can be assumed that the microphone can receive only sound transmitted by air at the first position. Therefore, the process of receiving the second sound by installing the microphone at the second position far from the housing (121) can be replaced by adjusting the direction of the microphone, so that when the microphone is at the first position, the vibration direction of the vibrating membrane may be perpendicular to the vibration direction of the housing (121). Since the vibrating membrane is not affected by the vibration of the housing (121), even if the microphone is close to the housing (121), the second sound received by the microphone can be conducted only through electroconductivity. Therefore, when the vibration direction of the diaphragm of the microphone is perpendicular to the vibration direction of the housing (121), it is necessary to consider only the electroconductive feedback path transfer function when determining the feedback path transfer function. It can be understood that when the bone conduction speaker (122) generates the first sound and the second sound, it may be necessary to install the diaphragm of the microphone at the first position so that its vibration direction is parallel or perpendicular to the vibration direction of the housing (121). Then, the microphone can output the first feedback signal and the second feedback signal, respectively, based on the received first sound and the second sound.

[0053] In some embodiments, the at least one detector (e.g., the electroconductive microphone or the microphone) may include a first detector (e.g., the first electroconductive microphone) and a second detector (e.g., the second electroconductive microphone) of the same structures and materials. In some embodiments, the at least one detector (e.g., the electroconductive microphone or the microphone) may include the first detector (e.g., the silicon microphone) and the second detector (e.g., the electret microphone) of different structures and materials. In some embodiments, the microphone may be an electroconductive microphone or a bone conduction microphone. For ease of understanding, an electroconductive microphone is described in this disclosure. The first detector may be located at the first position for receiving the first sound, and the second detector may be located at the second position for receiving the second sound. Similar to the above embodiments, the first detector may output the first feedback signal after receiving the first sound, and the second detector may output the second feedback signal after receiving the second sound.

[0054] In other embodiments, the first detector and the second detector may be installed at the first position and the second position, respectively, and at the same time, the first detector and the second detector may receive the same sound simultaneously. For example, the bone conduction speaker (122) may generate the first sound based on only one test audio signal (e.g., the first test audio signal), and the first detector and the second detector may be located at the first position and the second position, respectively, to receive the first sound simultaneously. In these embodiments, although the first detector and the second detector receive the same sound, the first sound transmission path received by the first detector may include an electroconduction transmission path and a vibration transmission path, and the first sound received by the second detector may include only an electroconduction transmission path, and thus the feedback signals output by the first detector and the second detector may be different. For convenience of explanation, the feedback signal output by the first detector may be called the first feedback signal, and the feedback signal output by the second detector may be called the second feedback signal. The first feedback signal and the second feedback signal output by the same detector located at the first position and the second position, respectively, may have a small difference, and the first feedback signals and the second feedback signals can be considered to be generally the same.

[0055] In procedure 240, the feedback path determination unit (142) can determine a vibration transfer function from the bone conduction speaker (122) to the first position based on the first test audio signal, the second test audio signal, the first feedback signal, and the second feedback signal. In some embodiments, procedure 240 may be executed by a processing module (320).

[0056] In some embodiments, after receiving the first feedback signal and the second feedback signal output from the microphone, the feedback path determination unit (142) may determine the feedback path transfer function based on the first test audio signal, the second test audio signal, the first feedback signal, and the second feedback signal according to the feedback path transfer function measurement principle. In some embodiments, the feedback path determination unit (142) may obtain the first test audio signal from the test signal generation unit (141). In some embodiments, after receiving the first test audio signal and the first feedback signal, the feedback path determination unit (142) may determine the first feedback path transfer function of the first sound transmitted from the bone conduction speaker (122) to the first location based on the first test audio signal and the first feedback signal. For example, the feedback path determination unit (142) may convert the first test audio signal to obtain a first converted test audio signal and convert the first feedback signal to generate a first converted feedback signal. In some embodiments, the feedback path determination unit (142) may convert the first test audio signal and the first feedback signal using a Z-transform. For example, the first test audio signal input by the bone conduction speaker (122) may be converted into the first converted test audio signal by a Z-transform, and the first feedback signal output by the electroconduction microphone may be converted into the first converted feedback signal by a Z-transform. In some embodiments, the conversion may be performed using a Fourier transform method, a Laplace transform method, a linear predictive encoder, or other speech model solving methods.

[0057] In some embodiments, the transfer function measurement method may include, but is not limited to, a cross-analysis method, an adaptive estimation method, etc. In some embodiments, the transfer function measurement method may include converting a sound signal and an electrical signal to obtain a converted signal, and then determining a converted function based on the converted signal. Related explanations can be found in the explanation regarding formulas (1) to (5).

[0058] For the purpose of explanation, the feedback path determination unit (142) can obtain the first feedback path transfer function through the following formula (1) based on the first conversion test audio signal and the first conversion feedback signal.

[0059] , (1)

[0060] Here, The above is the first conversion test audio signal, and The above is the first conversion feedback signal, and is the first feedback path transfer function. As described above, the first feedback path transfer function This may indicate the operation of the electroconductive transmission path and the vibration transmission path from the bone conduction speaker (122) to the first position.

[0061] In some embodiments, the feedback path determination unit (142) may obtain a second test audio signal from the test signal generation unit (141). In some embodiments, after receiving the second test audio signal and the second feedback signal, the feedback path determination unit (142) may determine the second feedback path transfer function of the second sound transmitted from the bone conduction speaker (122) to the second location based on the second test audio signal and the second feedback signal. For example, the feedback path determination unit (142) may convert the second test audio signal and the second feedback signal, respectively, to obtain the second converted test audio signal and the second converted feedback signal. In some embodiments, the feedback path determination unit (142) may convert the second test audio signal and the second feedback signal using a Z-transform. For example, the second test audio signal input by the bone conduction speaker (122) can be converted into the second converted test audio signal by Z-transform, and the second feedback signal output by the microphone can be converted into the second converted feedback signal by Z-transform.

[0062] Similarly, for the purpose of explanation, the feedback path determination unit (142) can obtain the second feedback path transfer function through formula (2) based on the second conversion test audio signal and the second conversion feedback signal.

[0063] , (2)

[0064] Here, The above is the second conversion test audio signal, and The above second conversion feedback signal, and is the second feedback path transfer function. As described above, the second feedback path transfer function It may only include the operation of the electroconductive transmission path between the bone conduction speaker (122) and the second position (or the first position).

[0065] By solving the above-described formulas (1) and (2), the feedback path determination unit (142) determines the first feedback path transfer function corresponding to the first sound transmitted through the electroconductive transmission path and the vibration transmission path, determines the second feedback path transfer function corresponding to the second sound transmitted through the electroconductive transmission path, and then, the vibration transfer function from the bone conduction speaker (122) to the first position can be determined through subsequent analysis.

[0066] In some embodiments, the feedback path determination unit (142) is the first feedback path transfer function and the above second feedback path transfer function Based on this, a vibration transfer function from the bone conduction speaker (122) to the first position can be determined.

[0067] In particular, since the first transmission path of the first sound received by the microphone at the first position may include a conduction transmission path and a vibration transmission path, and the second transmission path of the second sound received by the microphone at the second position may include only a conduction transmission path, the air output signals of the conduction microphone (i.e., the first feedback signal and the second feedback signal) may be different.

[0068] For the purpose of explanation, a first feedback path transfer function including a conduction path and a vibration path can be expressed as follows.

[0069] , (3)

[0070] Here, is the electroconductive feedback path transfer function from the bone conduction speaker (122) to the first position, and is a vibration transfer function from the bone conduction speaker (122) to the first position.

[0071] FIG. 6 is the first feedback path transfer function determined by the above formula (3). It is a diagram.

[0072] In some embodiments, considering the short distance between the second position and the first position, the electroconductive transmission path from the bone conduction speaker (122) to the second position may be generally the same as the electroconductive transmission path from the bone conduction speaker (122) to the first position. Accordingly, the transfer function of the second feedback path containing only the electroconductive transmission path can be expressed as follows.

[0073] , (4)

[0074] Here, The above is a conduction feedback path transfer function from the bone conduction speaker (122) to the second location, and The electroconductive feedback path transfer function from the bone conduction speaker (122) to the first position It may be the same as or as an alternative. FIG. 7 is the second feedback path transfer function determined by the above formula (2). It represents the diagram. As described above, the second feedback path transfer function This may refer only to the operation of the electroconductive transmission path between the bone conduction speaker (122) and the second position (or the first position).

[0075] In some embodiments, the feedback path determination unit (142) is the first feedback path transfer function and the above second feedback path transfer function Based on this, a vibration transfer function from the bone conduction speaker (122) to the first position can be determined. In particular, the second feedback path transfer function a above-mentioned conduction feedback pathway transfer function Includes only, and the first feedback path transfer function a above-mentioned conduction feedback pathway transfer function and the above vibration transfer function Because it includes, the feedback path determination unit (142) subtracts the formula (4) from the formula (3) to obtain the vibration transfer function can decide.

[0076] . (5)

[0077] FIG. 6 is a diagram of the first feedback path transfer function including the electroconduction path and the vibration path. The curve in FIG. 6 represents the situation where the first sound received at the first location is transmitted through both the electroconduction path and the vibration path at different frequencies. It can be seen that within the range of about 1000 Hz (e.g., 600 Hz to 1000 Hz), the action through the electroconduction path and the vibration path at the first location of the bone conduction speaker has a valley (e.g., small action) relative to other frequency ranges; and within the ranges of 300 Hz to 400 Hz and 2000 Hz to 3000 Hz, the action through the electroconduction path and the vibration path at the first location of the bone conduction speaker has a peak (e.g., large effect) relative to other frequency ranges.

[0078] FIG. 7 is a diagram of the second feedback path transfer function that includes only the electroconductive transmission path. The curve in FIG. 7 represents the situation where the second sound received at the second location is transmitted through only the electroconductive path at different frequencies. When the frequency is within the range of 0 Hz to 1000 Hz, the bone conduction speaker has a small effect on the second location through the electroconductive path. When the frequency is within the range of 1000 Hz to 3000 Hz, the bone conduction speaker may have a large effect on the second location through the electroconductive path. In some embodiments, when the second feedback path transfer function in FIG. 7 is subtracted from the first feedback path transfer function in FIG. 6, the curve shown in FIG. 8 can be obtained. In FIG. 8, it can be seen that the vibration transmission path may have a greater effect on the part having a frequency within the range of 0 Hz to 1000 Hz, and a smaller effect on the part having a frequency of 1000 Hz or higher. According to FIG. 6, FIG. 7, and FIG. 8, it can be seen that the effect on the first position through the vibration transmission path of the bone conduction speaker is mainly concentrated in the low frequency range (e.g., less than 1000 Hz), and the effect on the first position (or the second position) through the vibration transmission path of the bone conduction speaker is mainly concentrated in the high frequency range (e.g., greater than 1000 Hz).

[0079] In some embodiments, the feedback path determination unit (142) can determine a vibration feedback signal from the bone conduction speaker (122) to the first position based on the first feedback signal and the second feedback signal.

[0080] For the purpose of explanation, the feedback path determination unit (142) can obtain the vibration feedback signal through the formula (6) based on the first feedback signal and the second feedback signal.

[0081] , (6)

[0082] Here, is the first feedback signal above, and is the second feedback signal mentioned above, and is the above vibration feedback signal.

[0083] In some embodiments, the feedback path determination unit (142) can determine a vibration transfer function from the bone conduction speaker (122) to the first position based on the first test audio signal, the second test audio signal, and the vibration feedback signal.

[0084] In some embodiments, the feedback path determination unit (142) may convert the first test audio signal, the second test audio signal, and the vibration feedback signal, respectively, to obtain the first converted test audio signal, the second converted test audio signal, and the converted vibration feedback signal. For example, the first test audio signal The first conversion test audio signal is converted by Z-transform. ...can be obtained, and the second test audio signal is converted by Z-transform and the above first conversion test audio signal ...can be obtained, and the second test audio signal The first conversion test audio signal converted by Z-transform You can obtain.

[0085] In some embodiments, the feedback path determination unit (142) may determine the first feedback path transfer function from the sound generation unit to the first location based on the first conversion test audio signal, the second conversion test audio signal, and the conversion vibration feedback signal. In particular, the feedback path determination unit (142) may obtain an average conversion test audio signal by determining the average or weighted average of the first conversion test audio signal and the second conversion test audio signal.

[0086] For the purpose of interpretation, the feedback path determination unit (142) can obtain the average of the conversion test audio signals through the formula (7) based on the first conversion test audio signal and the second conversion test audio signal.

[0087] , (7)

[0088] Here, The above is the first conversion test audio signal, and The above is the second conversion test audio signal, and is the average converted test audio signal.

[0089] In some embodiments, the feedback path determination unit (142) can obtain a vibration transfer function from the bone conduction speaker (122) to the first position based on the average conversion test audio signal and the conversion vibration feedback signal.

[0090] For the purpose of explanation, the feedback path determination unit (142) can obtain a vibration transfer function from the bone conduction speaker (122) to the first position through the formula (8) based on the average conversion test audio signal and the conversion vibration feedback signal.

[0091] , (8)

[0092] Here, is the average converted test audio signal, and is the above-mentioned converted vibration feedback signal, and is the above vibration transfer function.

[0093] In some embodiments, the feedback path determination unit (142) may obtain an average test audio signal by measuring the average and weighted average of the first test audio signal and the second test audio signal. The average test audio signal and the vibration feedback signal may be converted to obtain an average converted test audio signal and a converted vibration feedback signal. Then, based on the average converted test audio signal and the converted vibration feedback signal, a vibration transfer function from the bone conduction speaker (122) to the first position may be obtained.

[0094] It should be noted that the foregoing description is for illustrative purposes only and is not intended to limit the scope of the present disclosure. To those skilled in the art, many changes and modifications may be made under the guidance of the content of the present disclosure. The features, structures, methods, and other features of the exemplary embodiments described herein may be combined in various ways to obtain additional and / or other exemplary embodiments. For example, the feedback path determination unit (142) may include a first determination unit and a second determination unit, the first determination unit may be configured to determine the first feedback path transfer function of the first feedback path, and the second determination unit may be used to determine the second feedback path transfer function. However, such changes and modifications do not depart from the scope of the present disclosure.

[0095] FIG. 3 is an exemplary block diagram of a system for obtaining a vibration transfer function according to some embodiments of the present disclosure. The system (300) for obtaining the vibration transfer function may simply be referred to as the system (300). As shown in FIG. 3, the system (300) may include a test audio generation module (310) and a processing module (320). In some embodiments, the system (300) may be executed by the system (100) shown in FIG. 1 (e.g., the processor (140)).

[0096] The test audio generation module (310) may be configured to generate a first test audio signal and a second test audio signal. In some embodiments, the first test audio signal or the second test audio signal may include at least one of a white noise signal, a pure audio signal, a pulse signal, a narrowband noise, a narrowband chirp, a modulated audio signal, and / or a sweep audio signal. In some embodiments, the types and frequencies of the first test audio signal and the second test audio signal may be the same, for example, the first test audio signal and the second test audio signal may be pure audio signals of the same frequency. In some embodiments, the type of the first test audio signal and the type of the second test audio signal may be different. For example, the first test audio signal may be the white noise and the second test audio signal may be the pure audio signal. In some embodiments, the test audio generation module (310) may generate only one test audio signal, such as the first test audio signal or the second test audio signal, and this may achieve the purpose of obtaining the vibration transfer function. For details, please refer to the relevant description in Procedure 230.

[0097] The processing module (320) may be used to determine a vibration transfer function from the bone conduction speaker (122) to the first location based on the first test audio signal, the second test audio signal, the first feedback signal, and the second feedback signal. The first feedback signal may reflect a signal transmitted from the bone conduction speaker (122) to the first location through a vibration transfer path and an electroconduction transfer path, and the second feedback signal may reflect a signal transmitted from the bone conduction speaker (122) to the second location through an electroconduction transfer path. The first feedback signal may be output by at least one microphone after receiving the first sound at the first location, and the second feedback signal may be output by at least one microphone after receiving the second sound at the second location. The first sound and the second sound may each be generated by the bone conduction speaker (122) based on the first test audio signal and the second test audio signal. For more information regarding generating the first sound and the second sound based on the first test audio signal and the second test audio signal, please refer to the detailed description of procedure 220, which is not duplicated here.

[0098] In some embodiments, after receiving the first test audio signal, the processing module (320) may determine the first feedback path transfer function from the first sound transmitted from the bone conduction speaker (220) to the first location based on the first test audio signal and the first feedback signal. For more information regarding the determination of the first feedback path transfer function, please refer to the detailed description of procedure 240 in FIG. 2, which is not duplicated herein.

[0099] In some embodiments, the processing module (320) may determine the second feedback path transfer function of the second sound transmitted from the bone conduction speaker (122) to the second location based on the second test audio signal and the second feedback signal. For more information regarding the determination of the second feedback path transfer function, please refer to the detailed description of procedure 240 in FIG. 2, which is not duplicated herein.

[0100] In some embodiments, the processing module (320) may determine a vibration transfer function from the bone conduction speaker (122) to the first location based on the first feedback path transfer function and the second feedback path transfer function. For more information regarding determining the vibration transfer function from the bone conduction speaker (122) to the first location, please refer to the detailed description of procedure 240 in FIG. 2, which is not duplicated herein.

[0101] In some embodiments, the processing module (320) may determine the vibration feedback signal from the bone conduction speaker (122) to the first location based on the first feedback signal and the second feedback signal. In some embodiments, the processing module (320) may determine the vibration transfer function from the bone conduction speaker (122) to the first location based on the first test audio signal, the second test audio signal, and the vibration feedback signal. For more information regarding determining the vibration transfer function from the bone conduction speaker (122) to the first location, refer to the detailed description of procedure 240 in FIG. 2, which is not duplicated herein.

[0102] It should be noted that the foregoing description is for illustrative purposes only and is not intended to limit the scope of the present disclosure. To those skilled in the art, many changes and modifications may be made under the guidance of the content of the present disclosure. The features, structures, methods, and other features of the exemplary embodiments described herein may be combined in various ways to obtain additional and / or other exemplary embodiments. For example, the processing module (320) may include a first processing module and a second processing module, wherein the first processing module may be configured to determine the first feedback path transfer function of the first feedback path, and the second processing module may be configured to determine the second feedback path transfer function. However, such changes and modifications do not depart from the scope of the present disclosure.

[0103] In other embodiments of the present disclosure, a computer-readable storage medium may be provided comprising at least one processor (140) and at least one database (130). The at least one database (130) may be configured to store computer instructions, and the at least one processor (140) may be configured to perform the processing (200) by executing at least a portion of the computer instructions.

[0104] In other embodiments of the present disclosure, a method for detecting the state of a bone conduction hearing device may be provided. FIG. 9 is an exemplary flowchart of a process for detecting the state of a bone conduction hearing device according to some embodiments of the present disclosure. The bone conduction hearing device may include at least a microphone, a speaker, a feedback analysis unit, and a signal processing unit. In some embodiments, the microphone may include a bone conduction microphone, an electroconduction microphone, etc. The microphone may be an exemplary embodiment of the at least one detector described in the present disclosure, for example, the microphone may be the microphone shown in FIG. 4 and FIG. 5. The speaker may include a bone conduction speaker configured to convert electrical signals into vibration signals, which may be the same as or different from the bone conduction speaker (122). The microphone and the bone conduction speaker may each be mounted at different locations on the bone conduction hearing device. For example, the microphone and the speaker may each be fixed at different locations on the housing of the bone conduction hearing device. In some embodiments, the feedback analysis unit and the signal processing unit may be two independent devices or components that perform two different functions of a single device. For example, the feedback analysis unit and the signal processing unit may be combined with a state detection device. It can be understood that the state detection device may be combined with the microphone and the speaker to form an integrated device, or may be a device independent from the microphone and the speaker. To distinguish between the two installation methods, the following descriptions provide two application scenarios. For example, when the state detection device is combined with the microphone and the speaker to form an integrated device, the bone conduction hearing device can perform state self-detection before or during use to detect whether the bone conduction hearing device is in a normal state or an abnormal state.The above abnormal state may include one or more of a mis-fitting state, an abnormal structural state, a foreign object intrusion state, and a foreign object blocking state. As another example, if the state detection device is installed independently of the microphone and the speaker, the bone conduction hearing device may communicate with and / or be connected to the state detection device before or during use to detect the state of the bone conduction hearing device and to detect whether the bone conduction hearing device is in a normal state or an abnormal state. The above abnormal state may include one or more of a mis-fitting state, an abnormal structural state, a foreign object intrusion state, and a foreign object blocking state.

[0105] A method for checking the condition of the above bone conduction hearing device may include the following procedures.

[0106] In procedure 910, the speaker may generate a third sound based on the first signal. In some embodiments, the first signal may be similar to the first test audio signal or the second test audio signal, and is not duplicated here. In some embodiments, procedure 910 may be executed by a sound generation module (1010).

[0107] In some embodiments, the first signal (e.g., a sound test signal) may be generated by the signal processing unit and may be transmitted to the speaker, and the speaker may convert the first signal into the third sound.

[0108] In procedure 920, the microphone may receive the third sound and generate a feedback signal. In some embodiments, procedure 920 may be executed by the feedback signal generation module (1020).

[0109] The sound generated by the speaker may be received by the microphone, and the microphone may generate corresponding feedback information. In some embodiments, after the microphone receives the third sound, it may generate a feedback signal based on the third sound and transmit the feedback signal to the feedback analysis unit. In some embodiments, the microphone may generate a feedback signal in a manner similar or identical to the first feedback signal described above.

[0110] In procedure 930, the feedback analysis unit may determine a feedback path transfer function from the speaker of the bone conduction hearing device to the microphone based on the feedback signal of the microphone and the first signal. Procedure 930 may be executed by a feedback analysis module (1030).

[0111] In some embodiments, a method for determining the feedback path transfer function from the speaker of the bone conduction hearing device to the microphone is the first feedback path transfer function in FIG. 2 and / or the second feedback path transfer function above It may be the same as the method for determining. For the purpose of interpretation, the feedback path transfer function from the speaker of the bone conduction hearing device to the microphone It can be determined by formula (9).

[0112] , (9)

[0113] Here, ... displays a first transformed signal obtained by performing the Z-transform on the first signal input by the bone conduction hearing device, and It displays a transformed feedback signal obtained by performing the Z-transform on the feedback signal output by the above microphone.

[0114] By performing the Z-transform on the first signal and the feedback signal, the first transformed signal and the above conversion feedback signal It can be obtained. Therefore, the feedback path transfer function from the speaker of the bone conduction hearing device to the microphone can be determined by the formula (9).

[0115] In procedure 940, at least one preset feedback path transfer function can be obtained. Procedure 940 can be executed by the feedback analysis module (1030).

[0116] The above-mentioned preset feedback path transfer function(s) can be understood as feedback path transfer function(s) that are pre-installed or stored in a storage device (e.g., the database (130)). In some embodiments, the above-mentioned preset feedback path transfer function(s) may include a feedback path transfer function determined by the method disclosed in other embodiments of the present disclosure (e.g., procedure 240), such as the above-mentioned first feedback path transfer function. In some embodiments, the above-mentioned preset feedback path transfer function(s) may be a feedback path transfer function that is manually installed by an operator based on experience. In some embodiments, the above-mentioned preset feedback path transfer function(s) may include at least one of a standard feedback path transfer function or an abnormal feedback path transfer function. The above-mentioned standard feedback path transfer function may be a feedback path transfer function corresponding to the normal state of the bone conduction hearing device. For example, the standard feedback path transfer function may reflect the feedback path characteristic function of the bone conduction hearing device when worn by a wide range of people, or it may be a personalized feedback path characteristic function of a specific user when worn and used normally. The abnormal feedback path transfer function may be a feedback path transfer function corresponding to the abnormal state of the bone conduction hearing device. The abnormal feedback path transfer function may include one or more of a mis-wearing feedback path transfer function, an abnormal structure feedback path transfer function, a foreign object intrusion feedback path transfer function, and a foreign object blocking feedback path transfer function. In some embodiments, the abnormal feedback path may correspond to various possible abnormal feedback situations. In some embodiments, the preset feedback path transfer function(s) may include feedback path transfer functions from a speaker to a microphone when the bone conduction hearing device is in a different state.Different states of the bone conduction hearing device may include a state when the bone conduction hearing device is worn by the user (wherein the speaker or the housing of the bone conduction hearing device in close contact with the user's face) and a state when it is not worn by the user (wherein the speaker or the housing of the bone conduction hearing device not in close contact with the user's face). Correspondingly, the at least one preset feedback path transfer function may include a feedback path transfer function when the bone conduction hearing device is worn by the user (also known as the "first preset feedback path transfer function") and a feedback path transfer function when it is not worn by the user (also known as the "second preset feedback path transfer function").

[0117] In procedure 950, the feedback path transfer function can be compared with at least one preset feedback path transfer function. Procedure 950 can be executed by the feedback analysis module (1030).

[0118] In some embodiments, the feedback path transfer function determined in procedure 930 may be compared with at least one preset feedback path transfer function to determine the state of the bone conduction hearing device. In some embodiments, it may be determined whether the difference between the feedback path transfer function and the standard feedback function among the at least one preset feedback path transfer function is within a preset threshold; if the difference is within the preset threshold, the feedback path transfer function may be determined to be normal, and if not, the feedback path transfer function may be determined to be abnormal. In some embodiments, it may be determined whether the ratio of the feedback path transfer function to the standard feedback function among the at least one preset feedback path transfer function is within the preset threshold range. If the ratio is within the preset threshold range, the feedback path transfer function may be determined to be normal, and if not, the feedback path transfer function may be determined to be abnormal. In some embodiments, it may be determined whether the difference between the feedback path transfer function and the abnormal feedback function among the at least one preset feedback path transfer function is within a preset threshold range. If the difference is within the preset threshold range, the feedback path transfer function may be determined to be abnormal, and if not, the feedback path transfer function may be determined to be normal. In some embodiments, it may be determined whether the ratio of the feedback path transfer function to the abnormal feedback function among the at least one preset feedback path transfer function is within the preset threshold range. If the ratio is within the preset threshold range, the feedback path transfer function may be determined to be abnormal, and if not, the feedback path transfer function may be determined to be normal. In some embodiments, the preset threshold range may be manually set and adjusted according to different circumstances, and this is not limited to the present disclosure.

[0119] In some embodiments, when the at least one preset feedback path transfer function includes at least two preset feedback path transfer functions, the preset feedback path transfer function that has a small difference from the feedback path transfer function may be determined as the final preset feedback path transfer function. For example, the at least one preset feedback path transfer function may include a first preset feedback path transfer function and a second preset feedback path transfer function. If the difference between the first preset feedback path transfer function and the feedback path transfer function is greater than the difference between the second preset feedback path transfer function and the feedback path transfer function, the second preset feedback path transfer function may be determined as the final preset feedback path transfer function.

[0120] In procedure 960, the signal processing unit may determine the state of the bone conduction hearing device based on the comparison result. Procedure 960 may be executed by the signal processing module (1040).

[0121] In some embodiments, the comparison result may indicate whether the feedback path transfer function is normal or abnormal. In some embodiments, if the feedback path transfer function is normal, the state of the bone conduction hearing device may be determined to be normal, and if the feedback path transfer function is abnormal, the state of the bone conduction hearing device may be determined to be abnormal. In some embodiments, the state of the bone conduction hearing device may include a normal state and an abnormal state. The abnormal state may include one or more of a mis-wearing state, an abnormal structural state, a foreign object intrusion state, and a foreign object blocking state. The wearing state means that the bone conduction hearing device is worn on the user's body. The non-wearing state means that the bone conduction hearing device is not worn on the user's body. The normal structural state means that the structures and / or components of the bone conduction hearing device are in a normal operating state, and thus the bone conduction hearing device can be used normally. The above abnormal structural state may be the opposite of the above normal structural state and means that the structure and / or components of the bone conduction hearing device may be in an abnormal operating state (e.g., the components of the bone conduction hearing device have misalignment, displacement, or damage due to collision). The above foreign matter intrusion state may mean that material other than the structure and / or components of the bone conduction hearing device enters the bone conduction hearing device. In some embodiments, the above normal structural state may be classified as a normal state, and the above abnormal structural state and the above foreign matter intrusion state may be classified as abnormal states. In some embodiments, the comparison result may reflect the wearing state of the bone conduction hearing device, such as a wearing state and a non-wearing state.

[0122] In some embodiments, the feedback path transfer functions of the bone conduction hearing device in a normal state (e.g., a normal structural state) and in the abnormal state may be determined by the method of FIG. 2 and stored in the database (130) as preset feedback path transfer functions. In some embodiments, the feedback path transfer function corresponding to the bone conduction hearing device in the abnormal state (e.g., a foreign body intrusion state) may be used as the abnormal feedback path transfer function in the at least one preset feedback path transfer function, and the feedback path transfer function corresponding to the bone conduction hearing device in the normal state (e.g., the normal structural state) may be used as the standard feedback path transfer function. In some embodiments, a plurality of preset feedback path transfer functions may be stored in the database (130), and each preset feedback path transfer function may correspond to a state of the bone conduction hearing device (normal state, the abnormal state). According to procedures 950 and 960, by comparing the current feedback path transfer function of the bone conduction hearing device with at least one preset feedback path transfer function in the database (130), the preset feedback path transfer function in the database (130) that is closest to the current feedback path transfer function of the bone conduction hearing device can be matched. Then, the state of the bone conduction hearing device corresponding to the matched preset feedback path transfer function may be the current state of the bone conduction hearing device. Thus, according to the above-described processing, the current state of the bone conduction hearing device can be determined in real time.

[0123] In some embodiments, the comparison result may be used to identify different types of the at least one preset feedback path transfer function and thus determine different states of the bone conduction hearing device. In some embodiments, the type of the at least one preset feedback path transfer function may include a standard feedback path transfer function and an abnormal feedback path transfer function. The abnormal feedback path transfer function may include one or more of a misfit feedback path transfer function, an abnormal structural feedback path transfer function, a foreign body intrusion feedback path transfer function, and a foreign body blocking feedback path transfer function. Based on the difference or ratio regarding the feedback path transfer function and the types of one or more preset feedback path transfer functions that are within the preset threshold range, the type of the feedback path transfer function is determined, and then the state of the bone conduction hearing device is determined. For example, if it is determined that the type of the preset feedback path transfer function corresponds to the contact state (i.e., the bone conduction hearing device is in contact with the user), the type of the feedback path transfer function may correspond to the contact state, which may indicate that the bone conduction hearing device is in contact with the user. As another example, if it is determined that the type of the preset feedback path transfer function corresponds to a contact-release state, the type of the feedback path transfer function may indicate that the contact is released. Correspondingly, it may indicate that the bone conduction hearing device is not in contact with the user. As another example, different preset feedback path transfer functions may correspond to different parts of the head worn by the bone conduction hearing device. If the type of the preset feedback path transfer function is determined to correspond to a specific part of the head (e.g., mastoid process, temporal bone, or the pressure bone), the type of the feedback path transfer function may also correspond to the head part. Correspondingly, this may indicate the location where the bone conduction hearing device is worn on the user's head (e.g., mastoid process, temporal bone, or pressure bone).

[0124] In some embodiments, after determining the state of the bone conduction hearing device, the signal processing module (1040) may adaptively adjust one or more parameters of the bone conduction hearing device. In some embodiments, after determining the state of the bone conduction hearing device, the signal processing module (1040) may transmit reminder information indicating the determined state to the user. In some embodiments, if the state of the bone conduction hearing device is abnormal, the user may receive a reminder to adjust the state of the bone conduction hearing device. In some embodiments, methods of giving the reminder to the user may include, but are not limited to, voice presentation, indicator light presentation, vibration presentation, text presentation, remote message, etc. In particular, voice presentation such as "foreign object has entered the device" may be transmitted by the bone conduction hearing device. The bone conduction hearing device may be equipped with a presentation light. When the bone conduction hearing device is in the normal state, the presentation light may display a green light, and when the bone conduction hearing device is in an abnormal state, the presentation light may display a red light to provide a reminder to the user. When the state of the bone conduction hearing device is abnormal, the bone conduction hearing device may generate vibrations; for example, vibrating three times may indicate that the bone conduction hearing device has an abnormal structure, and continuous vibration may indicate the intrusion of foreign matter. The text presentation may mean a text message displayed by the bone conduction hearing device or terminal that communicates with and / or is connected to the bone conduction hearing device to provide a reminder to the user, for example, "foreign matter has intruded into the device" and "the device has an abnormal structure."

[0125] It should be noted that the description is provided for illustrative purposes only and does not limit the scope of the disclosure. To those skilled in the art, many changes and modifications may be made under the presentation of the content of the disclosure. The features, structures, methods, and other features of the exemplary embodiments described herein may be combined in various ways to obtain additional and / or other exemplary embodiments. For example, there may be multiple states of the bone conduction hearing device, but the states belonging to the normal state and the states belonging to the abnormal state may be set by the operator based on experience, by the user, or by the signal processing module (1040). However, such changes and modifications do not depart from the scope of the disclosure.

[0126] FIG. 10 is an exemplary block diagram of a system for testing the condition of a bone conduction hearing device according to some embodiments of the present disclosure. The testing system (1000) of the bone conduction hearing device may be simply referred to as the system (1000). As shown in FIG. 10, in some embodiments, the system (1000) may include a sound generation module (1010), a feedback signal generation module (1020), a feedback analysis module (1030), and a signal processing module (1040).

[0127] The sound generation module (1010) may be configured to generate the third sound based on the first signal. The first signal may be generated by the signal processing unit. In some embodiments, the sound generation module (1010) may be the bone conduction speaker or a part of the bone conduction speaker. For more information regarding generating the third sound based on the first signal, please refer to the detailed description of FIG. 9, which is not duplicated herein.

[0128] The feedback signal generation module (1020) may be configured to receive the third sound and generate a feedback signal. In some embodiments, the feedback signal generation module (1020) may be a microphone or a part of a microphone, or any acoustic-electric sensor or vibration sensor. For more information regarding the generation of the feedback signal, please refer to the detailed description of FIG. 9, which is not duplicated herein.

[0129] The feedback analysis module (1030) may be configured to determine the feedback path transfer function from the speaker of the bone conduction hearing device to the microphone based on the feedback signal and the first signal. The feedback analysis module (1030) may also be configured to obtain at least one preset feedback path transfer function. Furthermore, the feedback analysis module (1030) may be configured to compare the feedback path transfer function with the at least one preset feedback path transfer function. For more information regarding the determination of the feedback path transfer function, compare the feedback path transfer function with the at least one preset feedback path transfer function, and refer to the detailed description of FIG. 9, which is not duplicated herein.

[0130] The signal processing module (1040) may be configured to determine the state of the bone conduction hearing device based on the comparison result. For more information regarding the state of the bone conduction hearing device, please refer to the detailed description in FIG. 9, which is not duplicated here.

[0131] In some embodiments of the present disclosure, a computer-readable storage medium may be provided. The storage medium stores computer instructions. When a computer reads computer instructions in the storage medium, the computer generates the third sound based on a first signal, which may be a test signal generated by the computer; receives the third sound and generates a feedback signal; determines a feedback path transfer function from the speaker of the bone conduction hearing device to the microphone based on the feedback signal and the first signal; obtains at least one preset feedback path transfer function; compares the feedback path transfer function with at least one preset feedback path transfer function; and determines the state of the bone conduction hearing device based on the result of the comparison.

[0132] It should be noted that the description of the above system and its devices / modules is for convenience of explanation only and does not limit the scope of the attached embodiments. Those skilled in the art should understand that, after understanding the principles of the above system, various combinations of devices / modules can be created or subsystems can be configured and connected to other devices / modules without departing from those principles. For example, the feedback analysis module (1030) and the signal processing module (1040) disclosed in FIG. 10 may be different modules of a single device (e.g., the processor (140)), or a single module may implement the functions of two or more of the modules described above. For example, the feedback analysis module (1030) and the signal processing module (1040) may be two modules, or a single module that simultaneously possesses signal analysis and processing functions. As another example, each module may have its own storage module. As another example, each module may share a single storage module. Such modifications are within the scope of protection of the present disclosure.

[0133] Possible beneficial effects of the embodiments of the present disclosure include, but are not limited to, the following two: (1) The vibration transfer function of the bone conduction speaker can be measured without using an external device such as an accelerometer, making the test process simpler and more convenient. (2) The current state of the bone conduction hearing device can be detected based on the feedback path transfer function, and a corresponding reminder can be transmitted to the user based on the state of the bone conduction hearing device, so that the user can know or adjust the state of the bone conduction hearing device, thereby improving the user experience. It should be noted that different embodiments produce different beneficial effects. In different embodiments, the possible beneficial effect may be any one or a combination of those described above, or other possible beneficial effects.

[0134] The basic principles have been explained above. Of course, to those skilled in the art, the above detailed description is merely an example and is not a limitation to the present disclosure. Various modifications, improvements, or alterations to the present disclosure are possible to those skilled in the art, even if not specified herein. Such changes, improvements, or modifications are made in accordance with the present disclosure and are within the essence and scope of the preferred embodiments of the present disclosure.

[0135] In addition, specific terms are used to describe the embodiments of the present disclosure. For instance, the terms “one embodiment,” “one embodiment,” and / or “some embodiments” mean that the detailed features, structures, or characteristics described in relation to the embodiments are included in at least one embodiment of the present disclosure. Accordingly, it is emphasized and acknowledged that two or more “one embodiment,” “one embodiment,” or “one modified embodiment” described in different parts of this specification should not all be considered the same embodiment. Furthermore, some features, structures, or characteristics in one or more embodiments of the present disclosure may be appropriately combined.

[0136] Furthermore, the use of processing elements or sequences, numbers and letters, or other designations in this disclosure is not intended to limit the order of the procedures and methods of this disclosure, except as specified in the claims. While this disclosure discusses what are currently considered various useful embodiments of this disclosure through various embodiments, it should be understood that such details are for that purpose only and the appended claims are not limited to the disclosed embodiments. On the contrary, they are intended to encompass modifications and equivalents to those within the gist and scope of the disclosed embodiments. For example, the implementation of the various components described above may be mounted on a hardware device, but may also be implemented as a software-only solution (e.g., installed on an existing server or mobile device).

[0137] Similarly, in the above description of the embodiments of the present disclosure, it should be understood that various features may, in some cases, be included together in one embodiment, drawing, or description thereof to simplify the disclosure and aid in understanding one or more different embodiments. However, this disclosure does not mean that more features are required than those mentioned in each claim. Rather, the claimed subject matter may have fewer features than all the features of the disclosed embodiment.

[0138] Finally, it should be understood that the embodiments described in this disclosure are merely illustrative of the principles of the embodiments of this application. Other modifications may be within the scope of this disclosure. Accordingly, for example, non-limiting alternative forms of the embodiments of this disclosure may be used in accordance with the suggestions provided herein. Therefore, the embodiments of this disclosure are not precisely limited to as shown and described.

Claims

Claim 1 A method for inspecting the state of a bone conduction hearing device, wherein the bone conduction hearing device comprises at least a microphone, a speaker, a feedback analysis unit, and a signal processing unit, and the method comprises: the speaker generating a third sound based on a first signal generated by the signal processing unit; the microphone receiving the third sound and generating a feedback signal; the feedback analysis unit determining a feedback path transfer function from the speaker to the microphone based on the feedback signal and the first signal, and obtaining a plurality of preset feedback path transfer functions, wherein the plurality of preset feedback path transfer functions include a standard feedback path transfer function and an abnormal feedback path transfer function, wherein the abnormal feedback path transfer function includes a mis-fitting feedback path transfer function, an abnormal structure feedback path transfer function, a foreign object intrusion feedback path transfer function, and a foreign object blocking feedback path transfer function, and the state of the bone conduction hearing device includes a normal state and an abnormal state, wherein the abnormal state includes a mis-fitting state, an abnormal structure state, and a foreign object intrusion A method comprising a state and a foreign matter blocking state, and determining at least one preset feedback path transfer function in which the difference from the feedback path transfer function or the ratio regarding the feedback path transfer function is within a preset threshold range, by comparing the feedback path transfer function with the plurality of preset feedback path transfer functions, and determining at least one preset feedback path transfer function in which the difference from the feedback path transfer function or the ratio regarding the feedback path transfer function is within a preset threshold range, wherein if the quantity of the at least one determined preset feedback path transfer function is two or more, the preset feedback path transfer function having the minimum difference is determined as one determined preset feedback path transfer function, and determining the type of the feedback path transfer function based on the type of the determined preset feedback path transfer function; and the signal processing unit determining the state of the bone conduction hearing device based on the type of the feedback path transfer function. Claim 2 delete Claim 3 In claim 1, determining the type of the feedback path transfer function based on the type of the determined preset feedback path transfer function comprises determining that the feedback path transfer function is a normal feedback path transfer function if the type of the determined preset feedback path transfer function is the standard feedback path transfer function; or determining that the feedback path transfer function is the abnormal feedback path transfer function if the type of the determined preset feedback path transfer function is the abnormal feedback path transfer function, and the method comprises determining that the feedback path transfer function is the misfit feedback path transfer function if the type of the determined preset feedback path transfer function is the misfit feedback path transfer function; or determining that the feedback path transfer function is the abnormal structure feedback path transfer function if the type of the determined preset feedback path transfer function is the abnormal structure feedback path transfer function. A method further comprising: determining that the feedback path transfer function is the foreign matter intrusion feedback path transfer function if the type of the determined preset feedback path transfer function is the foreign matter intrusion feedback path transfer function; or determining that the feedback path transfer function is the foreign matter blocking feedback path transfer function if the type of the determined preset feedback path transfer function is the foreign matter blocking feedback path transfer function. Claim 4 delete Claim 5 In paragraph 3, determining the state of the bone conduction hearing device based on the type of the feedback path transfer function comprises determining that the state of the bone conduction hearing device is normal if the feedback path transfer function is the normal feedback path transfer function; or determining that the state of the bone conduction hearing device is abnormal if the feedback path transfer function is the abnormal feedback path transfer function, and the method comprises determining that the bone conduction hearing device is in a state of mis-wearing if the feedback path transfer function is the mis-wearing feedback path transfer function; or determining that the bone conduction hearing device is in a state of abnormal structure if the feedback path transfer function is the abnormal structure feedback path transfer function; or determining that the bone conduction hearing device is in a state of foreign matter intrusion if the feedback path transfer function is the foreign matter intrusion feedback path transfer function. A method further comprising determining an abnormal type of the bone conduction hearing device by determining that the bone conduction hearing device is in a foreign matter blocking state, if the feedback path transfer function is the foreign matter blocking feedback path transfer function. Claim 6 The method of claim 1 further comprises adaptively adjusting one or more parameters of the bone conduction hearing device or transmitting reminder information to a user based on the state of the bone conduction hearing device. Claim 7 delete Claim 8 A system for detecting the state of a bone conduction hearing device, wherein the bone conduction hearing device comprises at least a microphone, a speaker, a feedback analysis unit, and a signal processing unit, and the system comprises: a speaker configured to generate a third sound based on a first signal generated by the signal processing unit; and a microphone configured to receive the third sound and generate a feedback signal. A feedback analysis unit configured to determine a feedback path transfer function from the speaker to the microphone based on the feedback signal and the first signal, obtain a plurality of preset feedback path transfer functions, wherein the plurality of preset feedback path transfer functions include a standard feedback path transfer function and an abnormal feedback path transfer function, wherein the abnormal feedback path transfer function includes a misfit feedback path transfer function, an abnormal structure feedback path transfer function, a foreign object intrusion feedback path transfer function, and a foreign object blocking feedback path transfer function, and to compare the feedback path transfer function with the plurality of preset feedback path transfer functions to determine at least one preset feedback path transfer function in which the difference from the feedback path transfer function or the ratio regarding the feedback path transfer function is within a preset threshold range, and to determine the type of the feedback path transfer function based on the type of the determined preset feedback path transfer function; and includes a signal processing unit configured to determine the state of the bone conduction hearing device based on the type of the feedback path transfer function, wherein determining at least one preset feedback path transfer function in which the difference from the feedback path transfer function or the ratio regarding the feedback path transfer function is within a preset threshold range includes, if the quantity of the at least one determined preset feedback path transfer function is two or more, determining the preset feedback path transfer function having the minimum difference as one determined preset feedback path transfer function, and the state of the bone conduction hearing device includes a normal state and an abnormal state;The above abnormal state is a system including one or more of a mis-fitting state, an abnormal structural state, a foreign object intrusion state, and a foreign object blocking state.; Claim 9 delete Claim 10 In paragraph 8, determining the type of the feedback path transfer function based on the type of the determined preset feedback path transfer function comprises determining that the feedback path transfer function is a normal feedback path transfer function if the type of the determined preset feedback path transfer function is the standard feedback path transfer function; or determining that the feedback path transfer function is the abnormal feedback path transfer function if the type of the determined preset feedback path transfer function is the abnormal feedback path transfer function; and determining the type of the feedback path transfer function comprises determining that the feedback path transfer function is a mis-wearing feedback path transfer function if the type of the determined preset feedback path transfer function is the mis-wearing feedback path transfer function; or determining that the feedback path transfer function is an abnormal structure feedback path transfer function if the type of the determined preset feedback path transfer function is the abnormal structure feedback path transfer function. A system further comprising: determining that the feedback path transfer function is a foreign matter intrusion feedback path transfer function if the type of the determined preset feedback path transfer function is the foreign matter intrusion feedback path transfer function; or determining that the feedback path transfer function is a foreign matter blocking feedback path transfer function if the type of the determined preset feedback path transfer function is the foreign matter blocking feedback path transfer function. Claim 11 delete Claim 12 In paragraph 10, determining the state of the bone conduction hearing device based on the type of the feedback path transfer function comprises determining that the state of the bone conduction hearing device is normal if the feedback path transfer function is the normal feedback path transfer function; or determining that the state of the bone conduction hearing device is abnormal if the feedback path transfer function is the abnormal feedback path transfer function, and the system determines that the bone conduction hearing device is in a mis-fitting state if the feedback path transfer function is the mis-fitting feedback path transfer function; or determines that the bone conduction hearing device is in an abnormal structural state if the feedback path transfer function is the abnormal structural feedback path transfer function; or determines that the bone conduction hearing device is in a foreign body intrusion state if the feedback path transfer function is the foreign body intrusion feedback path transfer function; or determines that the bone conduction hearing device is in a foreign body blocking state if the feedback path transfer function is the foreign body blocking feedback path transfer function. A system further comprising determining the abnormal type of the bone conduction hearing device through the above. Claim 13 In claim 8, the signal processing unit is configured to adaptively adjust one or more parameters of the bone conduction hearing device or to transmit reminder information to the user based on the state of the bone conduction hearing device. Claim 14 delete Claim 15 As a computer readability storage medium, the storage medium stores computer instructions, and when a computer reads computer instructions within the storage medium, the computer generates a third sound based on a first signal, which is a test signal generated by the computer; Receiving the third sound and generating a feedback signal; determining a feedback path transfer function from the speaker to the microphone of a bone conduction hearing device based on the feedback signal and the first signal; obtaining at least one preset feedback path transfer function, wherein the at least one preset feedback path transfer function includes a standard feedback path transfer function and an abnormal feedback path transfer function, and the abnormal feedback path transfer function includes one or more of a misfit feedback path transfer function, an abnormal structure feedback path transfer function, a foreign body intrusion feedback path transfer function, and a foreign body blockage feedback path transfer function; comparing the feedback path transfer function with the at least one preset feedback path transfer function to determine at least one preset feedback path transfer function in which the difference from the feedback path transfer function or the ratio regarding the feedback path transfer function is within a preset threshold range; determining the type of the feedback path transfer function based on the type of the at least one determined preset feedback path transfer function; and based on the type of the feedback path transfer function, the bone conduction A computer-readable storage medium that instructs determining the state of a hearing device, and determining at least one preset feedback path transfer function in which the difference from the feedback path transfer function or the ratio with respect to the feedback path transfer function is within a preset threshold range, wherein if the quantity of the at least one determined preset feedback path transfer function is two or more, the preset feedback path transfer function having the minimum difference is determined as one determined preset feedback path transfer function, and the state of the bone conduction hearing device includes a normal state and an abnormal state; wherein the abnormal state includes one or more of a mis-fitting state, an abnormal structural state, a foreign object intrusion state, and a foreign object blocking state. Claim 16 delete

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