Method and apparatus for setting and testing hearing aid, and hearing aid

Abstract

The present disclosure relates to a method and apparatus for setting and testing a hearing aid, and a hearing aid. The method for setting the hearing aid comprises: acquiring a first transfer function of a hearing aid (S301); on the basis of an in-ear test signal of the hearing aid currently in an ear and a feedback signal of the in-ear test signal, determining a second transfer function (S302); on the basis of the first transfer function and the second transfer function, determining a state detection result of the hearing aid (S303); and / or on the basis of the first transfer function and the second transfer function, adjusting a signal processing algorithm of the hearing aid (S403).

Description

Method and device for setting and detecting hearing aid, and hearing aid

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure claims the benefit of priority to Chinese Patent Application No. 202311811603.5 filed in the State Intellectual Property Office of China on December 26, 2023, and Chinese Patent Application No. 202311811564.9 filed in the State Intellectual Property Office of China on December 26, 2023. The entire disclosures of these Chinese patent applications are incorporated herein by reference for all purposes. Technical Field

[0003] The present disclosure relates to the field of signal processing technology, and in particular to a method and apparatus for setting and detecting a hearing aid, and a hearing aid. Background Art

[0004] In actual hearing aid use, due to differences in how the hearing aid is worn each time, as well as variations in earwax and humidity in the ear canal, the sound signal emitted by the hearing aid in the eardrum experiences varying attenuation, resulting in the actual sound pressure received by the eardrum being lower than the preset value. Therefore, current hearing aids, when worn, can experience a significant discrepancy between the sound signal received by the eardrum and the sound signal emitted by the hearing aid in the ear canal.

[0005] Furthermore, when hearing aids are used, the receiver is placed inside the ear canal. Over time, or due to corrosion from liquid immersion or external impact, the receiver can deteriorate and become damaged. This can alter the frequency response, causing spectrum drift, affecting the resonant frequency and reducing the hearing aid's gain, leading to receiver failure. Currently, it's impossible to accurately analyze the spectrum of the receiver inside the ear canal, making it impossible to timely detect the hearing aid's status.

[0006] Currently, no effective solution has been proposed to the problem in related technologies that there is a large difference between the sound signal received by the eardrum and the sound signal emitted by the hearing aid in the ear canal, as well as the problem of being unable to detect the status of the hearing aid in a timely manner. Summary of the Invention

[0007] The present disclosure provides a method, device, and hearing aid for setting and detecting a hearing aid, so as to solve the problem in the related art that the sound signal received by the eardrum is significantly different from the sound signal emitted by the hearing aid in the ear canal, or the hearing aid status cannot be detected in time.

[0008] The first aspect of the present disclosure provides a method for setting and detecting a hearing aid. The hearing aid includes a receiver and a target microphone. When the hearing aid is worn by a user, the receiver and the target microphone are located in the ear canal of the user. The method includes: obtaining a first transfer function of the hearing aid; determining a second transfer function of the hearing aid currently in the ear based on an in-ear test signal of the hearing aid currently in the ear and a feedback signal of the in-ear test signal; determining a status detection result of the hearing aid based on the first transfer function and the second transfer function; and / or adjusting the signal processing algorithm of the hearing aid based on the first transfer function and the second transfer function.

[0009] In the first aspect of the present disclosure, the acquiring the first transfer function of the hearing aid includes: obtaining the first transfer function of the hearing aid through acoustic simulation according to structural parameters of the hearing aid.

[0010] In the first aspect of the present disclosure, obtaining the first transfer function of the hearing aid includes: determining the first transfer function of the hearing aid based on an initial sound pressure signal generated by the hearing aid and a feedback signal of the initial sound pressure signal before the hearing aid is inserted into the ear.

[0011] In the first aspect of the present disclosure, obtaining the first transfer function of the hearing aid includes: when the hearing aid is first inserted into the ear, determining the first transfer function of the hearing aid based on an in-ear test signal emitted by the receiver of the hearing aid and a feedback signal of the in-ear test signal received by the target microphone.

[0012] In the first aspect of the present disclosure, determining the second transfer function based on the in-ear test signal and the feedback signal of the in-ear test signal includes: determining the second transfer function based on the cross-power spectrum between the in-ear test signal and the feedback signal of the in-ear test signal, and the auto-power spectrum of the feedback signal of the in-ear test signal.

[0013] In the first aspect of the present disclosure, determining the second transfer function of the hearing aid currently inserted into the ear based on the in-ear test signal of the hearing aid currently inserted into the ear and the feedback signal of the in-ear test signal includes: when the hearing aid is detected to be inserted into the ear, obtaining the current wearing time of the hearing aid when it is inserted into the ear; and when it is determined that the hearing aid meets a preset status detection condition based on the current wearing time of the hearing aid, determining the second transfer function of the hearing aid currently inserted into the ear based on the in-ear test signal of the hearing aid currently inserted into the ear and the feedback signal of the in-ear test signal.

[0014] In the first aspect of the present disclosure, the method further includes: when the hearing aid is detected to be inserted into the ear, determining whether there is a status detection record for the hearing aid; if so, obtaining the time in the latest status detection record of the hearing aid as the historical detection time; and when it is determined that the time interval between the current wearing time and the historical detection time is greater than a preset interval threshold, determining that the hearing aid meets the preset status detection condition.

[0015] In the first aspect of the present disclosure, determining the status detection result of the hearing aid based on the first transfer function and the second transfer function includes: determining the spectral state of the signal generating component in the hearing aid based on the first transfer function and the second transfer function, and obtaining the status detection result of the hearing aid based on the spectral state.

[0016] In the first aspect of the present disclosure, determining the spectral state of the signal generating component in the hearing aid according to the first transfer function and the second transfer function, and obtaining the status detection result of the hearing aid based on the spectral state, includes: determining the degree of spectral deviation of the receiver of the hearing aid according to the first transfer function and the second transfer function; and determining that the state of the receiver is failure when the degree of spectral deviation is greater than a preset deviation threshold, thereby obtaining the status detection result of the hearing aid.

[0017] In the first aspect of the present disclosure, the method further includes: after obtaining the status detection result of the hearing aid, outputting the status detection result of the hearing aid.

[0018] In the first aspect of the present disclosure, adjusting the signal processing algorithm of the hearing aid based on the first transfer function and the second transfer function includes: subtracting the second transfer function from the first transfer function to obtain an ear canal transfer function; determining the acoustic impedance and frequency response curve of the target ear canal based on the ear canal transfer function; and adjusting the signal processing algorithm of the target hearing aid based on the acoustic impedance and frequency response curve of the target ear canal.

[0019] The second aspect of the present disclosure provides a device for setting and detecting a hearing aid. The hearing aid includes a receiver and a target microphone. When the hearing aid is worn by a user, the receiver and the target microphone are located in the ear canal of the user. The device includes: an acquisition module for acquiring a first transfer function of the hearing aid; a calculation module for determining a second transfer function of the hearing aid currently in the ear based on an in-ear test signal of the hearing aid currently in the ear and a feedback signal of the in-ear test signal; a state determination module for determining a state detection result of the hearing aid based on the first transfer function and the second transfer function; and / or an algorithm adjustment module for adjusting the signal processing algorithm of the hearing aid based on the first transfer function and the second transfer function.

[0020] The third aspect of the present disclosure provides a hearing aid, comprising: a receiver, a target microphone, and a processor; wherein the receiver and the target microphone are both communicatively connected to the processor; the receiver is used to emit an in-ear test signal in the ear canal after being inserted into the ear; the target microphone is used to receive a feedback signal of the in-ear test signal in the ear canal after being inserted into the ear; and the processor is used to execute the method described in the first aspect above.

[0021] In a third aspect of the present disclosure, the target microphone is integrally packaged with the receiver.

[0022] In a third aspect of the present disclosure, the target microphone is arranged on the side of the receiver, the sound collection direction of the target microphone is consistent with the sound emission direction of the receiver, and the target microphone is packaged with the receiver and then connected to the sound tube of the hearing aid. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to better describe and illustrate the embodiments and / or examples of the present disclosure, reference may be made to one or more of the accompanying drawings. The additional details or examples used to describe the accompanying drawings should not be considered to limit the scope of the present disclosure, the presently described embodiments and / or examples, and any of the best modes of the present disclosure currently understood.

[0024] FIG1 is an application scenario diagram of a method for setting a hearing aid according to an embodiment of the present disclosure;

[0025] FIG2 is an application scenario diagram of a method for detecting a hearing aid according to another embodiment of the present disclosure;

[0026] FIG3 is a flow chart of a method for setting and detecting a hearing aid according to an embodiment of the present disclosure;

[0027] FIG4 is a flowchart of a method for setting and detecting a hearing aid according to another embodiment of the present disclosure;

[0028] FIG5 is a flowchart of a first transfer function calculation method according to an embodiment of the present disclosure;

[0029] FIG6 is a flow chart of a method for detecting receiver failure according to an embodiment of the present disclosure;

[0030] FIG7 is a flowchart of a method for setting a hearing aid according to an embodiment of the present disclosure;

[0031] FIG8 is a structural block diagram of an apparatus for setting and detecting a hearing aid according to an embodiment of the present disclosure;

[0032] FIG9 is a flowchart of a method for setting a hearing aid according to another embodiment of the present disclosure;

[0033] FIG10 is a schematic structural diagram of a hearing aid according to an embodiment of the present disclosure;

[0034] FIG11 is a schematic diagram of signal transmission of a hearing aid according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0035] In order to more clearly understand the purpose, technical solutions and advantages of the present disclosure, the present disclosure is described and illustrated below in conjunction with the accompanying drawings and embodiments.

[0036] Unless otherwise defined, the technical terms or scientific terms involved in the present disclosure shall have the general meaning understood by people with ordinary skills in the technical field to which the present disclosure belongs. In the present disclosure, "one", "a", "the", "these" and similar words do not represent quantitative restrictions, and they can be singular or plural. The terms "include", "comprise", "have" and any variants thereof involved in the present disclosure are intended to cover non-exclusive inclusion; for example, a process, method and system, product or device comprising a series of steps or modules (units) is not limited to the listed steps or modules (units), but may include unlisted steps or modules (units), or may include other steps or modules (units) inherent to these processes, methods, products or devices. The words "connect", "connected", "coupled" and similar words involved in the present disclosure are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The "plurality" involved in the present disclosure refers to two or more. "And / or" describes the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Generally, the character " / " indicates that the objects are in an "or" relationship. The terms "first," "second," "third," etc. used in this disclosure are only used to distinguish similar objects and do not represent a specific ordering of the objects.

[0037] FIG1 is an aspect of the present disclosure, and a method for setting a hearing aid provided by the present invention can be applied to an application scenario diagram as shown in FIG1 . As shown in FIG1 , the hearing aid includes a receiver 101, a target microphone 102, a first external ear microphone 103, a second external ear microphone 104, and a processor 105. When the hearing aid is in use, that is, when the hearing aid is worn by the user, the receiver 101 and the target microphone 102 are both arranged in the ear canal 106 of the user. In FIG1 , the black arrows marked in the ear canal 106 show the propagation path of the sound signal. Thus, after the receiver 101 emits a sound signal, the sound signal can be transmitted back to the target microphone 102 through the incident-reflection path formed by the ear canal 106 and the eardrum 107, and the target microphone 102 receives a feedback signal of the sound signal. Based on this, the processor 105 can determine the second transfer function based on the in-ear test signal emitted by the receiver 101 in the ear canal 106 and the feedback signal of the in-ear test signal received by the target microphone 102 in the ear canal 106, and then determine the ear canal transfer function of the ear canal 106 in combination with the first transfer function preset between the receiver 101 and the target microphone 102, and then adjust the signal processing algorithm of the hearing aid based on the ear canal transfer function.

[0038] FIG2 is an application scenario diagram of a method for detecting a hearing aid according to another aspect of the present disclosure. As shown in FIG2 , the hearing aid includes a receiver 201, a target microphone 202, an external microphone 203, a processor 204, a Bluetooth module 205, and an application module 206. The processor 204 includes a feedback signal analysis unit and an application control unit. The application control unit can send a first control signal CNT1 to the feedback signal analysis unit and a second control signal CNT2 to the Bluetooth module 102. The Bluetooth module 205 can send a third control signal CNT3 to the application module 206. When the hearing aid is in use, the receiver 201 and the target microphone 202 are both located within the ear canal 207. In FIG2 , the black arrows within the ear canal 207 illustrate the propagation path of the sound signal. Thus, after the receiver 201 emits a sound signal, the target microphone 202 can transmit the sound signal back through the incident reflection path of the ear canal 207 and receive the corresponding feedback signal. Based on this, processor 204 can determine the second transfer function of the hearing aid when the hearing aid is currently in the ear based on the in-ear test signal emitted by receiver 201 in ear canal 207 and the feedback signal of the in-ear test signal received by target microphone 202 in ear canal 207. This second transfer function is then combined with the pre-measured first transfer function between receiver 201 and target microphone 202 to determine the receiver failure detection result. FIG2 shows two extra-ear microphones. Those skilled in the art may also configure different numbers of extra-ear microphones and target microphones based on actual application scenarios. This embodiment does not specifically limit the number of extra-ear microphones and target microphones.

[0039] In this embodiment, a method for setting and detecting a hearing aid is provided. FIG3 is a flow chart of the method for setting and detecting a hearing aid in this embodiment. As shown in FIG3 , the flow chart includes steps S301 to S303 .

[0040] In step S301 , a first transfer function of a hearing aid is obtained.

[0041] In one possible implementation, the first transfer function may be the signal transfer function between a signal generating component and a corresponding signal receiving component within the hearing aid. This first transfer function is determined after the mechanical structure of the hearing aid is fixed. For example, in a hearing aid, the receiver is a basic component of the hearing aid. After the mechanical structure of the hearing aid is fixed, a fixed transfer function exists between the receiver and the target microphone. This fixed transfer function is the first transfer function. The first transfer function represents the relationship between the sound signal emitted by the receiver and the sound signal received by the target microphone when the sound signal emitted by the receiver is directly transmitted to the target microphone. The target microphone may be a side-port silicon microphone, a condenser microphone, or any other microphone suitable for in-ear use. The receiver may be a moving-arm receiver, a micro-electromechanical system (MEMS) receiver, or any other receiver suitable for use in a hearing aid. In another possible implementation, the first transfer function may be determined when the hearing aid is first inserted into the ear and stored in the hearing aid's internal memory. By determining a first transfer function that characterizes the coupling characteristics of the ear canal when the hearing aid is first inserted into the ear under normal use, accurate data reference can be provided for subsequent receiver failure analysis. For example, when the receiver and the target microphone are first inserted into the ear, the receiver emits a weak swept-frequency sound signal r1. This swept-frequency sound signal r1 is the in-ear test signal for the first insertion, i.e., the first insertion test signal. After reflection from the ear canal and eardrum, it is transmitted to the target microphone. The signal received by the target microphone is r2, i.e., the feedback signal of the first insertion test signal. The first transfer function is calculated based on the cross-power spectrum between r1 and r2, and the auto-power spectrum of r2. The swept-frequency sound signal r1 can be the same as or different from the in-ear test signal used to calculate the second transfer function. In this embodiment, the first transfer function can be a previously measured transfer function after the hearing aid is inserted into the ear. For example, when the hearing aid is first inserted into the ear, it is calculated based on the in-ear test signal and the feedback signal of the in-ear test signal. Alternatively, the transfer function measured when the hearing aid is in place and not experiencing spectrum shift can be used as the first transfer function. This first transfer function represents the relationship between the sound signal emitted by the receiver and the sound signal received by the target microphone when the sound signal is reflected by the eardrum and ear canal and then transmitted to the target microphone.

[0042] In step S302, a second transfer function is determined based on the in-ear test signal currently inserted into the hearing aid and a feedback signal of the in-ear test signal.

[0043] This embodiment builds upon the basic structure of a hearing aid provided in the related art by adding an in-ear microphone, the aforementioned target microphone, to form the hearing aid of this embodiment. In actual use, after a receiver in the ear canal emits a sound signal, the target microphone, also located in the ear canal, receives the sound signal through two pathways. One pathway is directly transmitted from the receiver to the target microphone, while the other pathway is formed by incident and reflection through the ear canal and eardrum. To optimize the hearing aid's sound processing algorithm for different ear canal conditions, this embodiment determines a second transfer function by transmitting a multi-directional in-ear test signal in the ear canal and receiving feedback signals of the in-ear test signal received by the target microphone in the ear canal after the receiver and target microphone are inserted into the ear. This second transfer function characterizes the relationship between the in-ear test signal emitted by the receiver and the feedback signal of the in-ear test signal received by the target microphone when the in-ear test signal is reflected from the ear canal and eardrum to the target microphone. The in-ear test signal can be a weak swept-frequency sound signal or white noise. For example, a pure tone signal with a frequency of 50 Hz to 10 Hz and an amplitude less than 20 decibels. Specifically, the second transfer function can be determined based on the in-ear test signal and the power spectrum of the feedback signal of the in-ear test signal.

[0044] In step S303, a status detection result of the hearing aid is determined according to the first transfer function and the second transfer function.

[0045] The first transfer function of step S301 can be obtained in advance, for example, by actual measurement or simulation before the hearing aid leaves the factory, or calculated when the hearing aid is first used, and this fixed first transfer function is stored in the hearing aid's internal memory. When the hearing aid is inserted into the ear, a second transfer function can be calculated based on step S302, and the first transfer function can be read from the internal memory. The first transfer function and the second transfer function can be combined to determine the ear canal transfer function of the ear canal. Furthermore, the hearing aid status detection result can be determined based on this ear canal transfer function. Specifically, the ear canal transfer function of the ear canal can be determined by taking the difference between the first transfer function and the second transfer function.

[0046] Hearing aid status detection can specifically include detecting failure of a signal-generating component within the hearing aid, such as a receiver. During use, a receiver can be susceptible to external factors, leading to failure. In this case, the receiver's frequency response gradually changes as the failure progresses. Therefore, a frequency response curve is determined based on the first and second transfer functions, and analyzed to determine receiver failure.

[0047] After obtaining the hearing aid status detection result, the corresponding status detection result can be output. For example, if the receiver is determined to be faulty, the user can be notified of the failure through an application associated with the hearing aid. If the receiver is determined to be valid but a spectrum shift has occurred, the parameters of the sound processing algorithm can be adjusted for algorithm optimization based on the difference between the first and second transfer functions.

[0048] According to the method provided in this embodiment, a first transfer function of a hearing aid can be obtained; a second transfer function of the hearing aid currently in the ear can be determined based on the in-ear test signal currently in the hearing aid and the feedback signal of the in-ear test signal; and a hearing aid status detection result can be determined based on the first transfer function and the second transfer function. Based on the accurate calculation of the in-ear transfer function of the hearing aid, the hearing aid status can be detected in a timely manner. Another method for setting up and testing a hearing aid is provided in this embodiment. Figure 4 is a flowchart of the method for setting up and testing a hearing aid in this embodiment. As shown in Figure 4, the process includes steps S401 to S403.

[0049] In step S401 , a first transfer function of a hearing aid is obtained.

[0050] In step S402, a second transfer function is determined based on the in-ear test signal currently inserted into the hearing aid and a feedback signal of the in-ear test signal.

[0051] In step S403, the signal processing algorithm of the hearing aid is adjusted according to the first transfer function and the second transfer function.

[0052] First, based on the first transfer function and the second transfer function, the two transfer functions can be combined to determine the ear canal transfer function of the ear canal; after determining the ear canal transfer function, the ear canal transfer function can be used as the input of the signal processing algorithm in the hearing aid, and during the training process of the model adopted by the signal processing algorithm, the training parameters can be adjusted and optimized to achieve the tuning of the signal processing algorithm. The above-mentioned signal processing algorithm is any algorithm built into the hearing aid for processing sound signals. For example, the parameters used by the feedback suppression algorithm, noise reduction algorithm and other algorithms built into the hearing aid can be adjusted according to the ear canal transfer function, or an additional link for gain compensation can be applied based on the ear canal transfer function on the basis of the various processing algorithms built into the hearing aid. It should be noted that this embodiment does not specifically limit the specific signal processing algorithm.

[0053] According to the method provided in this embodiment, a first transfer function of the hearing aid can be obtained; a second transfer function of the hearing aid can be determined based on the in-ear test signal currently inserted into the hearing aid and the feedback signal of the in-ear test signal; and the hearing aid's signal processing algorithm can be adjusted based on the first and second transfer functions. This achieves accurate calculation of the ear canal transfer function, thereby optimizing and compensating the hearing aid's signal processing algorithm. This results in a smaller deviation in the absolute sound pressure level of the sound signal received at the eardrum after attenuation in the ear canal, making it less susceptible to the effects of wearing the hearing aid.

[0054] In an exemplary embodiment, step S301 and / or step S401 may include: obtaining a first transfer function of the hearing aid through acoustic simulation according to structural parameters of the hearing aid.

[0055] Specifically, based on the structural parameters of the receiver and target microphone provided in the hearing aid, an acoustic simulation can be used to determine a fixed direct transfer function between the receiver and the target microphone, i.e., the aforementioned first transfer function. These structural parameters may include the cross-section and depth of the target microphone's sound hole, the cross-section and depth of the receiver's sound outlet, the distance between the target microphone's sound hole and the receiver's sound outlet, and the length of the cavity shared by the target microphone and the receiver. The determination of this first transfer function can be completed before the hearing aid leaves the factory, and the first transfer function can be pre-stored in the hearing aid's internal memory. In this embodiment, by determining the first transfer function that characterizes the direct signal transmission state within the hearing aid, an accurate data reference can be provided for the subsequent calculation of the ear canal transfer function.

[0056] Additionally, in another exemplary embodiment, step S301 and / or step S401 may include: determining a first transfer function of the hearing aid based on an initial sound pressure signal emitted by a receiver of the hearing aid and a feedback signal of the initial sound pressure signal received by a target microphone before the hearing aid is inserted into the ear.

[0057] For example, before the receiver and the target microphone are inserted into the ear, the receiver can emit a multi-directional frequency sweep signal r1. This multi-directional frequency sweep signal r1 is the initial sound pressure signal, which is directly transmitted to the target microphone. The signal received by the target microphone is r2, which is the feedback signal of the initial sound pressure signal. Based on the correlation coefficient between r1 and r2, the frame with the first peak point is extracted as the direct transmission path signal reception frame, and the first transfer function is calculated based on this. This multi-directional frequency sweep signal r1 can be the same as or different from the in-ear test signal.

[0058] Specifically, the initial sound pressure signal emitted by the receiver is p 1r (ω), the feedback signal of the initial sound pressure signal collected at the target microphone is p 1m(ω). First calculate the frame p where the first peak point is located. 1r (ω) and p 1m The cross power spectrum P of (ω) 1mr (ω), and p 1m The autopower spectrum P of (ω) 1m (ω). Where:

[0059] The first transfer function H1(ω) is calculated based on the cross power spectrum and auto power spectrum:

[0060] This embodiment uses actual measurement to achieve accurate calculation of the first transfer function based on the initial sound pressure signal and the power spectrum information of the initial sound pressure, thereby providing accurate data reference for subsequent determination of the ear canal transfer function.

[0061] Furthermore, in yet another exemplary embodiment, step S301 and / or step S401 may include:

[0062] When the hearing aid is first inserted into the ear, a first transfer function of the hearing aid is obtained according to an in-ear test signal of the hearing aid and a feedback signal of the in-ear test signal.

[0063] The determination of this first transfer function can be completed when the hearing aid is first inserted into the ear and stored in the hearing aid's internal memory. By determining the first transfer function, which characterizes the coupling characteristics of the hearing aid to the ear canal when first inserted into the ear under normal use, accurate data reference can be provided for subsequent receiver failure analysis.

[0064] For example, when the receiver and the target microphone are first inserted into the ear, the receiver emits a weak swept-frequency sound signal r1. This swept-frequency sound signal r1 is the in-ear test signal for the first insertion, i.e., the first in-ear test signal. After being reflected by the ear canal and eardrum, it is transmitted to the target microphone. At this time, the signal received by the target microphone is r2, which is the feedback signal of the first in-ear test signal. The first transfer function is calculated based on the cross-power spectrum between r1 and r2, and the auto-power spectrum of r2. The swept-frequency sound signal r1 can be the same as or different from the in-ear test signal used in the calculation of the second transfer function.

[0065] Specifically, when the user first wears the hearing aid, after the receiver and the target microphone are inserted into the ear, the first ear test signal emitted by the receiver is reflected by the ear canal and the eardrum and received by the target microphone, and the first transfer function is determined based on the cross power spectrum between the first ear test signal and the feedback signal of the first ear test signal, as well as the auto power spectrum of the feedback signal of the first ear test signal. For example, based on the first ear test signal p 1r(ω) and the feedback signal p of the first ear test signal 1m The cross power spectrum P of (ω) 1mr (ω), and p 1m The autopower spectrum P of (ω) 1m (ω), determine the first transfer function H1(ω). Where:

[0066] This embodiment uses actual measurement to accurately calculate the first transfer function when the hearing aid is first inserted into the ear, thereby providing accurate data reference for subsequent status detection of the hearing aid.

[0067] In an exemplary embodiment, step S302 and / or step S402 may include: determining the second transfer function based on the cross-power spectrum between the in-ear test signal and the feedback signal of the in-ear test signal, and the auto-power spectrum of the feedback signal of the in-ear test signal.

[0068] Specifically, after the user wears the hearing aid, the receiver and the target microphone are located in the user's ear canal. After the in-ear test signal emitted by the receiver is reflected by the ear canal and eardrum and received by the target microphone, the in-ear test signal p is detected by the target microphone. 2r (ω) and the feedback signal p of the in-ear test signal 2m The cross power spectrum P of (ω) 2mr (ω), and p 2m The autopower spectrum P of (ω) 2m (ω), determine the second transfer function H2(ω). Where:

[0069] In another exemplary embodiment, step S302 and / or step S402 may include: when detecting that the hearing aid is inserted into the ear, obtaining the current wearing time of the hearing aid when the hearing aid is inserted into the ear; and when it is determined that the hearing aid meets a preset status detection condition based on the current wearing time of the hearing aid, determining a second transfer function of the hearing aid when the hearing aid is currently inserted into the ear based on an in-ear test signal of the hearing aid and a feedback signal of the in-ear test signal.

[0070] For example, if the time interval between the current wearing time and the most recent historical detection time of the hearing aid status detection is greater than a preset interval threshold, a new status detection can be performed on the hearing aid. Alternatively, based on the current wearing time of the hearing aid, if it is determined that the hearing aid has no status detection record earlier than the current wearing time, a status detection can be performed on the hearing aid. Alternatively, a detection cycle is pre-set, and if the current wearing time of the hearing aid happens to fall within the time range of the detection cycle, a status detection can be performed on the hearing aid. This embodiment determines whether to perform a status detection on the hearing aid based on the current wearing time of the hearing aid, and can achieve timely detection of the status of the hearing aid according to the actual application scenario, and avoid power consumption loss caused by too frequent status detection.

[0071] In particular, in an exemplary embodiment, the above-mentioned method for detecting a hearing aid may further include: when detecting that the hearing aid is inserted into the ear, determining whether there is a status detection record for the hearing aid; if so, obtaining the time in the latest status detection record of the hearing aid as the historical detection time; and when determining that the time interval between the current wearing time and the historical detection time is greater than a preset interval threshold, determining that the hearing aid meets the above-mentioned preset status detection conditions.

[0072] The above-mentioned current wearing time can be determined based on the timing component built into the hearing aid, or an associated electronic device with a timing function. For example, after the user finishes wearing the hearing aid, the hearing aid will be connected to an application installed on a mobile device via a wireless connection method such as Bluetooth. The mobile device can be a mobile phone, a smart bracelet or other device. The application sends the currently read time to the hearing aid as the current wearing time. The hearing aid compares the current wearing time with the time when the hearing aid was last detected. If the time interval is greater than the preset interval threshold, the status of the hearing aid is detected again; otherwise, no detection is performed, and the parameters of the current sound processing algorithm are maintained. Therefore, this embodiment can perform status detection in a timely manner based on the preset interval threshold when the hearing aid is used, thereby being able to determine the status of the hearing aid in a timely manner so that the user can respond to it in a timely manner.

[0073] Furthermore, in an exemplary embodiment, step S303 may include: determining a spectrum state of a signal generating component in the hearing aid according to the first transfer function and the second transfer function, and obtaining a state detection result of the hearing aid based on the spectrum state.

[0074] Among them, according to the first transfer function and the second transfer function, whether the spectrum state of the signal generating component in the hearing aid is spectrum shift, the degree of spectrum shift and other information can be determined, thereby obtaining the status detection result of the hearing aid.

[0075] In an exemplary embodiment, determining the spectral state of a signal generating component in a hearing aid based on a first transfer function and a second transfer function, and obtaining a state detection result of the hearing aid based on the spectral state may include: determining the degree of spectral deviation of a receiver of the hearing aid based on the first transfer function and the second transfer function; and determining that the state of the receiver is failed when the degree of spectral deviation is greater than a preset deviation threshold, thereby obtaining a state detection result of the hearing aid.

[0076] Specifically, the second transfer function is subtracted from the first transfer function to obtain a third transfer function curve. This third transfer function curve is then compared with a preset curve standard. If the curve does not exceed the preset curve standard, the receiver is determined to be intact, but a spectrum shift may exist. If the curve does exceed the preset curve standard, the receiver is determined to be faulty. Thus, this embodiment enables accurate receiver failure detection.

[0077] In an exemplary embodiment, the method for setting and detecting a hearing aid may further include: after obtaining a status detection result of the hearing aid, outputting the status detection result of the hearing aid.

[0078] Based on a predetermined mapping relationship between the prompt method and the status detection result, the user can be notified of the hearing aid status detection result through sound, light, vibration, or other modules provided on the hearing aid. Alternatively, the hearing aid status detection result can be output to the user through an electronic device associated with the hearing aid.

[0079] Next, we'll use the example of detecting a receiver failure to explain how to output hearing aid status detection results. If the receiver is determined to be faulty, the hearing aid's own output module, such as an audio / visual module, can indicate the failure. For example, a preset color indicator light on the hearing aid can continuously illuminate or flash, indicating the failure. Alternatively, a preset frequency vibration can be used to indicate the failure.

[0080] Alternatively, the hearing aid can output a notification indicating receiver failure to an associated mobile device. For example, an application associated with the hearing aid can display a pop-up message on the mobile device notifying the user of receiver failure, or a corresponding notification message can be recorded in a specific recording module within the application for the user to access when the application is accessed. Alternatively, the associated mobile device can notify the user of receiver failure using graphics, audio, or visual notifications. This embodiment, by outputting hearing aid status detection results, can help users promptly confirm the status of their hearing aids, for example, promptly identify any receiver failure issues and take subsequent measures.

[0081] The above aspects of the present disclosure are described and illustrated below through preferred embodiments.

[0082] FIG5 is a flow chart of a first transfer function calculation method according to a preferred embodiment 1. As shown in FIG5 , the first transfer function calculation method includes steps S501 to S504. In step S501, when a user first wears a hearing aid, a multi-directional frequency sweep signal r1 is emitted through the hearing aid receiver when the hearing aid is first inserted into the ear. In step S502, a feedback signal r2 of r1 is obtained through the target microphone. In step S503, a first transfer function is calculated based on r1 and r2. In step S504, the first transfer function is stored in a non-volatile storage unit of the hearing aid.

[0083] The above steps S501 to S504 can achieve accurate calculation of the first transfer function when the user wears the hearing aid for the first time, and can be reused for subsequent analysis of receiver failure.

[0084] FIG6 is a flow chart of a receiver failure detection method according to a preferred embodiment 2. As shown in FIG6 , the receiver failure detection method includes steps S601 to S611. In step S601, the hearing aid reads the current wearing time t1 from an application, wherein the application can be set in a mobile device and associated with the hearing aid; in step S602, the hearing aid compares the current wearing time with the stored time t0 of the latest receiver detection; in step S603, it is determined whether t1-t0 is greater than a preset interval threshold Δt. If so, step S604 is executed; otherwise, step S605 is executed; in step S604, the time of the latest receiver detection is updated to t1 in the internal memory of the hearing aid, and step S606 is executed; in step S605, the parameters of the current sound processing algorithm are maintained; the process ends; in step S60 6, the receiver in the hearing aid emits a multi-directional sweep frequency signal r3 in the ear canal; in step S607, the target microphone in the hearing aid obtains a feedback signal r8 of the multi-directional sweep frequency signal in the ear canal; in step S608, the second transfer function is calculated based on r3 and r4; in step S609, it is determined whether the receiver has failed based on the pre-acquired first transfer function and the above-mentioned second transfer function. If so, step S610 is executed; otherwise, step S611 is executed; in step S610, a pop-up window of the application is used to prompt the user that the receiver has failed; the process ends; in step S611, the parameters of the sound processing algorithm are adjusted based on the first transfer function and the second transfer function to compensate for the sound pressure at each frequency point.

[0085] In the above steps S610 to S611, accurate receiver failure analysis and parameter adjustment of the sound processing algorithm can be achieved by calculating the transfer function of the hearing aid after it is inserted into the ear.

[0086] In an exemplary embodiment, step S403 may include: subtracting the second transfer function from the first transfer function to obtain an ear canal transfer function; determining the acoustic impedance and frequency response curve of the target ear canal based on the ear canal transfer function; and adjusting the signal processing algorithm of the target hearing aid based on the acoustic impedance and frequency response curve of the target ear canal.

[0087] In the method of this embodiment, the accurate ear canal transfer function of the ear canal can be determined for subsequent evaluation of the state of the ear canal. After obtaining the ear canal transfer function, the acoustic impedance and frequency response curve of the ear canal can be determined based on the ear canal transfer function, and then the acoustic impedance and frequency response curve of the ear canal can be used as inputs of the above-mentioned signal processing algorithm to optimize the algorithm parameters, compensate for the sound pressure at each frequency point, achieve ear canal acoustic impedance matching, and thus compensate for the sound pressure level attenuation caused by the ear canal acoustic impedance. For example, the sound pressure lost at each frequency point from the output end of the receiver to the eardrum is calculated through the ear canal transfer function, and the value of the link compensation function corresponding to the algorithm is adjusted accordingly, and the adjusted value is multiplied by the overall link gain of the algorithm.

[0088] The above aspects of the present disclosure are described and illustrated below through preferred embodiments.

[0089] FIG7 is a flowchart of a method for setting a hearing aid according to the preferred embodiment. As shown in FIG7 , the method for setting a hearing aid includes steps S701 to S706 .

[0090] In step S701, the receiver of the hearing aid emits a multi-directional frequency sweep signal r1 in the ear canal; in step S702, the target microphone of the hearing aid obtains a signal r2 in the ear canal; in step S703, a second transfer function is calculated based on r1 and r2; in step S704, an ear canal transfer function of the ear canal is calculated based on the pre-stored first transfer function and the above-mentioned second transfer function; in step S705, the sound pressure reduction at each frequency point from the receiver to the eardrum is estimated based on the ear canal transfer function; in step S706, the sound processing algorithm is adjusted based on the above-mentioned sound pressure reduction at each frequency point to compensate for the sound pressure at each frequency point.

[0091] The above steps S701 to S706 can optimize the sound processing algorithm parameters and achieve ear canal acoustic impedance matching by compensating the sound pressure at each frequency point.

[0092] In another aspect of the present disclosure, a device for configuring and testing a hearing aid is provided. This device is used to implement the aforementioned embodiments and preferred embodiments, and details already described are omitted. The terms "module," "unit," "subunit," etc., used below, may refer to a combination of software and / or hardware that implements a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementation using hardware, or a combination of software and hardware, is also possible and contemplated.

[0093] FIG8 is a block diagram of a device 80 for configuring and detecting a hearing aid according to an embodiment of the present invention. As shown in FIG8 , the device 80 includes an acquisition module 82, a calculation module 84, a state determination module 86, and an algorithm adjustment module 88. The acquisition module 82 is configured to acquire a first transfer function of the hearing aid; the calculation module 84 is configured to determine a second transfer function of the hearing aid according to an in-ear test signal and a feedback signal of the in-ear test signal; the state determination module 86 is configured to determine a state detection result of the hearing aid according to the first transfer function and the second transfer function; and / or the algorithm adjustment module 88 is configured to adjust the signal processing algorithm of the hearing aid according to the first transfer function and the second transfer function.

[0094] It should be noted that the above modules can be functional modules or program modules, and can be implemented through software or hardware. For modules implemented through hardware, the above modules can be located in the same processor; or the above modules can be located in different processors in any combination.

[0095] Another aspect of the present disclosure provides another method for setting a hearing aid. FIG9 is a flowchart of the method for setting a hearing aid according to this embodiment. As shown in FIG9 , the method includes steps S901 to S904 .

[0096] In step S901 , a first transfer function of a hearing aid is obtained.

[0097] The first transfer function represents the relationship between the sound signal emitted by the receiver and the feedback signal of the sound signal received by the target microphone.

[0098] In step S902, a second transfer function of the hearing aid currently inserted into the ear is determined based on the in-ear test signal of the hearing aid currently inserted into the ear and a feedback signal of the in-ear test signal.

[0099] The second transfer function represents the relationship between the in-ear test signal emitted by the receiver and the feedback signal of the in-ear test signal received by the target microphone when the in-ear test signal emitted by the receiver is reflected to the target microphone via the ear canal and the eardrum.

[0100] In step S903, a state detection result of the hearing aid is determined according to the first transfer function and the second transfer function.

[0101] First, an ear canal transfer function of the ear canal can be determined based on the first transfer function and the second transfer function; and further, a status detection result of the hearing aid can be determined based on the ear canal transfer function.

[0102] In step S904, the signal processing algorithm of the hearing aid is adjusted according to the status detection result.

[0103] Hearing aid status detection can specifically include detecting failure of a signal-generating component within the hearing aid, such as a receiver. During use, a receiver can be susceptible to external factors, leading to failure. In this case, the receiver's frequency response gradually changes as the failure progresses. Therefore, a frequency response curve is determined based on the first and second transfer functions, and analyzed to determine receiver failure.

[0104] After obtaining the hearing aid status detection result, the corresponding status detection result can be output. For example, if the receiver is determined to be faulty, the user can be notified of the failure through an application associated with the hearing aid. If the receiver is determined to be intact but a spectrum shift has occurred, the parameters of the hearing aid's signal processing algorithm can be adjusted based on the difference between the first and second transfer functions to perform algorithm tuning.

[0105] According to the method provided in this embodiment, a first transfer function of the hearing aid can be obtained; a second transfer function of the hearing aid currently in the ear can be determined based on the in-ear test signal of the hearing aid and the feedback signal of the in-ear test signal; and a state detection result of the hearing aid can be determined based on the first transfer function and the second transfer function. Based on the accurate calculation of the transfer function of the hearing aid in the ear, the hearing aid state can be detected in a timely manner. Furthermore, the signal processing algorithm of the hearing aid can be adjusted based on the first transfer function and the second transfer function. This achieves accurate calculation of the ear canal transfer function, thereby optimizing and compensating the signal processing algorithm of the hearing aid. As a result, the absolute sound pressure level deviation of the sound signal received at the eardrum after attenuation in the ear canal is smaller and less susceptible to the influence of wearing, etc.

[0106] This embodiment also provides a hearing aid 100. FIG10 is a schematic structural diagram of the hearing aid 100 of this embodiment. As shown in FIG10 , the hearing aid 100 includes: a receiver 101, a target microphone 102, and a processor 103. The receiver 101 and the target microphone 102 are both communicatively connected to the processor 103. The receiver 101 is configured to emit an in-ear test signal in the ear canal after insertion into the ear. The target microphone 102 is configured to receive a feedback signal of the in-ear test signal in the ear canal after insertion into the ear. The processor 103 is configured to execute the method for configuring a hearing aid provided in any of the above embodiments.

[0107] The receiver 101 can be a dynamic armature receiver or a MEMS receiver; the target microphone 102 can be a side-ported silicon microphone or a condenser microphone. The target microphone 102 can be attached to the receiver 101, for example, to the side of the receiver 101 or within a predetermined proximity. When the user wears the hearing aid 100, both the receiver 101 and the target microphone 102 are located in the user's ear canal.

[0108] As shown in FIG10 , the hearing aid 100 may also include an external microphone 104. When in use, the external microphone 104 is located outside the user's ear and is used to collect external sound signals and transmit them to the receiver 101. FIG10 shows two external microphones 104. Those skilled in the art will appreciate that a different number of external microphones 104 may be provided based on actual application scenarios. The number of external microphones 104 is not limited in this embodiment. Furthermore, the hearing aid 100 includes a backend circuit module 105. This backend circuit module 105 processes the signals output by the external microphones 104 and transmits them to a feedback signal analysis unit within the processor 103. The triangles in FIG10 represent amplifiers, and the hyperbolas represent other omitted hearing aid components. The sound signals emitted by the receiver 101 are received by the target microphone 102 and are also transmitted to the feedback signal analysis unit within the processor 103. The feedback signal analysis unit performs a joint analysis of all received signals and outputs the analysis results to the application control unit within the processor 103. The application control unit then issues control instructions to the backend circuit module 105. For example, a control instruction is issued to adjust the sound processing algorithm built into the back-end circuit module 105.

[0109] The receiver 101 can emit a multi-directional sweep frequency signal or white noise each time it is inserted into the ear, and then receive feedback signals from different directions through the target microphone 102 to obtain a second transfer function. The second transfer function is subtracted from the first transfer function from the receiver 101 to the target microphone 102 built into the hearing aid 100 to obtain the current ear canal transfer function of the ear canal. The parameters of the sound processing algorithm are then initialized and optimized based on the ear canal transfer function.

[0110] The hearing aid 100 described above achieves accurate calculation of the ear canal transfer function, thereby optimizing and compensating the signal processing algorithm, thereby reducing the difference between the sound signal received by the eardrum and the sound signal emitted by the hearing aid 100 in the ear canal.

[0111] In an exemplary embodiment, the target microphone 102 is integrally packaged with the receiver 101 .

[0112] Furthermore, in an exemplary embodiment, the target microphone 102 is disposed on the side of the receiver 101. The sound collection direction of the target microphone 102 is aligned with the sound emission direction of the receiver 101. The target microphone 102 is packaged with the receiver 101 and then connected to the sound tube of the hearing aid 100. By aligning the sound collection direction of the target microphone 102 with the sound emission direction of the receiver 101, the target microphone 102 can accurately receive the sound signal from the receiver 101.

[0113] FIG11 is a schematic diagram of signal transmission of a hearing aid according to the present embodiment. As shown in FIG11 , the external microphone 104 transmits the signal to the feedback signal analysis unit. The feedback signal analysis unit sends the analysis result of the signal to the application control unit. The application control unit sends a first control instruction CNT1 to the feedback signal analysis unit and a second control instruction CNT2 to the algorithm module. f1(n) is the input signal sent by the feedback signal analysis unit to the receiver 101. In addition, the sound signal emitted by the receiver 101 can be directly transmitted to the target microphone 102 through path 1, or it can be transmitted to the target microphone 102 through the incident-reflection path of the ear canal and eardrum, that is, path 2. The target microphone 102 can send the received sound signal to the application control unit and the algorithm module.

[0114] It should be understood that the specific embodiments described herein are only used to explain this application and are not used to limit it. Based on the embodiments provided by this disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this disclosure.

[0115] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this disclosure are all information and data authorized by the user or fully authorized by all parties.

[0116] Obviously, the accompanying drawings are merely examples or embodiments of the present disclosure. A person skilled in the art can apply the present disclosure to other similar situations based on these drawings without inventive effort. Furthermore, it is understood that while the work involved in this development process may be complex and lengthy, certain design, manufacturing, or production changes based on the technical content disclosed in this disclosure are merely routine technical means for a person skilled in the art and should not be considered to be insufficient disclosure.

[0117] The term "embodiment" as used in this disclosure refers to specific features, structures, or characteristics described in conjunction with the embodiment that can be included in at least one embodiment of the disclosure. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it imply that the embodiments are mutually exclusive and independent or optional. It is understood, either explicitly or implicitly, by those skilled in the art that the embodiments described in this disclosure can be combined with other embodiments when there is no conflict.

[0118] The above-described embodiments merely represent several implementation methods of the present disclosure. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of patent protection. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present disclosure, all of which fall within the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure shall be determined by the appended claims.

Claims

1. A method for setting and detecting a hearing aid, the hearing aid including a receiver and a target microphone, where when the hearing aid is worn by a user, the receiver and the target microphone are located in the user's ear canal, and the method includes: Obtaining a first transfer function of the hearing aid; Determining a second transfer function of the currently inserted hearing aid according to the inserted test signal of the hearing aid and the feedback signal of the inserted test signal; Determining a status detection result of the hearing aid according to the first transfer function and the second transfer function; And / or Adjusting a signal processing algorithm of the hearing aid according to the first transfer function and the second transfer function.

2. The method according to claim 1, wherein The obtaining of the first transfer function of the hearing aid includes: Obtaining the first transfer function of the hearing aid through acoustic simulation according to the structural parameters of the target hearing aid.

3. The method according to claim 1, wherein The obtaining of the first transfer function of the hearing aid includes: Before the hearing aid is inserted into the ear, determining the first transfer function of the hearing aid according to the initial sound pressure signal emitted by the receiver of the hearing aid and the feedback signal of the initial sound pressure signal received by the target microphone.

4. The method according to claim 1, wherein The obtaining of the first transfer function of the hearing aid includes: When the hearing aid is inserted into the ear for the first time, determining the first transfer function of the hearing aid according to the inserted test signal for the first insertion into the ear emitted by the receiver of the hearing aid and the feedback signal of the inserted test signal for the first insertion into the ear received by the target microphone.

5. The method according to any one of claims 1 to 4, characterized in that The determining of the second transfer function according to the inserted test signal and the feedback signal of the inserted test signal includes: Determining the second transfer function according to the cross-power spectrum between the inserted test signal and the feedback signal of the inserted test signal, and the auto-power spectrum of the feedback signal of the inserted test signal.

6. The method according to any one of claims 1 to 4, characterized in that The determining of the second transfer function of the currently inserted hearing aid according to the inserted test signal of the currently inserted hearing aid and the feedback signal of the inserted test signal includes: When it is detected that the hearing aid is inserted into the ear, obtaining the current wearing time of the hearing aid when it is inserted into the ear; When it is determined that the hearing aid meets a preset status detection condition based on the current wearing time of the hearing aid, determining the second transfer function of the currently inserted hearing aid according to the inserted test signal of the currently inserted hearing aid and the feedback signal of the inserted test signal.

7. The method according to claim 6, characterized in that, The method further includes: When it is detected that the hearing aid is inserted into the ear, determining whether there is a status detection record for the hearing aid; if so, obtaining the time in the latest status detection record of the hearing aid as the historical detection time; When it is determined that the time interval between the current wearing time and the historical detection time is greater than a preset interval threshold, determining that the hearing aid meets the preset status detection condition.

8. The method according to claim 1, wherein The determining of the status detection result of the hearing aid according to the first transfer function and the second transfer function includes: Determining the spectral status of the signal generation component in the hearing aid according to the first transfer function and the second transfer function, and obtaining the status detection result of the hearing aid based on the spectral status.

9. The method according to claim 8, characterized in that, Determining a spectral state of a signal generation component in the hearing aid according to the first transfer function and the second transfer function, and obtaining a state detection result of the hearing aid based on the spectral state, includes: Determining a spectral offset degree of the receiver of the hearing aid according to the first transfer function and the second transfer function; When the spectral offset degree is greater than a preset offset threshold, determining that the state of the receiver is invalid, and obtaining the state detection result of the hearing aid.

10. The method according to claim 9, wherein The method further includes: After obtaining the state detection result of the hearing aid, outputting the state detection result of the hearing aid.

11. The method according to claim 1, wherein Adjusting a signal processing algorithm of the hearing aid according to the first transfer function and the second transfer function, includes: Subtracting the second transfer function from the first transfer function to obtain an ear canal transfer function; Determining an acoustic impedance and a frequency response curve of the target ear canal according to the ear canal transfer function; Adjusting the signal processing algorithm of the target hearing aid according to the acoustic impedance and the frequency response curve of the target ear canal.

12. A device for setting and detecting a hearing aid, the hearing aid includes a receiver and a target microphone, when the hearing aid is worn by a user, the receiver and the target microphone are located in the user's ear canal, the device includes: An acquisition module, configured to acquire a first transfer function of the hearing aid; A calculation module, configured to determine a second transfer function of the currently inserted hearing aid according to the currently inserted into-ear test signal of the hearing aid and a feedback signal of the into-ear test signal; A state determination module, configured to determine a state detection result of the hearing aid according to the first transfer function and the second transfer function; And / or An algorithm adjustment module, configured to adjust a signal processing algorithm of the hearing aid according to the first transfer function and the second transfer function.

13. A hearing aid, comprising: A receiver, a target microphone and a processor; wherein, the receiver and the target microphone are both communicatively connected to the processor; The receiver is configured to emit an into-ear test signal in the ear canal after being inserted; The target microphone is configured to receive a feedback signal of the into-ear test signal in the ear canal after being inserted; The processor is configured to execute the method according to any one of claims 1 to 11.

14. The hearing aid according to claim 13, characterized in that, The target microphone and the receiver are integrally encapsulated.

15. The hearing aid according to claim 14, characterized in that, The target microphone is disposed on a side of the receiver, a sound receiving direction of the target microphone is the same as a sound emitting direction of the receiver, and after the target microphone and the receiver are encapsulated, they are connected to a sound tube of the hearing aid.

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