CN217064005U - Hearing device - Google Patents
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- CN217064005U CN217064005U CN202123187242.0U CN202123187242U CN217064005U CN 217064005 U CN217064005 U CN 217064005U CN 202123187242 U CN202123187242 U CN 202123187242U CN 217064005 U CN217064005 U CN 217064005U
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Abstract
The utility model relates to a hearing device. The hearing device comprises a device body, a receiver, an in-ear microphone, an out-of-ear microphone and a signal analysis module; the receiver is used for sending out an audio signal, the audio signal forms an in-ear feedback signal through feedback, and the audio signal forms an acoustic feedback signal through transmission of an acoustic feedback path; the in-ear microphone is arranged at the near end of the equipment body and used for receiving the in-ear feedback signal; the ear microphone is arranged at the far end of the equipment body and used for receiving the acoustic feedback signal; the signal analysis module is connected with the in-ear microphone and the out-of-ear microphone and used for analyzing the in-ear feedback signal and the acoustic feedback signal to obtain an analysis result. The hearing device is provided with an in-ear microphone independent of an out-of-ear microphone, and the obtained analysis result is more accurate compared with the analysis of a signal received only by the out-of-ear microphone.
Description
Technical Field
The utility model relates to an acoustic equipment technical field especially relates to a hearing equipment.
Background
The hearing aid is a small-sized loudspeaker, which enlarges the originally inaudible sound and utilizes the residual hearing of the hearing-impaired person to enable the sound to be transmitted to the auditory center of the brain so as to feel the sound. Bringing great convenience for hearing-impaired people. The earphone is a pair of conversion units which receive the electric signals from the media player or receiver and convert them into audible sound waves by using a speaker near the ear.
However, the conventional techniques do not relate to a function of self-testing a hearing device such as a hearing aid or an earphone.
SUMMERY OF THE UTILITY MODEL
In view of the above, there is a need for a hearing device that addresses the deficiencies in the prior art discussed above.
According to some embodiments, a hearing device is provided, comprising a device body, a receiver, an in-ear microphone, an out-of-ear microphone, and a signal analysis module;
the receiver is used for sending out an audio signal, the audio signal forms an in-ear feedback signal through feedback, and the audio signal forms an acoustic feedback signal through transmission of an acoustic feedback path;
the in-ear microphone is arranged at the near end of the equipment body and used for receiving the in-ear feedback signal;
the ear microphone is arranged at the far end of the equipment body and used for receiving the acoustic feedback signal;
the signal analysis module is connected with the in-ear microphone and the out-of-ear microphone and used for analyzing the in-ear feedback signal and the acoustic feedback signal to obtain an analysis result.
The hearing device provided by the above embodiment is provided with an in-ear microphone independent of an out-of-ear microphone, and an in-ear feedback signal formed by feeding back an audio signal can be received in an ear through the in-ear microphone, so that the signal analysis module can perform joint analysis on the in-ear feedback signal received in the ear and the acoustic feedback signal received by the out-of-ear microphone; because the in-ear microphone is in the ear when the hearing device is worn, and the received in-ear feedback signal is different from the signal that can be received by the out-of-ear microphone, a large amount of information that cannot be acquired by the out-of-ear microphone can be provided for the hearing device to perform joint analysis.
In one embodiment, the audio signal comprises an audio signal with a preset frequency or a frequency sweep signal. In one embodiment, the signal analysis module comprises a processing unit and an analysis unit; wherein
The processing unit is connected with the in-ear microphone and the out-of-ear microphone and is used for digitally processing the in-ear feedback signals acquired by the in-ear microphone to obtain feedback electric signals and digitally processing the acoustic feedback signals acquired by the out-of-ear microphone to obtain acoustic feedback electric signals;
the analysis unit is connected with the processing unit and used for analyzing the feedback electric signal and the acoustic feedback electric signal to obtain an analysis result.
In one embodiment, the hearing device further includes an application control module, connected to the signal analysis module, for sending a control application instruction to the back-end circuit according to an analysis result obtained by the signal analysis module.
The hearing device according to the above-mentioned embodiment is capable of controlling an application based on an analysis result of the signal analysis module by the application control module.
In one embodiment, the in-ear microphone is fixed on the side surface of the receiver.
In one embodiment, the in-ear microphone comprises a side-aperture silicon microphone;
the side-opening silicon microphone is fixed on the side face of the telephone receiver, and the direction of the sound hole of the side-opening silicon microphone is consistent with that of the sound hole of the telephone receiver.
In one embodiment, the hearing device further comprises a sound tube, and the in-ear microphone and the receiver are connected with the sound tube;
the in-ear microphone and the telephone receiver are packaged in a packaging structure together, the packaging structure is provided with an opening, and the sound hole of the side-hole silicon microphone and the sound hole of the telephone receiver face the opening.
In one embodiment, the receiver comprises a moving-iron receiver
In one embodiment, the off-ear microphone comprises a first off-ear microphone and a second off-ear microphone;
the first off-ear microphone and the second off-ear microphone are both connected with the signal analysis module.
In one embodiment, a first state probability parameter is used for compensating the audio signal in the feedback process to obtain the in-ear feedback signal;
and compensating the audio signal in the transmission of the acoustic feedback path by adopting a second state probability parameter to obtain the acoustic feedback signal.
In one embodiment, the application control module comprises a controller for issuing said control application instruction to said back-end circuitry.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the description of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the description below are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a hearing instrument according to an embodiment of the present application;
fig. 2 is a schematic circuit diagram of a hearing instrument according to an embodiment of the present application;
fig. 3 is a schematic signal path diagram of a hearing device according to an embodiment of the present application;
fig. 4 is a schematic diagram of a hearing instrument according to an embodiment of the present application.
Description of the reference numerals:
10. an apparatus body; 20. a telephone receiver; 30. an in-ear microphone; 40. an extra-aural microphone; 50. a signal analysis module; 501. a processing unit; 502. an analysis unit; 60. an application control module; 70. an acoustic pipe; 80. and (7) packaging the structure.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Embodiments of the present application are set forth in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
It will be understood that, as used herein, the terms "first," "second," and the like may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, a first off-ear microphone may be referred to as a second off-ear microphone, and similarly, a second off-ear microphone may be referred to as a first off-ear microphone, without departing from the scope of the present application. The first and second off-ear microphones are both off-ear microphones, but they are not the same off-ear microphone.
It is to be understood that "connection" in the following embodiments is to be understood as "electrical connection", "communication connection", and the like if the connected circuits, modules, units, and the like have communication of electrical signals or data with each other.
As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises/comprising," "includes" or "including," or "having," etc., specify the presence of stated features, integers, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, components, parts, or groups thereof. Also, as used in this specification, the term "and/or" includes any and all combinations of the associated listed items.
The acoustic feedback path (also called "feedback path") is a space between an audio signal played from a receiver in the ear and an original external microphone of the hearing device, and since the ear cap is difficult to be completely tightly combined with the ear canal, the audio signal leaks from the gap and is picked up again by the original external microphone of the hearing device to enter the system.
At present, the conventional technology does not relate to a function of self-detection of hearing devices such as hearing aids or earphones.
Based on this, the present application provides, according to some embodiments, a hearing instrument. Referring to fig. 1, the hearing device may include a device body 10, a receiver 20, an in-ear microphone 30, an out-of-ear microphone 40, and a signal analysis module 50.
Specifically, receiver 20 may be configured to emit an audio signal, where the audio signal is fed back to form an in-ear feedback signal, and the audio signal is transmitted through an acoustic feedback path to form an acoustic feedback signal; the in-ear microphone 30 is disposed at the proximal end of the device body 10, and is configured to receive the in-ear feedback signal; the ear microphone 40 is arranged at the far end of the device body 10 and is used for receiving the acoustic feedback signal; the signal analysis module 50 is connected to the in-ear microphone 30 and the out-of-ear microphone 40, and is configured to analyze the in-ear feedback signal and the acoustic feedback signal to obtain an analysis result.
The hearing device provided by the above embodiment is provided with the in-ear microphone 30 independent of the out-of-ear microphone 40, and the in-ear microphone 30 can receive an in-ear feedback signal formed by feeding back an audio signal in the ear, so that the signal analysis module 50 can jointly analyze the in-ear feedback signal received in the ear and the acoustic feedback signal received by the out-of-ear microphone 40; since the in-ear microphone 30 is in the ear when the hearing device is worn, and the received in-ear feedback signal is different from the signal that can be received by the out-of-ear microphone 40, a large amount of information that cannot be obtained by the out-of-ear microphone 40 can be provided for the hearing device to perform joint analysis, and compared with the analysis of the signal that is received only by the out-of-ear microphone 40, the analysis result obtained by the hearing device provided in the above embodiment is more accurate.
The hearing devices referred to in this application may include, but are not limited to, hearing aids, passthrough earphones or other in-ear devices, and the like; optionally, if the hearing device comprises a hearing aid, the device body 10 comprises a hearing aid body; if the hearing device comprises a pass-through earphone, the device body 10 comprises a pass-through earphone body; it should be noted that, no matter the hearing aid body or the transparent earphone body, the shape, length, width, thickness, material, etc. thereof may be implemented in different ways according to the actual application scenario, and are not described in detail in the embodiments of the present application.
It should be noted that, in the present application, the proximal end of the device body 10 may refer to the side of the device body 10 close to the ear canal, and the distal end of the device body 10 may refer to the side of the device body 10 away from the ear canal.
Regarding the signal analysis module 50, it should be noted that the specific implementation manner of the signal analysis module 50 analyzing the in-ear feedback signal and the acoustic feedback signal is not limited in the present application; the implementation manner of analyzing the in-ear feedback signal and the acoustic feedback signal by the signal analysis module 50 can be understood by referring to the prior art, and will not be described in detail herein.
The method and the device have the advantages that the frequency and the amplitude of the audio signal are not specifically limited, and the audio signal can include but is not limited to an audio signal with preset frequency or a sweep frequency signal and the like; in one embodiment, the audio signal has a frequency in the range of 50Hz-10kHz, and/or an amplitude below 20 dB; that is, the audio signal may satisfy the frequency range within 50Hz-10kHz, or satisfy the amplitude below 20dB, or simultaneously satisfy the frequency range within 50Hz-10kHz and the amplitude below 20 dB.
Referring to fig. 2 in conjunction with fig. 1, in one embodiment, the signal analysis module 50 may include a processing unit 501 and an analysis unit 502. The processing unit 501 is connected to the in-ear microphone 30 and the out-of-ear microphone 40, and configured to perform digital processing on an in-ear feedback signal acquired by the in-ear microphone 30 to obtain a feedback electrical signal, and perform digital processing on an acoustic feedback signal acquired by the out-of-ear microphone 40 to obtain an acoustic feedback electrical signal; the analyzing unit 502 is connected to the processing unit 501, and is configured to analyze the feedback electrical signal and the acoustic feedback electrical signal to obtain an analysis result.
Regarding the analysis unit 502, it should be noted that, in the present application, a specific implementation manner of analyzing the in-ear feedback signal and the acoustic feedback signal by the analysis unit 502 is not limited; the implementation manner of analyzing the in-ear feedback signal and the acoustic feedback signal by the analyzing unit 502 can be understood by referring to the prior art, and will not be described in detail herein.
With continued reference to fig. 2, in one embodiment, the hearing device may further comprise an application control module 60, connected to the signal analysis module 50, for sending a control application instruction to the back-end circuit according to the analysis result obtained by the signal analysis module 50.
The hearing instrument provided by the above-described embodiment is capable of controlling the application based on the analysis result of the signal analysis module 50 by the application control module 60.
With respect to the application control module 60, it should be noted that, in the present application, a specific implementation manner in which the application control module 60 sends a control application instruction to the back-end circuit according to an analysis result obtained by the signal analysis module 50 is not limited; the implementation manner of the application control module 60 sending the application control instruction to the back-end circuit according to the analysis result obtained by the signal analysis module 50 can be understood by referring to the prior art, and will not be described herein in detail.
In one embodiment, the signal path during the operation of the hearing device may be as shown in fig. 3, and the receiver 20 emits an audio signal, which passes through the feedback path FPB1 and then adopts the state probability parameter PS 1 (n) compensating the resulting signal to obtain an in-ear feedback signal S 1 (n) and after passing through an acoustic feedback path FPB2, using a state probability parameter PS 2 (n) compensating the resulting signal to obtain an acoustic feedback signal S 2 (n); to the in-ear feedback signal S 1 (n) and an acoustic feedback signal S 2 (n) performing noise reduction processing to obtain a feedback difference signal e 1 (n) and an acoustic feedback difference signal e 2 (n) and feeding back the difference signal e 1 (n) and an acoustic feedback difference signal e 2 (n) as an input signal to the signal analysis module 50; the signal analysis module 50 may comprise a digital signal processor DSP which receives the in-ear feedback signal S 1 (n) and an acoustic feedback signal S 2 (n) and feeding back the signal S to the ear 1 (n) and an acoustic feedback signal S 2 (n) performing an analysis to obtain an analysis result. The application control module 60 may include a controller CONT configured to send a control application instruction to the application layer ALG according to the analysis result; and the hearing instrument in this application may further comprise at least a first filter Filt1, a second filter Filt2 and a third filter Filt3, which may be used to enable an initial optimization configuration based on adaptive algorithm parameters.
Some possible embodiments of the present application will be described in detail below, taking as an example the hearing device implementing an in-ear detection function via the in-ear microphone 30.
In one embodiment, the audio signal emitted by the receiver 20 may include an audio signal of a first preset frequency; the audio signal with the first preset frequency is reflected by the eardrum to form a first in-ear feedback signal; meanwhile, the signal analysis module 50 may comprise an in-ear detection unit, which may be configured to analyze the first in-ear feedback signal to determine whether the hearing device is in the ear.
If the hearing device is placed in the ear, in the hearing device provided in the above embodiment, the audio signal of the first preset frequency sent by the receiver 20 can be reflected by the eardrum to form a first in-ear feedback signal; this in-ear microphone 30 of hearing device can acquire this in-ear feedback signal in the ear for go into ear detecting element and can carry out the analysis to the in-ear feedback signal that in-ear microphone 30 acquireed, judge whether this hearing device goes into the ear, compare in only relying on the in-ear microphone 40 received signal, the hearing device that above-mentioned embodiment provided can collect feedback signal in the ear better, promotes the detection accuracy of going into the ear.
Optionally, the audio signal with the first preset frequency is a weak sound signal; the size of the first preset frequency is related to the geometric shapes and the elastic moduli of the auditory canals and/or the eardrums of different individuals, the average value of the human hearing range can be used as a simulation basis or the basis of other algorithms to be calculated so as to obtain the range of the first preset frequency, and the size of the first preset frequency can be finely adjusted according to each individual difference; in one embodiment, the audio signal at the first predetermined frequency has a frequency range of 50Hz-10kHz and an amplitude of less than 20 dB.
The receiver 20 can send out an audio signal at a first preset frequency in an ear-away state; when the receiver 20 is placed in the ear, the audio signal of the first predetermined frequency can be reflected by the eardrum to form a first in-ear feedback signal. The receiver 20 may continuously send out the audio signal at the first preset frequency, or may send out the audio signal at the first preset frequency at a fixed time and continuously for a preset time period; this is not a limitation of the present application.
The in-ear detection unit analyzes the first in-ear feedback signal, and the specific mode for judging whether the hearing device is in the ear is not limited; in one embodiment, the in-ear detection unit may compare the first in-ear feedback signal with an in-ear feedback signal formed by reflecting the audio signal of the first preset frequency in the out-of-ear state to determine whether the hearing device is in-ear.
In addition, in some possible embodiments, the in-ear detection unit is further capable of determining whether the hearing device is worn accurately according to an energy level of a first in-ear feedback signal received in the ear; for example, when the hearing device is worn correctly, the receiver 20 is placed in the ear, and the energy size interval of a first in-ear feedback signal formed by the audio signal of the first preset frequency being reflected by the eardrum at this time is defined as a standard feedback interval; and if the energy of the first in-ear feedback signal detected by the in-ear detection unit is outside the standard feedback interval in the in-ear detection process, determining that the hearing device is worn incorrectly at the moment.
As mentioned above, if the acoustic feedback path is to be estimated, it is necessary to know the ratio of the audio signal played from the receiver and the signal picked up by the external microphone of the hearing device, which is the transfer function of the feedback path. In the conventional technology, the audio signal played by the receiver is generally estimated by the receiver driving signal, however, a nonlinear relationship exists between the two signals, and the feedback path is long, so that the problem of inaccurate estimation is easily caused, and the feedback suppression effect is influenced.
Some possible embodiments of the present application will be described in detail below, taking as an example the evaluation of the feedback path by the hearing device via the in-ear microphone 30 and the out-of-ear microphone 40.
In one embodiment, the audio signal emitted by the receiver 20 may include an audio signal of a second preset frequency; the audio signal of the second predetermined frequency may be transmitted to the in-ear microphone 30 via the ear canal to generate a second in-ear feedback signal, and the audio signal of the second predetermined frequency may be transmitted to the out-of-ear microphone 40 via the ear canal to generate a first acoustic feedback signal; meanwhile, the signal analysis module 50 may include a feedback control unit; on this basis, the feedback control unit can determine the transfer function of the feedback path by jointly estimating the second in-ear feedback signal received by the in-ear microphone 30 and the first acoustic feedback signal received by the out-of-ear microphone 40.
In the hearing device provided in the above embodiment, the audio signal of the second preset frequency sent by the receiver 20 is transmitted through the ear canal to generate the second in-ear feedback signal and the first acoustic feedback signal, and the in-ear microphone 30 of the hearing device can receive the second in-ear feedback signal in the ear; compared with the method that signals are collected by depending on the original microphone of the hearing device, the feedback path required by receiving the signals is shorter, and the problem of inaccurate estimation is not easy to cause; meanwhile, the accuracy of the feedback control unit determining the transfer function of the feedback path is further improved by jointly analyzing the first acoustic feedback signal received by the ear microphone 40.
Specifically, since the in-ear microphone 30 is disposed near the receiver 20, a second in-ear feedback signal received by the in-ear microphone 30 in the ear can be approximately regarded as an instant output signal of the receiver 20, and a signal received by the out-of-ear microphone 40 is an acoustic feedback signal generated by an audio signal at a second preset frequency through an acoustic feedback path of the ear canal; by jointly analyzing the immediate output signal and the acoustic feedback signal received by the ear microphone 40, a more accurate feedback suppression function can be realized, and the influence of a nonlinear relationship between the audio signal played by the receiver 20 and the driving signal of the receiver 20 on the realization of the feedback suppression function is avoided.
That is, the above-mentioned embodiment provides a hearing device that estimates the audio signal actually emitted by the receiver 20 based on the second in-ear feedback signal obtained after the audio signal of the second preset frequency emitted by the receiver 20 is transmitted and acquired by the in-ear microphone 30, so that the estimation result is more accurate, and the influence that the nonlinear part (such as pulse density modulation driving, digital-to-analog conversion and/or class-D amplifier, etc.) in the feedback path estimation may have on the feedback path estimation is eliminated.
Some possible embodiments of the present application will be described in detail below, taking as an example the case where the hearing device obtains the ear canal characteristic information through the in-ear microphone 30.
There are significant individual differences in ear canal characteristics, and thus ear canal frequency responses vary from person to person. In particular, the ear canal and eardrum theoretically form part of the front cavity of the receiver 20, so that the geometry, shape and/or bending direction, etc. have an influence on the actual output of the receiver 20, in particular on high frequency audio signals. The ear canal characteristics are extracted when the hearing device is worn for the first time, so that the estimation of the ear canal frequency response of different users can be realized, and support is provided for the personalized parameter configuration of the hearing device; the ear canal frequency response referred to in the present application may refer to different frequency response characteristics that are generated due to different shapes of ear canals when the ear canals are used as front cavities of the receivers 20.
In one embodiment, the audio signal emitted by the receiver 20 may include a frequency sweep signal; the sweep frequency signal is reflected by the auditory canal to form a third in-ear feedback signal; meanwhile, the signal analysis module 50 may include an ear canal characteristic detection unit, which is capable of deriving ear canal characteristic information based on the third in-ear feedback signal.
The swept-frequency signal emitted by the hearing device provided by the above embodiment is reflected by the ear canal to form a third in-ear feedback signal, and the in-ear microphone 30 of the hearing device acquires the third in-ear feedback signal in the ear, so that the ear canal characteristic detection unit can obtain the ear canal characteristic information according to the third in-ear feedback signal received in the ear and analyze the shape of the ear canal.
It is to be understood that the present application is not limited to a specific type of ear canal characteristic information; the ear canal characteristic information referred to in the present application may include, but is not limited to, one or more of ear canal geometry, ear canal shape, ear canal inflection direction, ear canal volume or ear canal frequency response, and the like.
It should be noted that the frequency sweep signal referred to in this application may include an audio signal designed for testing, the signal being within a predetermined frequency band and the frequency being continuously changed from high to low/low to high. The specific range of the preset frequency band is not limited in the present application, and in one embodiment, the range of the preset frequency band is 50Hz to 10kHz, and the amplitude is lower than 20 dB.
In one embodiment, the sweep signal from receiver 20 comprises a multi-directional sweep signal.
The multi-directional scanning signals sent by the hearing device provided by the above embodiment are reflected by the ear canal to form third in-ear feedback signals in different directions, and the in-ear microphone 30 of the hearing device receives the third in-ear feedback signals in different directions in the ear, so that the ear canal characteristic detection unit can analyze the ear canal characteristic information according to the third in-ear feedback signals in different directions received in the ear, and the accuracy degree is high.
Alternatively, the frequency sweep signal may be emitted by the receiver 20 when the hearing device is first introduced into the ear.
Some possible embodiments of the present application will be described in detail below by taking as an example the function of the hearing device to perform failure analysis on the receiver 20 through the in-ear microphone 30.
In one embodiment, the audio signal may be transmitted through the ear canal to the in-ear microphone 30 to generate a corresponding in-ear feedback signal; meanwhile, the signal analysis module 50 may include a receiver failure analysis unit, and the receiver failure analysis unit may obtain a first frequency response curve and a second frequency response curve respectively at least according to an in-ear feedback signal corresponding to the first time and an in-ear feedback signal corresponding to the second time; analyzing the first frequency response curve and the second frequency response curve; and judging whether the receiver 20 is failed according to the analysis result.
The hearing device provided by the above embodiment can obtain the first frequency response curve at least according to the in-ear feedback signal corresponding to the first time, and obtain the second frequency response curve according to the in-ear feedback signal corresponding to the second time, thereby implementing failure analysis on the hearing device receiver 20 according to the first frequency response curve and the second frequency response curve.
It should be noted that transmitting the audio signal to the in-ear microphone 30 via the ear canal to generate the corresponding in-ear feedback signal may include: an audio signal sent by the receiver 20 at a first time is transmitted to the in-ear microphone 30 through the ear canal, and an in-ear feedback signal corresponding to the first time is generated; the audio signal emitted by the receiver 20 at the second time is transmitted to the in-ear microphone 30 via the ear canal, and an in-ear feedback signal corresponding to the second time is generated.
It can be understood that the receiver failure analysis unit obtains the first frequency response curve and the second frequency response curve respectively at least according to the in-ear feedback signal corresponding to the first time and the in-ear feedback signal corresponding to the second time, but the number of in-ear feedback signals according to which the receiver failure analysis unit determines whether the receiver 20 fails is not limited to the above embodiment, for example, the receiver failure analysis unit can obtain a plurality of frequency response curves according to in-ear feedback signals generated by a plurality of different audio signals transmitted to the in-ear microphone 30 through the ear canal; then, analyzing the multiple frequency response curves, and judging whether the receiver 20 fails according to the analysis result; the receiver failure analysis unit can also transmit an in-ear feedback signal generated by the in-ear microphone 30 through the ear canal according to the sweep frequency signal, and obtain a plurality of frequency response curves with preset frequency or preset time; and then analyzing the multiple frequency response curves, and judging whether the receiver 20 fails according to the analysis result.
The specific manner of analyzing the first frequency response curve and the second frequency response curve is not limited in the application; in one embodiment, the spectrum drift analysis may be performed according to the first frequency response curve and the second frequency response curve to realize the analysis of the first frequency response curve and the second frequency response curve.
It should be noted that the first time referred to in the present application may be when the user uses the hearing device for the first time, or when the hearing device leaves a factory; the second time referred to in this application may be each time the user starts the operation, that is, each time the user starts the operation, the above failure analysis is performed to determine whether to issue a failure alarm to the user. This is very necessary for users who rely on hearing aids.
It should be noted that, the present application is not limited to the specific structure of the signal analysis module 50; the signal analysis module 50 may include any one or more of an in-ear detection unit, a feedback control unit, an ear canal characteristic detection unit, or a receiver failure analysis unit.
The relative position relationship between the in-ear microphone 30 and the receiver 20 is not particularly limited in the present application. In one embodiment, referring to fig. 4, the in-ear microphone 30 can be fixed to the side of the receiver 20.
It is understood that the present application is not limited to the specific form of the in-ear microphone 30, and the in-ear microphone 30 may include, but is not limited to, a condenser microphone or a silicon microphone, etc.
In one embodiment, the in-ear microphone 30 includes a side-opening silicon microphone fixed to the side of the receiver 20, and as shown in fig. 4, the direction of the sound hole of the side-opening silicon microphone may be the same as the direction of the sound hole of the receiver 20.
With continued reference to fig. 4, in one embodiment, the hearing device may further include a sound tube 70, and the in-ear microphone 30 and the receiver 20 are connected to the sound tube 70; meanwhile, the in-ear microphone 30 and the receiver 20 can be packaged together in the package structure 80, the package structure 80 has an opening, and the sound hole of the side-opening silicon microphone and the sound hole of the receiver 20 both face the opening.
It is understood that the present application is not limited to the specific form of the receiver 20, and the receiver 20 may include, but is not limited to, a moving iron type receiver or a piezoelectric receiver, etc.
In one embodiment, the ear microphone 40 may include a first ear microphone and a second ear microphone; specifically, the first ear microphone and the second ear microphone are both connected to the signal analysis module 50.
In the description of the present specification, reference to the description of the terms "in one embodiment," "possible embodiment," "some embodiments," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic depictions of the above terms do not necessarily refer to the same embodiment or example.
All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A hearing device is characterized by comprising a device body, a receiver, an in-ear microphone, an out-of-ear microphone and a signal analysis module;
the receiver is used for sending out an audio signal, the audio signal forms an in-ear feedback signal through feedback, and the audio signal forms an acoustic feedback signal through transmission of an acoustic feedback path;
the in-ear microphone is arranged at the near end of the equipment body and used for receiving the in-ear feedback signal;
the ear microphone is arranged at the far end of the equipment body and used for receiving the acoustic feedback signal;
the signal analysis module is connected with the in-ear microphone and the out-of-ear microphone and used for analyzing the in-ear feedback signal and the acoustic feedback signal to obtain an analysis result.
2. A hearing instrument as set forth in claim 1, where the signal analysis module comprises a processing unit and an analysis unit; wherein
The processing unit is connected with the in-ear microphone and the out-of-ear microphone and is used for carrying out digital processing on the in-ear feedback signals collected by the in-ear microphone to obtain feedback electric signals and carrying out digital processing on the sound feedback signals collected by the out-of-ear microphone to obtain sound feedback electric signals;
the analysis unit is connected with the processing unit and used for analyzing the feedback electric signal and the acoustic feedback electric signal to obtain an analysis result.
3. A hearing instrument as set forth in claim 1, further comprising an application control module connected to the signal analysis module for issuing control application instructions to the back-end circuitry based on the analysis result obtained by the signal analysis module.
4. A hearing instrument as set forth in claim 1, where the in-ear microphone is fixed to the side of the receiver.
5. A hearing device as set forth in claim 4, wherein the in-ear microphone comprises a side-aperture silicon microphone;
the side-opening silicon microphone is fixed on the side face of the telephone receiver, and the direction of the sound hole of the side-opening silicon microphone is consistent with that of the sound hole of the telephone receiver.
6. A hearing instrument as set forth in claim 5, further comprising a sound tube, the in-ear microphone and the receiver being connected to the sound tube;
the in-ear microphone and the telephone receiver are packaged in a packaging structure together, the packaging structure is provided with an opening, and the sound hole of the side-opening silicon microphone and the sound hole of the telephone receiver face the opening.
7. A hearing device as set forth in claim 4, where the receiver comprises a moving iron receiver.
8. A hearing instrument as set forth in claim 1, wherein the off-ear microphone comprises a first off-ear microphone and a second off-ear microphone;
the first out-of-ear microphone and the second out-of-ear microphone are both connected with the signal analysis module.
9. A hearing instrument as set forth in claim 1, wherein the audio signal in the feedback process is compensated with a first state probability parameter to obtain the in-ear feedback signal;
and compensating the audio signal in the transmission of the acoustic feedback path by adopting the second state probability parameter to obtain the acoustic feedback signal.
10. A hearing instrument as set forth in claim 3, wherein the application control module comprises a controller for issuing the control application instruction to the back-end circuitry.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123187242.0U CN217064005U (en) | 2021-12-17 | 2021-12-17 | Hearing device |
| US17/971,587 US20230119844A1 (en) | 2021-10-17 | 2022-10-22 | Hearing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123187242.0U CN217064005U (en) | 2021-12-17 | 2021-12-17 | Hearing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114268892A (en) * | 2021-12-17 | 2022-04-01 | 上海联影微电子科技有限公司 | Hearing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114268892A (en) * | 2021-12-17 | 2022-04-01 | 上海联影微电子科技有限公司 | Hearing device |
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