Spectacle hearing aid

Abstract

The application relates to a glasses type hearing aid, which comprises a glasses frame, a glasses lens, two glasses legs and two hearing aid bodies; the glasses lens is arranged in the glasses frame, and the two glasses legs are arranged at the two sides of the glasses frame respectively; the free ends of the two glasses legs are connected to the two hearing aid bodies respectively; a sound guide groove and a resonance component are arranged in the glasses legs from the glasses frame to the hearing aid bodies in the direction; the inlet of the sound guide groove is close to the glasses frame; the first outlet of the sound guide groove is connected to the air conduction sound transmission system of the hearing aid body; the second outlet of the sound guide groove is connected to the resonance component, and the resonance component is connected to the bone conduction sound transmission system of the hearing aid body; the beneficial effect is that the double noise reduction mechanisms work together, so that the user can effectively shield noise interference even in a noisy environment such as a shopping mall or a traffic intersection, the speech signal clarity is obviously improved, and the hearing aid effect is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of hearing aid technology, and more particularly to an eyeglasses-type hearing aid. Background Technology

[0002] Current hearing aids are not adequately suited for patients with conductive hearing loss, such as those with external or middle ear malformations (e.g., microtia), those who have undergone surgery for chronic otitis media, or those with atresia of the ear canal. These patients have limited effectiveness with air conduction hearing aids alone due to structural abnormalities in the external or middle ear; while traditional bone conduction hearing aids suffer from poor high-frequency response and discomfort. Furthermore, patients with mixed hearing loss (e.g., age-related hearing loss combined with otitis media) require compensation for both air and bone conduction hearing loss, which current devices struggle to achieve synergistic dual-mode enhancement. Hearing loss not only leads to communication difficulties, impacting their social interactions and mental health, but may also increase their risk of accidents and reduce their independence and sense of security.

[0003] Currently, most traditional hearing aids rely solely on either air conduction or bone conduction systems. Air conduction systems transmit sound through the air, making them susceptible to environmental noise. For individuals with predominantly low-frequency hearing loss and some degree of mild to moderate sensorineural hearing loss, the effectiveness may be less than ideal. Bone conduction systems transmit sound to the inner ear through skull vibrations. While this can mitigate external noise interference to some extent, its amplification of low-frequency sounds is less effective than air conduction systems. Therefore, a single transmission method cannot adequately meet the diverse hearing needs of patients with conductive or mixed hearing loss. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides an eyeglass-type hearing aid that provides a fusion hearing aid solution for patients with conductive / mixed hearing loss by synergistic amplification of air conduction and bone conduction. Through physical structure design, it achieves pre-filtering of environmental noise and reduces the computational load of electronic noise reduction algorithms. It solves the technical problem that the prior art cannot meet the hearing needs of patients.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the main technical solutions adopted by the present invention include:

[0008] This invention provides an eyeglass-style hearing aid, comprising a frame, lenses, two temples, and two hearing aid bodies. The lenses are disposed within the frame, and the two temples are respectively disposed on both sides of the frame. The free ends of the two temples are respectively connected to the two hearing aid bodies. A sound guide groove and a resonance component are disposed inside the temples in the direction from the frame to the hearing aid body. The entrance of the sound guide groove is close to the frame. The first outlet of the sound guide groove is connected to the air conduction sound transmission system of the hearing aid body. The second outlet of the sound guide groove is connected to the resonance component, and the resonance component is connected to the bone conduction sound transmission system of the hearing aid body.

[0009] Optionally, the sound guide groove is provided with multiple periodically arranged sawtooths; the multiple sawtooths form a low-frequency suppression zone, a transition matching zone, and a high-frequency optimization zone distributed in the direction from the frame to the hearing aid body within the sound guide groove; the sawtooth density in the low-frequency suppression zone is less than that in the transition matching zone, and the sawtooth density in the transition matching zone is less than that in the high-frequency optimization zone; the sawtooth depth in the low-frequency suppression zone is greater than that in the transition matching zone, and the sawtooth depth in the transition matching zone is greater than that in the high-frequency optimization zone.

[0010] Optionally, the tooth pitch in the low-frequency suppression region is 3.5–3.7 mm and the tooth depth is 0.8–1.2 mm; the tooth pitch in the transition matching region is 1.3–1.5 mm and the tooth depth is 0.4–0.6 mm; and the tooth pitch in the high-frequency optimization region is 1–1.2 mm and the tooth depth is 0.15–0.25 mm.

[0011] Optionally, the angle between the incident side of the sawtooth and the axis of the sound guide groove is 33° to 37°; the angle between the exit side of the sawtooth and the axis of the sound guide groove is 68° to 72°.

[0012] Optionally, the resonant assembly includes a resonator, a conical coupling pad, and a waveguide layer; the second outlet of the sound guide groove is connected to the resonator, the resonator is connected to the cone tip of the conical coupling pad, and the cone bottom of the conical coupling pad is connected to the bone conduction system through the waveguide layer.

[0013] Optionally, the resonator includes an integrally formed connecting tube and a teardrop-shaped cavity; the inlet of the connecting tube is connected to the second outlet of the sound guide groove; the cone tip of the cone-shaped coupling pad is connected to the teardrop-shaped cavity.

[0014] Optionally, the resonator also includes an anti-interference plate; the anti-interference plate is flexibly hinged to the top of the teardrop-shaped cavity, and the distance between the anti-interference plate and the outlet of the connecting pipe is greater than 8mm.

[0015] Optionally, the hearing aid body includes a protective shell, a microphone, a bone conduction sensor, a DSP, a control circuit, a receiver, and a bone conduction vibrator; the microphone and DSP are located inside the protective shell, and the receiver and bone conduction vibrator are located at opposite ends of the protective shell; the microphone and bone conduction sensor are connected to the DSP, and the DSP is connected to the receiver and bone conduction vibrator through the control circuit; the protective shell is connected to the free end of the temple; the microphone, DSP, and receiver form an air conduction sound transmission system, and the microphone is connected to the second outlet of the sound guide groove; the bone conduction sensor, DSP, and bone conduction vibrator form a bone conduction sound transmission system, and the bone conduction sensor is connected to the resonant assembly.

[0016] Optionally, the control circuit includes an air conduction circuit and a bone conduction circuit; the DSP is connected to the receiver through the air conduction circuit; a potentiometer is provided on the air conduction circuit; a sliding rheostat is provided on the bone conduction circuit; the potentiometer and the sliding rheostat have the same resistance adjustment range, and the linear change of resistance corresponding to the adjustment stroke is the same.

[0017] Optionally, the hearing aid body also includes a volume adjustment component; the volume adjustment component includes an adjustment knob, an air conduction adjustment component, and a bone conduction adjustment component; the adjustment knob is mounted on the protective shell and is connected to the air conduction adjustment component and the bone conduction adjustment component; the air conduction adjustment component is connected to a potentiometer, and the bone conduction adjustment component is connected to a sliding rheostat; by rotating the adjustment knob, the resistance of the potentiometer and the sliding rheostat are simultaneously adjusted via the air conduction adjustment component and the bone conduction adjustment component to achieve simultaneous volume adjustment of air conduction and bone conduction sound transmission.

[0018] (III) Beneficial Effects

[0019] The beneficial effects of this invention are:

[0020] This invention provides an eyeglasses-style hearing aid that integrates the hearing aid body into the end of the temple of eyeglasses, combining the glasses and the hearing aid into one device, completely changing the traditional method of wearing hearing aids separately. For patients with conductive / mixed hearing loss, no additional operation is required to put on the hearing aid, significantly reducing the difficulty of use and improving the convenience of daily use. Thanks to the fixing effect of the eyeglass frame, this design is particularly suitable for young patients with myopia or hyperopia combined with conductive / mixed hearing loss compared to traditional hearing aids. It is less likely to shift or fall off during daily activities (such as walking, bending over, and sports), ensuring that the hearing aid is always in an effective working position. At the same time, the temples can evenly distribute weight, avoiding localized pressure on the ear, reducing discomfort caused by prolonged wear, and improving wearing comfort and compliance. Furthermore, it provides excellent protection for young people who do not want to be discovered wearing hearing aids. The sawtooth structure of the sound guide groove actively cancels environmental noise through the principle of acoustic interference (e.g., the sawtooth in the low-frequency region reduces traffic noise <500Hz through phase difference). The Helmholtz cavity of the resonant component selectively enhances the 1-3kHz speech band, achieving dual processing of mechanical filtering and electronic noise reduction, and significantly improving the signal-to-noise ratio.

[0021] The sound guide slot is located near the frame (at the front of the temple, close to the temporal side of the face), prioritizing the acquisition of ambient sound from the front and sides, while avoiding noise from behind the head. The sound guide slot selectively enhances the transmission efficiency of the mainstream speech energy frequency band, suppressing low-frequency noise (such as wind noise, mechanical noise, and other environmental noise). The resonance component further amplifies the target speech frequency band through physical resonance, suppressing specific noise frequencies (such as high-frequency drumbeats and harsh noises in music), achieving "coarse filtering of ambient sound" and reducing the computational load of subsequent electronic noise reduction. Simultaneously, the resonance component transmits mechanical vibrations to the bone conduction system, converting sound into skull vibrations that are transmitted to the inner ear. Thus, through the sound guide slot and resonance component, frequency band selection and noise attenuation are achieved, preprocessing the original ambient sound into a "cleaner speech base." The hearing aid body then further eliminates residual noise. This dual noise reduction mechanism works synergistically, allowing users to effectively shield themselves from noise interference even in noisy environments such as shopping malls or traffic intersections, significantly improving speech signal clarity and greatly enhancing the hearing aid's effectiveness. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a glasses-type hearing aid according to Embodiment 1 of the present invention;

[0023] Figure 2 This is a schematic diagram of the temple and resonant assembly of Embodiment 1 of the present invention;

[0024] Figure 3 This is a schematic diagram showing the connection relationship between the air conduction sound transmission system and the bone conduction sound transmission system in Embodiment 1 of the present invention.

[0025] [Explanation of Labels in the Attached Image]

[0026] 1: Frame; 2: Lens; 3: Temple; 4: Hearing aid body; 41: Protective shell; 42: Microphone; 43: Bone conduction sensor; 44: DSP; 45: Receiver; 46: Bone conduction vibrator; 47: Potentiometer; 48: Sliding rheostat; 49: Adjustment knob; 5: Sound guide groove; 51: Sawtooth; 61: Conical coupling pad; 62: Waveguide layer; 63: Connecting tube; 64: Teardrop-shaped cavity; 65: Anti-interference plate. Detailed Implementation

[0027] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.

[0028] Example 1:

[0029] like Figure 1 As shown, a specific embodiment of the present invention provides an eyeglass-style hearing aid, including a frame 1, a lens 2, two temples 3, and two hearing aid bodies 4; the lens 2 is disposed inside the frame 1, and the two temples 3 are respectively disposed on both sides of the frame 1; the free ends of the two temples 3 are respectively connected to the two hearing aid bodies 4; a sound guide groove 5 and a resonance component are disposed inside the temples 3 in the direction from the frame 1 to the hearing aid body 4; the entrance of the sound guide groove 5 is close to the frame 1; the first outlet of the sound guide groove 5 is connected to the air conduction sound transmission system of the hearing aid body 4; the second outlet of the sound guide groove 5 is connected to the resonance component, and the resonance component is connected to the bone conduction sound transmission system of the hearing aid body 4.

[0030] Specifically, the hearing aid body 4 is integrated into the end of the temple 3 of the glasses, making the glasses and hearing aid one and the same, completely changing the traditional method of wearing hearing aids separately. For patients with conductive / mixed hearing loss, there is no need for additional operation to put on the hearing aid, significantly reducing the difficulty of use and improving the convenience of daily use. With the fixing effect of the glasses frame 1, compared with traditional hearing aids, this design is especially suitable for young patients with myopia or hyperopia combined with conductive / mixed hearing loss. It is less likely to shift or fall off during daily activities (such as walking, bending over, sports, etc.), ensuring that the hearing aid body 4 is always in an effective working position. At the same time, the temple 3 can evenly distribute the weight, avoid local pressure on the ear, reduce discomfort caused by wearing for a long time, and improve wearing comfort and compliance. It also has a good protective effect on the psychology of young people who do not want to be discovered to wear hearing aids. The sawtooth structure of the sound guide slot actively cancels out environmental noise through the principle of sound wave interference (e.g., the sawtooth in the low-frequency region reduces traffic noise <500Hz through phase difference). The Helmholtz cavity of the resonant component selectively enhances the 1-3kHz speech band, achieving dual processing of mechanical filtering and electronic noise reduction, significantly improving the signal-to-noise ratio. The entrance of the sound guide slot 5 is close to the frame 1 (located at the front of the temple 3, close to the temporal side of the face), prioritizing the acquisition of ambient sounds from the front and sides, avoiding noise behind the head. Furthermore, the sound guide slot 5 can selectively enhance the transmission efficiency of the mainstream speech energy frequency band, suppressing low-frequency noise (environmental noise such as wind noise and mechanical noise). The resonant component further amplifies the target speech band through the principle of physical resonance, suppressing specific noise frequencies (such as high-frequency drumbeats and harsh noises in music), achieving "coarse filtering of ambient sounds," reducing the computational load of subsequent electronic noise reduction. Simultaneously, the resonant component transmits mechanical vibrations to the bone conduction system, converting sound into skull vibrations that are transmitted to the inner ear. Thus, frequency band filtering and noise attenuation are achieved through the sound guide groove 5 and the resonance component, preprocessing the original ambient sound into a "cleaner speech base", and then further eliminating residual noise through the hearing aid body 4. The dual noise reduction mechanism works together to effectively shield noise interference even in noisy environments such as shopping malls and traffic intersections, significantly improving the clarity of speech signals and greatly improving the hearing aid effect.

[0031] Furthermore, such as Figure 2As shown, the sound guide groove 5 is provided with multiple periodically arranged sawtooth 51s. These sawtooth 51s form a low-frequency suppression zone, a transition matching zone, and a high-frequency optimization zone distributed along the direction from the frame 1 to the hearing aid body 4 within the sound guide groove 5. In this embodiment, the sawtooth 51 arrangement density in the low-frequency suppression zone is less than that in the transition matching zone, and the sawtooth 51 arrangement density in the transition matching zone is less than that in the high-frequency optimization zone. The tooth depth of the sawtooth 51s in the low-frequency suppression zone is greater than that in the transition matching zone, and the tooth depth of the sawtooth 51s in the transition matching zone is greater than that in the high-frequency optimization zone. The low-frequency suppression zone within the sound guide groove 5 has a low sawtooth 51 arrangement density and a large tooth depth, which effectively reflects and scatters low-frequency sounds, thereby suppressing the propagation of low-frequency noise. For example, low-frequency humming sounds in the environment and low-frequency vibration sounds from machines will have their energy significantly attenuated after passing through the low-frequency suppression zone, reducing the low-frequency noise entering the subsequent processing stage of the hearing aid, avoiding interference from low-frequency noise on the sound signal, and improving the overall sound clarity. The serration density and depth of the 51 teeth in the transition matching zone lie between the low-frequency suppression zone and the high-frequency optimization zone, providing a smooth transition and making the frequency connection between low and high frequencies more natural. In this region, the frequency characteristics of the sound can transition more smoothly from low to high frequencies, reducing distortion caused by frequency abrupt changes and making the sound more coherent and comfortable. The high-frequency optimization zone has a high 51-tooth density and shallow tooth depth, which is beneficial for focusing and enhancing high-frequency sounds, and can better capture and preserve high-frequency sound signals, such as sibilance in speech, birdsong, and other high-frequency details. By optimizing high-frequency sounds, the clarity and intelligibility of the sound are improved, allowing patients with conductive / mixed hearing loss to hear various sounds more clearly.

[0032] Preferably, in this embodiment, the tooth pitch in the low-frequency suppression zone is 3.5–3.7 mm, and the tooth depth is 0.8–1.2 mm. Low-frequency sounds have relatively long wavelengths, and a larger tooth depth and relatively larger tooth pitch can match the wavelength characteristics of low-frequency sounds. When low-frequency sounds enter the low-frequency suppression zone, the larger tooth depth causes the sound to be reflected and scattered multiple times between the sawtooth 51, prolonging the sound propagation path and consuming a large amount of low-frequency sound energy. For example, the low-frequency humming sound produced when an air conditioner is running, and the low-frequency vibration sound of vehicles driving on the street, will have their energy significantly attenuated after passing through this zone. This effectively reduces the interference of low-frequency noise on subsequent sound processing stages, providing a good foundation for clearer processing and amplification of useful sound signals. The tooth pitch in the transition matching zone is 1.3–1.5 mm, and the tooth depth is 0.4–0.6 mm. This allows for a smoother transition between low and high frequencies, ensuring that there are no obvious breaks or abrupt changes in sound signals across different frequency bands during the transition. This reduces distortion caused by frequency abrupt changes, making the sound more coherent and comfortable, and avoiding abruptness caused by unnatural frequency transitions. The tooth pitch in the high-frequency optimization zone is 1–1.2 mm, and the tooth depth is 0.15–0.25 mm. Since high-frequency sounds have shorter wavelengths, a smaller tooth depth and relatively smaller tooth pitch better suit the characteristics of high-frequency sounds, facilitating the focusing and enhancement of high-frequency sounds. This allows the high-frequency signal to pass more concentratedly through the sound guide slot 5 during propagation. By enhancing the high-frequency signal, the clarity and intelligibility of the sound are improved, allowing users to hear various high-frequency sound information more clearly. The tooth pitch and tooth depth parameter settings provided in this embodiment can reduce the loss of high-frequency signals during propagation. High-frequency signals are relatively weak and easily affected by interference and attenuation from various factors. Smaller tooth depth and tooth pitch reduce the contact area and number of reflections between high-frequency sounds and the surface of the sawtooth 51, thereby reducing the energy loss of high-frequency signals and ensuring that high-frequency signals can be transmitted more effectively to the subsequent sound processing system.

[0033] Preferably, in this embodiment, the angle between the incident side of the sawtooth 51 and the axis of the sound guide groove 5 is 33° to 37°; thus, when sound enters from the incident side of the sawtooth 51, the effect of sound reflection and scattering can be improved. The incident angle provided in this embodiment allows the sound to form multiple reflections between the sawtooth 51, thereby more effectively adjusting the sound of different frequencies. For low-frequency sounds, this reflection can increase its propagation path, consume more energy, and achieve the purpose of suppressing low-frequency noise; for high-frequency sounds, reflection can make the signal more focused and enhance the intensity of the high-frequency signal. Further, the angle between the exit side of the sawtooth 51 and the axis of the sound guide groove 5 is 68° to 72°. This angle range can effectively guide the sound processed by the sawtooth 51 to propagate in a suitable direction, allowing the sound to propagate more accurately towards the exit direction of the sound guide groove 5, reducing the scattering and reflection loss of the sound within the sound guide groove 5. This helps to transmit the processed sound more efficiently to the subsequent sound transmission system, improving the sound transmission quality and efficiency. Moreover, it can have a positive impact on the frequency distribution of the sound. After being processed by the sawtooth 51, sounds of different frequencies propagate at a specific exit angle, which allows the frequency components of the sound to be more evenly distributed within the sound guide groove 5, preventing certain frequencies from being too concentrated or dispersed. This helps improve the overall balance and clarity of the sound, making the final sound more natural and comfortable.

[0034] Furthermore, such as Figure 2 As shown, the resonant assembly includes a resonator, a conical coupling pad 61, and a waveguide layer 62. The second outlet of the sound guide groove 5 is connected to the resonator, which is connected to the tip of the conical coupling pad 61. The bottom of the conical coupling pad 61 is connected to the bone conduction system via the waveguide layer 62. The resonator can efficiently convert acoustic energy into vibrational energy, selectively amplifying the target frequency and enhancing the intensity of subsequent bone conduction vibration. The vibration output from the resonator is transmitted from the tip (small area, high impedance) and gradually extends to the bottom (large area, low impedance) through the conical structure, better matching the vibration impedance of the skull. Furthermore, the conical structure has a focusing effect on vibration, concentrating the dispersed vibrational energy and guiding it to the skull surface. The waveguide layer 62 can suppress high-frequency resonance peaks, making the frequency response curve of vibration transmission flatter.

[0035] Furthermore, such as Figure 2As shown, the resonator includes an integrally formed connecting pipe 63 and a teardrop-shaped cavity 64; the inlet of the connecting pipe 63 is connected to the second outlet of the sound guide groove 5; the cone tip of the conical coupling pad 61 is connected to the teardrop-shaped cavity 64. The connecting pipe 63 and the teardrop-shaped cavity 64 together constitute a Helmholtz resonant cavity. When sound waves enter the Helmholtz resonant cavity through the second outlet of the sound guide groove 5, sound pressure fluctuations at a specific frequency induce mechanical resonance in the cavity. The resonance manifests as a slight vibration of the cavity wall, rather than the direct transmission of airborne sound. The teardrop-shaped cavity 64 can efficiently convert sound energy into vibrational energy, selectively amplifying the target frequency during the conversion process, thus enhancing the intensity of subsequent bone conduction vibration. The gradually decreasing cross-section of the teardrop shape creates an energy gradient distribution when the sound waves propagate within the cavity. The sound pressure is higher in the head region (at the outlet of the connecting pipe 63), which is beneficial for the efficient absorption of initial sound energy; the sound pressure gradually decreases in the tail region, avoiding nonlinear distortion caused by concentrated sound energy, allowing the resonator to maintain a linear response over a wide frequency range and reducing harmonic distortion.

[0036] In this embodiment, the volume of the teardrop-shaped cavity 64 is 0.1–0.2 cm³. 3 The diameter of connecting tube 63 is 1–1.5 mm, and the length of connecting tube 63 is 3–5 mm. The formula for calculating its Helmholtz resonance frequency f is:

[0037]

[0038] Where f is the Helmholtz resonance frequency, c is the speed of sound in air, A is the cross-sectional area of ​​the connecting tube 63, V is the volume of the teardrop-shaped cavity 64, and L is the length of the connecting tube 63.

[0039] Furthermore, such as Figure 2 As shown, in this embodiment, the resonator also includes an anti-interference plate 65; the anti-interference plate 65 is flexibly hinged to the top of the teardrop-shaped cavity 64, and the distance between the anti-interference plate 65 and the outlet of the connecting pipe 63 is greater than 8mm. The anti-interference plate 65 can prevent unnecessary interference and reflection of sound inside the resonator, avoiding distortion and interference of sound signals.

[0040] Furthermore, such as Figure 1 and Figure 3As shown, the hearing aid body 4 includes a protective shell 41, a microphone 42, a bone conduction sensor 43, a DSP (Digital Signal Processor) 44, a control circuit, a receiver 45, and a bone conduction vibrator 46. The microphone 42 and DSP 44 are disposed inside the protective shell 41, and the receiver 45 and bone conduction vibrator 46 are respectively disposed at both ends of the protective shell 41. The microphone 42 and bone conduction sensor 43 are respectively connected to the DSP 44, and the DSP 44 is connected to the receiver 45 and bone conduction vibrator 46 through the control circuit. The protective shell 41 is connected to the free end of the temple 3. The microphone 42, DSP 44, and receiver 45 form an air conduction sound transmission system, and the microphone 42 is connected to the second outlet of the sound guide groove 5. The bone conduction sensor 43, DSP 44, and bone conduction vibrator 46 form a bone conduction sound transmission system, and the bone conduction sensor 43 is connected to the resonance component. Microphone 42 collects ambient sound pre-processed by sound guide slot 5. DSP 44 further executes digital noise reduction algorithms (such as adaptive filtering and beamforming) to refine high-frequency noise (such as wind noise and keyboard noise). The processed signal is output through receiver 45. Bone conduction sensor 43 receives skull vibration signals (rich in mid-frequency speech energy) transmitted by the resonant component. DSP 44 independently amplifies and reduces noise, suppressing mechanical noise (such as joint friction noise) during vibration transmission. Finally, the signal is output through bone conduction vibrator 46. The dual-path parallel processing allows air conduction to focus on high-frequency details, while bone conduction enhances mid-frequency speech, significantly improving speech clarity in noisy environments.

[0041] Furthermore, the control circuit includes an air conduction circuit and a bone conduction circuit; the DSP44 is connected to the receiver 45 through the air conduction circuit; the DSP44 is connected to the air conduction circuit through the bone conduction circuit, and a potentiometer 47 is provided on the air conduction circuit; a sliding rheostat 48 is provided on the bone conduction circuit; the potentiometer 47 and the sliding rheostat 48 have the same resistance adjustment range, and the linear change of resistance corresponding to the adjustment stroke is the same. In this embodiment, the potentiometer 47 can achieve a gain adjustment of 0 to 35 dB, which is specifically designed to compensate for high-frequency hearing loss and adapt to the high-frequency hearing loss curve common among elderly users; the sliding rheostat 48 can also achieve a gain adjustment of 0 to 35 dB, focusing on optimizing the mid-frequency response, and working in conjunction with the physical amplification effect of the Helmholtz resonator to form a dual mid-frequency enhancement of "physical + electronic". The adjustment strokes of potentiometer 47 and sliding rheostat 48 correspond to the same linear change in resistance, that is, the linearity of the resistance change for air conduction circuit and bone conduction circuit is matched. For example, each 1mm adjustment stroke corresponds to a 1dB gain change, ensuring that the volume of the two channels changes synchronously and avoiding auditory discomfort caused by the imbalance of volume between air conduction and bone conduction.

[0042] Furthermore, the hearing aid body 4 also includes a volume adjustment component; the volume adjustment component includes an adjustment knob 49, an air conduction adjustment component, and a bone conduction adjustment component; the adjustment knob 49 is disposed on the protective shell 41, and the adjustment knob 49 is connected to the air conduction adjustment component and the bone conduction adjustment component; the air conduction adjustment component is connected to a potentiometer 47, and the bone conduction adjustment component is connected to a sliding rheostat 48; by rotating the adjustment knob 49, the resistance of the potentiometer 47 and the sliding rheostat 48 are simultaneously adjusted via the air conduction adjustment component and the bone conduction adjustment component, so as to simultaneously realize the volume adjustment of air conduction and bone conduction sound transmission. Specifically, the adjustment knob 49 is provided with a drive gear; the air conduction adjustment component includes an air conduction adjustment screw, an air conduction adjustment nut, and a first transmission gear; the air conduction adjustment screw is connected to the drive gear via the first transmission gear, and the air conduction adjustment screw is connected to the limit switch of the potentiometer 47 via the air conduction adjustment nut. The bone conduction adjustment assembly includes a bone conduction adjustment screw, a bone conduction adjustment nut, and a second transmission gear. The bone conduction adjustment screw is connected to the second transmission gear via a drive gear, and the bone conduction adjustment screw is connected to the limit switch of the sliding rheostat 48 via the bone conduction adjustment nut. By turning the adjustment knob 49, both the air conduction adjustment nut and the bone conduction adjustment nut can be moved simultaneously, thereby achieving simultaneous adjustment of the dual-channel volume.

[0043] The use of the glasses-type hearing aid provided in this embodiment is as follows: patients with conductive / mixed hearing loss can simply wear glasses. The hearing aid body 4 at the end of the temple 3 naturally fits the head through the temple 3. The entrance of the sound guide groove 5 is aligned with the ambient sound acquisition area at the temple. At the same time, the bone conduction vibrator 46 fits against the skull behind the ear. Ambient sound enters the sound guide slot 5 and undergoes preprocessing in sequence through the low-frequency suppression zone, transition matching zone, and high-frequency optimization zone. The preprocessed sound then enters the microphone 42 of the air conduction system through the first outlet of the sound guide slot 5. The microphone 42 collects the preprocessed ambient sound from the sound guide slot 5, and the DSP 44 further executes a digital noise reduction algorithm to refine the high-frequency noise. The processed signal is then output through the receiver 45. Simultaneously, the preprocessed sound enters the Helmholtz resonator through the second outlet of the sound guide slot 5 to amplify specific frequencies. Then, the vibration is transmitted to the bone conduction sensor 43 via the conical coupling pad 61 and the waveguide layer 62. The bone conduction sensor 43 receives the vibration signal transmitted by the waveguide layer 62, and the DSP 44 independently amplifies and reduces noise to suppress mechanical noise during vibration transmission. Finally, the signal is output through the bone conduction vibrator 46. When the user needs to adjust the volume, turning the adjustment knob 49 simultaneously adjusts the air conduction and bone conduction volumes.

[0044] Example 2:

[0045] This embodiment provides an eyeglass hearing aid, which includes all the structures of the eyeglass hearing aid described in Embodiment 1.

[0046] In this embodiment, the temple 3 and the hearing aid body 4 are detachably connected, preferably with a magnetic quick-release interface or a snap-on structure, enabling rapid separation or assembly of the temple 3 and the hearing aid body 4. The end of the temple 3 has a recessed interface with built-in conductive contacts, precisely engaging with the probe-type electrodes of the hearing aid body 4 to ensure stable signal and power transmission. After removing the temple 3, the hearing aid body 4 can be fixed behind the ear using a detachable ear hook. When the temple 3 is connected to the body, the sound guide groove 5 and the resonance component operate normally, achieving dual noise reduction through "physical pre-processing + electronic fine processing"; after removing the temple 3, the hearing aid body 4 switches to a pure electronic noise reduction mode, where ambient sound is directly collected by the miniature microphone at the front of the body, discarding the physical filtering function of the sound guide groove 5.

[0047] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0048] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0049] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," or "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0050] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0051] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A hearing aid in the form of eyeglasses, characterized in that it comprises a frame (1), lenses (2), two temples (3) and two hearing aid bodies (4); the lenses (2) are arranged in the frame (1), and the two temples (3) are arranged on the two sides of the frame (1) respectively; the free ends of the two temples (3) are connected to the two hearing aid bodies (4) respectively; a sound guide groove (5) and a resonance assembly are arranged in the temples (3) from the frame (1) to the hearing aid bodies (4); the inlet of the sound guide groove (5) is close to the frame (1); the first outlet of the sound guide groove (5) is connected to the air conduction sound transmission system of the hearing aid body (4); the second outlet of the sound guide groove (5) is connected to the resonance assembly, and the resonance assembly is connected to the bone conduction sound transmission system of the hearing aid body (4).

8. The hearing aid in the form of eyeglasses according to claim 1, characterized in that a plurality of periodic sawteeth (51) are arranged in the sound guide groove (5).

9. The hearing aid in the form of eyeglasses according to claim 1, characterized in that the plurality of sawteeth (51) form a low-frequency suppression zone, a transition matching zone and a high-frequency optimization zone distributed from the frame (1) to the hearing aid bodies (4) in the sound guide groove (5).

10. The hearing aid in the form of eyeglasses according to claim 1, characterized in that the arrangement density of the sawteeth (51) in the low-frequency suppression zone is less than that in the transition matching zone, and the arrangement density of the sawteeth (51) in the transition matching zone is less than that in the high-frequency optimization zone.

11. The hearing aid in the form of eyeglasses according to claim 1, characterized in that the tooth depth of the sawteeth (51) in the low-frequency suppression zone is greater than that in the transition matching zone, and the tooth depth of the sawteeth (51) in the transition matching zone is greater than that in the high-frequency optimization zone.

12. The hearing aid in the form of eyeglasses according to claim 1, characterized in that the tooth pitch of the sawteeth (51) in the low-frequency suppression zone is 3.5-3.7 mm, and the tooth depth is 0.8-1.2 mm; the tooth pitch of the sawteeth (51) in the transition matching zone is 1.3-1.5 mm, and the tooth depth is 0.4-0.6 mm; and the tooth pitch of the sawteeth (51) in the high-frequency optimization zone is 1-1.2 mm, and the tooth depth is 0.15-0.25 mm.

13. The hearing aid in the form of eyeglasses according to claim 1, characterized in that the included angle between the incident side of the sawteeth (51) and the axis of the sound guide groove (5) is 33°-37°, and the included angle between the outgoing side of the sawteeth (51) and the axis of the sound guide groove (5) is 68°-72°.

14. The hearing aid in the form of eyeglasses according to claim 1, characterized in that the resonance assembly comprises a resonator, a tapered coupling pad (61) and a waveguide layer (62); the second outlet of the sound guide groove (5) is connected to the resonator, the tapered coupling pad (61) is connected to the tapered tip end of the resonator, and the tapered bottom end of the tapered coupling pad (61) is connected to the bone conduction sound transmission system through the waveguide layer (62).

15. The hearing aid in the form of eyeglasses according to claim 4, characterized in that the resonator comprises an integrated connecting pipe (63) and a water droplet-shaped cavity (64); the inlet of the connecting pipe (63) is connected to the second outlet of the sound guide groove (5), and the tapered tip end of the tapered coupling pad (61) is connected to the water droplet-shaped cavity (64).

16. The hearing aid in the form of eyeglasses according to claim 5, characterized in that the resonator further comprises an anti-interference plate (65); the anti-interference plate (65) is flexibly hinged to the top of the water droplet-shaped cavity (64), and the distance between the anti-interference plate (65) and the outlet of the connecting pipe (63) is greater than 8 mm. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The hearing aid body (4) comprises a protective shell (41), a microphone (42), a bone conduction sensor (43), a DSP (44), a control circuit, a receiver (45) and a bone conduction vibrator (46); The microphone (42) and the DSP (44) are arranged inside the protective shell (41), and the receiver (45) and the bone conduction vibrator (46) are arranged at two ends of the protective shell (41) respectively; the microphone (42) and the bone conduction sensor (43) are connected to the DSP (44) respectively, and the DSP (44) is connected to the receiver (45) and the bone conduction vibrator (46) through the control circuit; The protective shell (41) is connected to the free end of the glasses leg (3); the microphone (42), the DSP (44) and the receiver (45) form an air conduction sound collection system, the microphone (42) is communicated with the second outlet of the sound guide groove (5); the bone conduction sensor (43), the DSP (44) and the bone conduction vibrator (46) form a bone conduction sound collection system, and the bone conduction sensor (43) is connected to the resonance assembly.

8. The eyeglass hearing aid of claim 7, wherein The control circuit comprises an air conduction circuit and a bone conduction circuit; The DSP (44) is connected to the receiver (45) through the air conduction circuit; the DSP (44) is connected to the bone conduction vibrator (46) through the bone conduction circuit A potentiometer (47) is arranged on the air conduction circuit; a sliding rheostat (48) is arranged on the bone conduction circuit; The resistance adjustment ranges of the potentiometer (47) and the sliding rheostat (48) are the same, and the linear changes of the adjustment strokes corresponding to the resistances are the same.

9. The eyeglass hearing aid of claim 1, wherein The hearing aid body (4) further comprises a volume adjustment assembly; The volume adjustment assembly comprises an adjustment knob (49), an air conduction adjustment assembly and a bone conduction adjustment assembly; The adjustment knob (49) is arranged on the protective shell (41), and the adjustment knob (49) is drivingly connected to the air conduction adjustment assembly and the bone conduction adjustment assembly; the air conduction adjustment assembly is connected to the potentiometer (47), and the bone conduction adjustment assembly is connected to the sliding rheostat (48); By rotating the adjustment knob (49), the resistances of the potentiometer (47) and the sliding rheostat (48) are synchronously adjusted through the air conduction adjustment assembly and the bone conduction adjustment assembly, so that the volume adjustment of the air conduction and the bone conduction sound collection is synchronously realized.

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