Feed-forward wireless noise reduction earphone structure and wireless Bluetooth earphone

Abstract

The invention provides a feed-forward type wireless noise reduction earphone structure and a wireless Bluetooth earphone. The feed-forward type wireless noise reduction earphone structure comprises an earphone shell module and a noise reduction processing module. The earphone shell module is composed of a noise reduction turbulent flow assembly, an in-ear shell, an L-shaped shell and an upper cover shell, the upper cover shell covers the L-shaped shell, the in-ear shell abuts against the L-shaped shell, and the L-shaped shell is provided with a device containing cavity used for fixing the noise reduction processing module. The top end of the L-shaped shell is provided with a pickup channel, a sound transmission cavity and a turbulent flow cavity, the turbulent flow cavity is communicated with the pickup channel, the pickup channel is communicated with the vertical sound transmission cavity, the noise reduction turbulent flow assembly covers the turbulent flow cavity, and an opening of the sound transmission cavity faces the microphone assembly of the noise reduction processing module. When the earphone is normally worn, the opening of the pickup channel faces the outer side of the human body helix, the main flow direction of external airflow can be avoided, and wind noise interference is reduced. The problem that a large amount of noise is mixed into sound signals due to the fact that a traditional earphone pickup hole is prone to being affected by wind noise is solved, and the microphone assembly can collect purer sound signals.

Description

Technical Field

[0001] This disclosure relates to the technical field of noise-canceling headphones, and in particular to a feedforward wireless noise-canceling headphone structure and a wireless Bluetooth headphone. Background Technology

[0002] As wireless headphone technology continues to develop, noise cancellation has become a key feature for enhancing user experience. Feedforward wireless noise-canceling headphones, a common type, achieve noise cancellation by collecting external sound and generating a reverse noise-canceling signal. Accurate sound collection by the microphone is a prerequisite for effective noise cancellation.

[0003] However, in real-world usage scenarios, wind noise becomes a significant factor affecting the noise cancellation effect and audio quality of headphones. When users use traditional feedforward wireless noise-canceling headphones in windy conditions such as walking, running, or cycling, the microphone holes on the headphones are easily interfered with by external wind noise.

[0004] Furthermore, because traditional headphone designs do not fully consider wind noise, the pickup holes usually lack an effective design to avoid the main direction of external airflow. This means that in windy environments, external airflow directly impacts the pickup holes, causing a large amount of wind noise generated by airflow turbulence to be mixed into the collected sound signal. This severely affects the noise reduction effect of the headphones, reduces the audio quality heard by the user, and makes it difficult to meet the user's demand for high-quality audio. Summary of the Invention

[0005] The purpose of this disclosure is to overcome the shortcomings of the prior art and provide a feedforward wireless noise-canceling headphone structure and a wireless Bluetooth headphone that can reduce wind noise.

[0006] The purpose of this disclosure is achieved through the following technical solution:

[0007] A feedforward wireless noise-canceling headphone structure includes a headphone housing module and a noise-canceling processing module. The headphone housing module includes a noise-canceling turbulence component, an in-ear housing, an L-shaped housing, and a top cover housing. The top cover housing covers the L-shaped housing, the in-ear housing is connected to the L-shaped housing, and the L-shaped housing has a device receiving cavity. The noise-canceling processing module is fixed inside the device receiving cavity.

[0008] The top of the L-shaped housing is provided with a sound pickup channel, a sound transmission cavity, and a turbulence cavity. The turbulence cavity is connected to the sound pickup channel, and the sound pickup channel is connected to the sound transmission cavity. The sound transmission cavity is perpendicular to the sound pickup channel. The noise reduction turbulence component is covered by the turbulence cavity. The noise reduction processing module has a microphone component, and the opening of the sound transmission cavity faces the microphone component.

[0009] The opening of the sound pickup channel is oriented towards the outer side of the human earlobe.

[0010] In one embodiment, the noise reduction and turbulence component includes a first turbulence element and a second turbulence element. The second turbulence element has a noise reduction and sound pickup cavity. The first turbulence element is disposed inside the noise reduction and sound pickup cavity. The second turbulence element covers the turbulence cavity. The second turbulence element has a turbulence hole.

[0011] In one embodiment, the number of the turbulence holes is multiple, and the multiple turbulence holes are spaced apart on the second turbulence element.

[0012] In one embodiment, the first spoiler is a mesh structure.

[0013] In one embodiment, the noise reduction processing module further includes a circuit board, the microphone assembly is fixed to the circuit board, the circuit board has a pickup hole that communicates with the sound transmission cavity, and the microphone assembly is disposed above the pickup hole so that the sound signal is transmitted to the microphone assembly through the pickup hole.

[0014] In one embodiment, the noise reduction module further includes an annular buffer cotton with a sound transmission hole that is connected to the pickup hole and the sound transmission cavity. One end face of the annular buffer cotton abuts against the circuit board, and the other end face of the annular buffer cotton abuts against the L-shaped housing.

[0015] In one embodiment, the diameter of the sound transmission aperture is equal to the diameter of the pickup aperture.

[0016] In one embodiment, the L-shaped housing is provided with a limiting member, the limiting member being connected to the inner wall of the L-shaped housing, and a portion of the ear-in housing abuts against the limiting member.

[0017] In one embodiment, the earphone housing module further includes a protective cover plate, which covers the noise reduction processing module and is disposed between the upper housing and the noise reduction processing module.

[0018] This application also provides a wireless Bluetooth headset, including the feedforward wireless noise-canceling headset structure described in any embodiment.

[0019] Compared with the prior art, this disclosure has at least the following advantages:

[0020] The aforementioned feedforward wireless noise-canceling headphone structure, by designing the pickup channel opening to face outwards towards the outer helix of the ear and avoid the main direction of external airflow, prevents users from experiencing wind noise interference, a problem common in traditional headphones, when walking, running, or cycling. This reduces the interference of external wind noise on the pickup channel, allowing the microphone assembly to capture a cleaner sound signal. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this disclosure and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of a feedforward wireless noise-canceling headphone structure according to an embodiment.

[0023] Figure 2 for Figure 1 A partially exploded view of the feedforward wireless noise-canceling headphone structure is shown.

[0024] Figure 3 for Figure 1 Another exploded view of the feedforward wireless noise-canceling headphone structure shown;

[0025] Figure 4 for Figure 1 Another schematic diagram of the feedforward wireless noise-canceling headphone structure is shown.

[0026] Figure 5 for Figure 1 Another schematic diagram of the feedforward wireless noise-canceling headphone structure is shown. Detailed Implementation

[0027] To facilitate understanding of this disclosure, a more complete description will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the present disclosure. However, this disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure.

[0028] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0029] Unless otherwise defined, 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 disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] To better understand the technical solutions and beneficial effects of this disclosure, the following detailed description is provided in conjunction with specific embodiments:

[0031] like Figures 1 to 5 As shown, a feedforward wireless noise-canceling headphone structure 10 according to an embodiment of the present disclosure includes a headphone housing module 100 and a noise-canceling processing module 200. The headphone housing module 100 includes a noise-canceling turbulence component 110, an in-ear housing 120, an L-shaped housing 130 and a top cover housing 140. The top cover housing 140 covers the L-shaped housing 130, the in-ear housing 120 is connected to the L-shaped housing 130, and the L-shaped housing 130 has a device receiving cavity 1301. The noise-canceling processing module 200 is fixed in the device receiving cavity 1301.

[0032] The top of the L-shaped housing 130 is provided with a sound pickup channel 1302, a sound transmission cavity 1303, and a turbulence cavity 1304. The turbulence cavity 1304 is connected to the sound pickup channel 1302, and the sound pickup channel 1302 is connected to the sound transmission cavity 1303. The sound transmission cavity 1303 is perpendicular to the sound pickup channel 1302. The noise reduction turbulence component 110 is covered on the turbulence cavity 1304. The noise reduction processing module 200 has a microphone component 210, and the opening of the sound transmission cavity 1303 faces the microphone component 210.

[0033] When the in-ear shell 120 is worn normally on the human ear, the opening of the pickup channel 1302 faces the outside of the human ear helix, so that the pickup channel 1302 avoids the main flow direction of the external airflow and reduces the interference of external wind noise on the pickup channel 1302.

[0034] In this embodiment, when the earphone is worn normally on the human ear, due to the special design of the L-shaped shell 130, the opening of the pickup channel 1302 faces the outer side of the human ear helix. This means that during earphone use, the main flow direction of external airflow is blocked by the ear helix, and the pickup channel 1302 avoids the main flow direction of external airflow. External sound and airflow first enter the earphone through the pickup channel 1302. Since the turbulence cavity 1304 is connected to the pickup channel 1302, the sound then enters the turbulence cavity 1304. The noise reduction turbulence component 110 covers the turbulence cavity 1304, which can turbulentize the incoming airflow and change the airflow state to reduce wind noise interference caused by turbulence. Then, the sound and airflow processed in the turbulence cavity are transmitted to the sound transmission cavity 1303 through the pickup channel 1302. Since the sound transmission cavity 1303 is perpendicular to the pickup channel 1302, the direction of the sound changes during transmission, further reducing the influence of external interference factors on the sound. The sound transmission cavity 1303 opens towards the microphone assembly 210 of the noise reduction processing module 200. The sound transmitted and preliminarily processed through the above path is ultimately accurately captured by the microphone assembly 210. The noise reduction processing module 200 analyzes and processes the captured sound information to generate a corresponding noise reduction signal, thereby achieving the noise reduction function, avoiding the problem of wind noise interfering with effective audio information, and thus improving audio quality.

[0035] The aforementioned feedforward wireless noise-canceling headphone structure 10, by designing the opening of the pickup channel 1302 to face the outer side of the human ear and avoid the main direction of external airflow, prevents users from experiencing the problem of wind noise interference in traditional headphones, which can easily cause a large amount of noise to be mixed into the collected sound signal, when walking, running, or cycling. This reduces the interference of external wind noise on the pickup channel 1302, allowing the microphone assembly 210 to collect a purer sound signal.

[0036] like Figures 3 to 5 As shown, in one embodiment, the noise reduction and turbulence control assembly 110 includes a first turbulence control element 111 and a second turbulence control element 112. The second turbulence control element 112 has a noise reduction pickup cavity 1101. The first turbulence control element 111 is disposed inside the noise reduction pickup cavity 1101, and the second turbulence control element 112 covers the turbulence cavity 1304. The second turbulence control element 112 has a turbulence hole 1102. In this embodiment, the first turbulence control element 111 and the second turbulence control element 112 cooperate with each other to form a multi-layered turbulence structure, which enhances the turbulence control effect of the noise reduction and turbulence control assembly 110 on the airflow entering the earphone. When external sound and airflow enter the turbulence cavity 1304 through the pickup channel 1302, they are first transmitted to the second turbulence control element 112. The turbulence holes 1102 on the second turbulence component 112 play a role in initially dispersing the airflow, breaking the concentrated airflow into multiple smaller airflows, changing the original flow direction and velocity distribution of the airflow, effectively reducing the turbulence intensity of the airflow, and thus reducing the wind noise caused by airflow turbulence.

[0037] like Figures 3 to 5 As shown, in one embodiment, there are multiple turbulence holes 1102, which are spaced apart from each other on the second turbulence member 112. In this embodiment, the multiple spaced turbulence holes 1102 can disperse the airflow entering the turbulence cavity 1304 from different positions. When the airflow impacts the second turbulence member 112, each turbulence hole 1102 can act as an airflow guiding channel, dividing the concentrated airflow into more fine airflow streams, further consuming the energy of the airflow and reducing the turbulence intensity. Compared with a single turbulence hole, multiple turbulence holes 1102 can handle airflows of different directions and intensities, thereby effectively reducing wind noise caused by airflow turbulence, and thus ensuring that the microphone assembly 210 can collect a purer sound signal.

[0038] like Figures 3 to 5 As shown, in one embodiment, the first baffle 111 is a mesh structure. In this embodiment, the mesh structure has numerous tiny mesh openings. When airflow and sound are initially dispersed by the second baffle 112 and enter the noise reduction pickup cavity 1101 where the first baffle 111 is located, these tiny mesh openings will perform secondary deep turbulence on the airflow and sound. As the airflow passes through the mesh openings, its flow direction changes continuously, and it collides and rubs against the mesh fibers multiple times, causing the turbulence of the airflow to decrease rapidly. This effectively reduces wind noise caused by airflow turbulence, allowing the microphone assembly 210 to collect a purer sound signal.

[0039] like Figure 3 As shown, in one embodiment, the noise reduction processing module 200 further includes a circuit board 220, a microphone assembly 210 fixed to the circuit board 220, and a pickup hole 2201 connected to the sound transmission cavity 1303. The microphone assembly 210 is positioned above the pickup hole 2201 so that the sound signal is transmitted to the microphone assembly 210 through the pickup hole 2201. In this embodiment, the pickup hole 2201 is connected to the sound transmission cavity 1303, and the microphone assembly 210 is precisely positioned above the pickup hole 2201, forming a directional sound acquisition channel. This allows the sound signal to be transmitted directly to the microphone assembly 210 along a specific path, specifically through the sound transmission cavity 1303 and the pickup hole 2201, effectively avoiding interference from ambient noise and ensuring that the microphone assembly 210 can accurately capture the pure sound signal after the internal turbulence processing of the headphones, thereby improving the accuracy and clarity of sound acquisition.

[0040] In another embodiment, a noise reduction processing chip is integrated on the circuit board 220. The sampling input terminal of the noise reduction processing chip is electrically connected to the output terminal of the microphone assembly 210 to perform noise reduction processing on the ambient sound signal collected by the microphone assembly 210. Specifically, based on precise analysis of the sound signal, the noise reduction processing chip uses advanced algorithms to generate a noise reduction signal that is out of phase and matches the amplitude of the noise. When these noise reduction signals are superimposed on the original sound signal, they can effectively cancel out the noise, thereby significantly reducing the interference of ambient noise on the effective audio.

[0041] like Figures 3 to 5 As shown, in one embodiment, the noise reduction processing module 200 further includes an annular buffer cotton 230. The annular buffer cotton 230 has a sound transmission through-hole 2301, which is connected to the pickup hole 2201 and the sound transmission cavity 1303. One end of the annular buffer cotton 230 abuts against the circuit board 220, and the other end abuts against the L-shaped housing 130. In this embodiment, when the headphones are subjected to external vibration or impact, the annular buffer cotton 230 can absorb and disperse these external forces through its own elastic deformation, effectively avoiding damage caused by direct collision between the circuit board 220 and the L-shaped housing 130, thereby improving the stability and durability of the headphone structure. On the other hand, the sound transmission through-hole 2301 serves as a directional sound channel, guiding the sound signal along a specific path to be accurately transmitted to the microphone assembly 210, avoiding sound scattering and distortion during transmission, and realizing efficient transmission of the sound signal between the sound transmission cavity 1303 and the pickup hole 2201.

[0042] like Figure 5 As shown, in one embodiment, the aperture of the sound transmission hole 2301 is equal to the aperture of the pickup hole 2201. In this embodiment, when the aperture of the sound transmission hole 2301 and the aperture of the pickup hole 2201 are equal, a sound transmission channel with consistent aperture is formed. This ensures that the sound signal maintains a relatively stable and uniform transmission state during the process of transmission from the sound cavity 1303 through the sound transmission hole 2301 to the pickup hole 2201, and then to the microphone assembly 210. This prevents sound from being reflected, refracted, or scattered due to changes in the channel aperture, avoiding distortion and attenuation of the sound signal during transmission. This ensures that the sound signal received by the microphone assembly 210 can truly and accurately reflect the characteristics of the original sound, thereby improving the accuracy of sound acquisition.

[0043] like Figure 2As shown, in one embodiment, the L-shaped housing 130 is provided with a limiting member 131, which is connected to the inner wall of the L-shaped housing 130. A portion of the earphone housing 120 abuts against the limiting member 131. In this embodiment, the limiting member 131 provides a clear positioning reference for the installation of the earphone housing 120. During the earphone assembly process, workers can accurately place the earphone housing 120 in the appropriate position based on the position of the limiting member 131, enabling precise alignment between the earphone housing 120 and the L-shaped housing 130. This reduces the time spent on repeated adjustments due to inaccurate positioning and ensures assembly consistency, guaranteeing that the structural precision of each earphone meets design requirements, thereby improving the overall quality stability and assembly efficiency of the product.

[0044] like Figure 2 As shown, in one embodiment, the headphone housing module 100 further includes a protective cover 150, which covers the noise reduction processing module 200 and is positioned between the upper housing 140 and the noise reduction processing module 200. In this embodiment, the protective cover 150 serves as a connecting transition component between the upper housing 140 and the noise reduction processing module 200, making the entire structure more compact and stable. Specifically, the protective cover 150 forms a tight fit with the upper housing 140 and the noise reduction processing module 200, reducing looseness and wobbling between structures. This avoids abnormal noises caused by structural loosening, ensures the relative positional accuracy between the internal components of the headphones, and ensures that the transmission and processing of sound signals are not affected by structural changes, thereby maintaining the stability of the headphone's audio performance.

[0045] Furthermore, during actual use of the headphones, as the airflow from the surrounding environment blows across the microphone pickup hole and surrounding structures, the chaotic airflow forms irregular turbulence outside the pickup hole. This turbulence continuously impacts the microphone diaphragm, causing it to vibrate irregularly and non-periodically, converting mechanical energy into wind noise electrical signals with irregular amplitude fluctuations. These wind noise electrical signals are amplified by the headphone chip and transmitted to the in-ear speaker, where they are converted back into sound waves, ultimately producing noisy wind noise. To address the above problems, in one embodiment, such as... Figures 2 to 5As shown, since the sound transmission cavity 1303 is perpendicular to the sound pickup channel 1302, the sound transmission cavity 1303 and the sound pickup channel 1302 form an L-shaped channel in structure. When external airflow enters the headphones, this L-shaped channel can guide the airflow to change its flow direction, reducing the turbulence generated by the airflow directly impacting the microphone components inside the headphones, thereby reducing wind noise to a certain extent. In order to further reduce the generation of wind noise, in another embodiment, the noise reduction turbulence component 110 includes a first turbulence element 111 and a second turbulence element 112, wherein the first turbulence element 111 is a noise reduction mesh, the second turbulence element 112 is a noise reduction cover, the noise reduction cover has a noise reduction sound pickup cavity 1101, the noise reduction mesh is disposed in the noise reduction sound pickup cavity 1101, the noise reduction cover is disposed in the turbulence cavity 1304, and the noise reduction cover has a plurality of turbulence holes 1102. When airflow passes through the noise reduction cover, the structure of multiple turbulence holes 1102 can disperse the airflow, allowing the airflow to pass through the noise reduction cover more evenly, further reducing the turbulence intensity of the airflow to reduce wind noise.

[0046] Furthermore, the noise-reducing mesh includes a plastic ring 1111 and a metal mesh 1112. The metal mesh 1112 has multiple mesh openings, which serve as a secondary flow divider. After the airflow is initially dispersed by the noise-reducing cover, it is further divided by the noise-reducing mesh, making the airflow more delicate and stable, thus further reducing wind noise. Specifically, the aperture of the turbulence holes 1102 of the noise-reducing cover is larger than the aperture of the mesh openings of the metal mesh 1112. When sound waves and airflow pass through the turbulence holes 1102, due to the larger aperture of the turbulence holes 1102 on the noise-reducing cover, the airflow can pass through more smoothly and is initially dispersed into multiple relatively large airflow streams. At the same time, it changes the original concentrated flow direction and high-speed state of the airflow, reducing the turbulence intensity of the airflow. Then, the initially dispersed airflow enters the area of ​​the metal mesh 1112 fixed by the plastic ring 1111. The dense and fine mesh openings on the metal mesh 1112 perform a secondary fine flow divider on the airflow, causing the larger airflow streams to be divided into countless smaller airflow streams. As these tiny airflows pass through the mesh, their flow direction undergoes subtle changes, frequently colliding and rubbing against the metal mesh wires. This causes the airflow's energy to gradually dissipate, resulting in a smoother and slower flow. After two stages of flow splitting and energy consumption, the turbulent components are significantly reduced, and wind noise is substantially decreased. Finally, the relatively stable sound waves and airflow, processed by the noise reduction and turbulence reduction component 110, are transmitted from the turbulence cavity 1304 to the sound pickup channel 1302, then through the sound pickup channel 1302 to the sound transmission cavity 1303, and finally through the sound transmission cavity 1303 to the microphone assembly 210. This provides the microphone assembly 210 with a cleaner sound signal and effectively avoids wind noise interference with audio quality. In addition, under the same unit area, the number of mesh holes of the metal mesh 1112 is greater than the number of noise reduction cover bleed holes 1102. Compared with the case where the number of mesh holes of the metal mesh 1112 is the same as the number of noise reduction cover bleed holes 1102, the smaller mesh hole design is also conducive to improving the dustproof effect of the noise reduction bleed component 110, thereby preventing dust from entering the inside of the headphones and affecting the headphone performance.

[0047] Understandably, in existing technologies, to avoid sound signal transmission loss due to a loose connection between the noise-canceling cover and the noise-canceling mesh, a special connection design is used. Specifically, the noise-canceling cover and the noise-canceling mesh are connected and fixed by elastic rubber clips, which fit into pre-set grooves on the edges of both the cover and the mesh. Alternatively, they can be connected and fixed with adhesive. However, during long-term use, these connection methods are prone to problems: for example, under the influence of various vibrations and environmental temperature changes during long-term use of headphones, the elasticity of the rubber clips or the stickiness of the adhesive will gradually decrease, and the originally tight connection will become loose, resulting in relative displacement between the noise-canceling cover and the mesh. This displacement will disrupt the original airflow dispersion structure between them, preventing the airflow from being dispersed and secondary diverted as designed, thus reducing the turbulence effect and weakening the noise-canceling function.

[0048] Therefore, in one embodiment, such as Figure 4 and Figure 5 As shown, the plastic ring 1111 and the metal mesh 1112 are injection molded in a mold. Specifically, the plastic ring 1111 and the metal mesh 1112 are formed using an in-mold injection molding structure. Meanwhile, the metal mesh holes on the metal mesh 1112 are obtained by stamping. Furthermore, the plastic ring 1111 is ultrasonically welded to the noise reduction cover. Specifically, the plastic ring 1111 and the bottom of the opening of the noise reduction cover are connected using an ultrasonic welding process. The ultrasonic welding process utilizes high-frequency vibration waves transmitted to the surfaces of the two objects to be welded, and under pressure, the surfaces rub against each other to form a fusion between molecular layers. The above welding method forms a tight integral connection between the plastic ring 1111 and the bottom of the noise-canceling cover opening. Compared to traditional glue connections, this significantly enhances the stability of the connection between the plastic ring 1111 and the bottom of the noise-canceling cover opening, preventing loosening during long-term use of the headphones. This ensures the stability of the relative position between the noise-canceling cover and the plastic ring 1111, maintaining the original airflow dispersion structure and guaranteeing the durability of the turbulence effect, thus continuously delivering excellent noise cancellation. Furthermore, the ultrasonic welding process achieves a seamless connection between the plastic ring 1111 and the bottom of the noise-canceling cover opening, effectively preventing airflow leakage at the connection point. This excellent sealing ensures that sound signals and airflow can be fully dispersed and secondary-diverted through the turbulence holes 1102 and the mesh of the metal mesh 1112 in sequence, preventing some airflow from entering the headphones directly without proper treatment due to airflow leakage. This ensures the overall airflow processing effect of the noise-canceling turbulence assembly 110.

[0049] Specifically, in-mold injection molding involves pre-placing the metal mesh 1112 inside the injection mold, then injecting molten plastic material into the mold, causing the plastic ring 1111 and the metal mesh 1112 to fuse directly into a single structure within the mold (i.e., the plastic ring 1111 wraps around the edge of the metal mesh 1112). This allows the plastic ring 1111 and the metal mesh 1112 to form a molecular-level bond, avoiding the problems of "adhesive aging and detachment" and "loosening and displacement of clips" that exist in traditional connection methods. At the same time, it avoids the problem of the coaxiality of the plastic ring and the metal mesh needing to be manually calibrated in traditional assembly methods, which is prone to deviation. This improves the connection accuracy of the plastic ring 1111 and the metal mesh 1112, ensuring the long-term maintenance of the secondary flow distribution effect of the metal mesh.

[0050] To further reduce the loss of acoustic signals within the noise-reducing pickup cavity 1101, in another embodiment, a UV adhesive layer is provided on the inner wall of the noise-reducing pickup cavity 1101. This UV adhesive layer is bonded to the plastic ring 1111. Specifically, a UV-curable coating is uniformly sprayed onto the inner wall of the noise-reducing pickup cavity 1101 using a spraying device. After spraying, the noise-reducing pickup cavity 1101 with the uncured coating is placed in a UV curing device. The UV curing device emits high-intensity ultraviolet light. When the ultraviolet light irradiates the inner wall of the noise-reducing pickup cavity 1101 coated with the UV-curable coating, the photoinitiator in the coating absorbs the energy of the ultraviolet light and undergoes a chemical reaction, generating free radicals and initiating a polymerization reaction between the monomers and prepolymers in the coating. This causes the coating molecules to cross-link, forming a three-dimensional network structure of polymer. As the polymerization reaction continues, the coating gradually changes from a liquid to a solid state, thus completing the curing process. Furthermore, the aforementioned UV-curable smooth coating has a smooth surface, which can reduce the loss of acoustic waves entering the noise-reducing pickup cavity 1101.

[0051] Specifically, such as Figure 5As shown, when the sound wave signal and airflow enter the noise-canceling pickup cavity 1101 through the turbulence hole 1102 of the noise-canceling cover, the sound wave will propagate within the cavity. The inner wall of a conventional uncoated cavity is relatively rough, causing multiple reflections of the sound wave during propagation. Each reflection results in a portion of the sound energy being converted into heat or other forms of energy, leading to a weakening of the sound signal received by the microphone assembly 210. However, the UV-cured smooth coating has a smooth surface. When the sound wave reflects off the coating surface, the reflection direction is more regular, reducing energy dispersion caused by diffuse reflection. This reduces sound wave loss during reflection, allowing more sound wave energy to be transferred to the microphone assembly 210, thus improving the sound signal acquisition strength. Therefore, the UV-cured smooth coating enables the sound wave to propagate along a relatively fixed path within the cavity, reducing sound wave reflection and ensuring the purity and accuracy of the sound signal, enabling the microphone assembly 210 to acquire a clearer and more realistic sound signal.

[0052] This application also provides a wireless Bluetooth headset, including a feedforward wireless noise-canceling headset structure 10 according to any embodiment. In this embodiment, when the headset is normally worn on the human ear, due to the special design of the L-shaped shell 130, the opening of the pickup channel 1302 faces the outer side of the human earlobe, so that during the use of the headset, the main flow direction of external airflow is blocked by the earlobe, and the pickup channel 1302 avoids the main flow direction of external airflow. External sound and airflow first enter the headset through the pickup channel 1302. Since the turbulence cavity 1304 is connected to the pickup channel 1302, the sound then enters the turbulence cavity 1304. The noise-canceling turbulence component 110 is covered on the turbulence cavity 1304, which can turbulentize the incoming airflow and change the airflow state to reduce wind noise interference caused by turbulence. Then, the sound and airflow processed in the turbulence cavity are transmitted to the sound transmission cavity 1303 through the pickup channel 1302. Since the sound transmission cavity 1303 is perpendicular to the pickup channel 1302, the direction of the sound changes during transmission, further reducing the influence of external interference factors on the sound. The sound transmission cavity 1303 opens towards the microphone assembly 210 of the noise reduction processing module 200. The sound transmitted and preliminarily processed through the above path is ultimately accurately captured by the microphone assembly 210. The noise reduction processing module 200 analyzes and processes the captured sound information to generate a corresponding noise reduction signal, thereby achieving the noise reduction function, avoiding the problem of wind noise interfering with effective audio information, and thus improving audio quality.

[0053] Compared with the prior art, this disclosure has at least the following advantages:

[0054] The aforementioned feedforward wireless noise-canceling headphone structure 10, by designing the opening of the pickup channel 1302 to face the outer side of the human ear and avoid the main direction of external airflow, prevents users from experiencing the problem of wind noise interference in traditional headphones, which can easily cause a large amount of noise to be mixed into the collected sound signal, when walking, running, or cycling. This reduces the interference of external wind noise on the pickup channel 1302, allowing the microphone assembly 210 to collect a purer sound signal.

[0055] The embodiments described above are merely illustrative of several implementations of this disclosure, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the disclosed patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the protection scope of this disclosure. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A feedforward wireless noise-canceling headphone structure, comprising a headphone housing module and a noise-canceling processing module, wherein the headphone housing module includes a noise-canceling turbulence component, an in-ear housing, an L-shaped housing, and a top cover housing, the top cover housing covering the L-shaped housing, the in-ear housing being connected to the L-shaped housing, the L-shaped housing having a device receiving cavity, and the noise-canceling processing module being fixed within the device receiving cavity, characterized in that... The top of the L-shaped housing is provided with a sound pickup channel, a sound transmission cavity, and a turbulence cavity. The turbulence cavity is connected to the sound pickup channel, the sound pickup channel is connected to the sound transmission cavity, the sound transmission cavity is perpendicular to the sound pickup channel, the noise reduction turbulence component is covered on the turbulence cavity, the noise reduction processing module has a microphone component, and the opening of the sound transmission cavity faces the microphone component. The opening of the sound pickup channel is oriented towards the outer side of the human earlobe.

2. The feedforward wireless noise-canceling headphone structure according to claim 1, characterized in that, The noise reduction and turbulence component includes a first turbulence element and a second turbulence element. The second turbulence element has a noise reduction and sound pickup cavity. The first turbulence element is disposed inside the noise reduction and sound pickup cavity. The second turbulence element covers the turbulence cavity. The second turbulence element has a turbulence hole.

3. The feedforward wireless noise-canceling headphone structure according to claim 2, characterized in that, The number of the turbulence holes is multiple, and the multiple turbulence holes are spaced apart on the second turbulence element.

4. The feedforward wireless noise-canceling headphone structure according to claim 2, characterized in that, The first aerodynamic component has a mesh structure.

5. The feedforward wireless noise-canceling headphone structure according to claim 1, characterized in that, The noise reduction processing module also has a circuit board, the microphone assembly is fixed to the circuit board, the circuit board has a pickup hole, the pickup hole is connected to the sound transmission cavity, and the microphone assembly is disposed above the pickup hole so that the sound signal is transmitted to the microphone assembly through the pickup hole.

6. The feedforward wireless noise-canceling headphone structure according to claim 5, characterized in that, The noise reduction module also includes an annular buffer cotton, which has a sound transmission hole that is connected to the pickup hole and the sound transmission cavity. One end of the annular buffer cotton abuts against the circuit board, and the other end of the annular buffer cotton abuts against the L-shaped housing.

7. The feedforward wireless noise-canceling headphone structure according to claim 6, characterized in that, The diameter of the sound transmission hole is equal to the diameter of the sound pickup hole.

8. The feedforward wireless noise-canceling headphone structure according to claim 1, characterized in that, The L-shaped housing is provided with a limiting member, which is connected to the inner wall of the L-shaped housing, and a portion of the ear-insertion housing abuts against the limiting member.

9. The feedforward wireless noise-canceling headphone structure according to claim 1, characterized in that, The earphone housing module also includes a protective cover plate, which is disposed on the noise reduction processing module and between the upper housing and the noise reduction processing module.

10. A wireless Bluetooth headset, characterized in that, Includes the feedforward wireless noise-canceling headphone structure as described in any one of claims 1 to 9.

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