A noise-reducing boom and headphones

Abstract

The utility model discloses a kind of noise reduction microphone stem and headset, wherein noise reduction microphone stem includes first shell, second shell, the first microphone for collecting talking sound, the second microphone for collecting environmental sound;The first microphone and the second microphone are located between first shell and second shell, and the first microphone is obliquely arranged at the first end of the first shell.According to the noise reduction microphone stem and headset of the utility model, the first microphone obliquely arranged at the end of microphone stem reduces the interference of wind noise generated when people exhale on the quality of conversation, while maintaining the sensitivity of voice pickup, with the advantages of effectively reducing wind noise interference in the process of conversation, improving the sensitivity of voice pickup.

Description

Technical Field

[0001] This utility model relates to the field of audio equipment technology, and more specifically, to a noise-canceling microphone and headphones. Background Technology

[0002] Existing noise-canceling headphones suffer from significant wind noise interference during calls. When a user wears the headphones for a call, the microphone is typically positioned directly above the user's mouth, exposing it to the airflow generated by the user's exhalation. Because the exhaled airflow is fast and turbulent, it creates irregular pressure fluctuations on the microphone diaphragm surface, generating noticeable wind noise. This wind noise not only interferes with the clarity of the voice but also affects the processing effectiveness of noise-canceling algorithms, leading to a decline in call quality. Furthermore, continuous wind noise stimulation increases user auditory fatigue and reduces wearing comfort. Current market solutions often use windproof foam or reposition the microphone to alleviate this problem, but these methods often affect the sensitivity of voice pickup or cause inconvenience when wearing the headphones. Utility Model Content

[0003] The purpose of this invention is to provide a noise-canceling microphone and headphones that can effectively reduce wind noise generated during exhalation and improve noise reduction and sound reception.

[0004] This utility model is achieved through the following technical solution: a noise-canceling microphone rod is provided, the noise-canceling microphone rod includes a first housing, a second housing, a first microphone for collecting call sound, and a second microphone for collecting ambient sound; the first microphone and the second microphone are disposed between the first housing and the second housing, and the first microphone is inclinedly disposed at the first end of the first housing.

[0005] In some technical solutions, the angle between the first microphone setting direction and the first end face is 30 to 60 degrees.

[0006] In some technical solutions, the angle between the first microphone setting direction and the first end face is 45 degrees.

[0007] In some technical solutions, the horizontal distance between the first microphone and the second microphone is 8 to 15 centimeters.

[0008] In some technical solutions, the horizontal distance between the first microphone and the second microphone is 10 centimeters.

[0009] In some technical solutions, the first housing is provided with a first mounting groove for mounting the first microphone and a second mounting groove for mounting the second microphone; the first mounting groove is inclined.

[0010] In some technical solutions, the first housing has a wire groove in the middle, and the two sides of the wire groove are adhesive grooves. The second housing has adhesive ridges that cooperate with the adhesive grooves.

[0011] In some technical solutions, the second mounting groove has an opening corresponding to the location of the wire groove.

[0012] In some technical solutions, a fitting groove is provided between the first mounting groove and the first end, and the second housing is provided with fitting teeth corresponding to the fitting groove.

[0013] On the other hand, this utility model also provides a headset, which includes the aforementioned noise-canceling microphone.

[0014] The beneficial effects of this utility model include at least the following: In the noise-canceling microphone pole of this utility model, the first microphone collects the voice during the call and the second microphone collects the ambient sound, thereby reducing ambient noise; by tilting the first microphone to the first end of the first housing, the microphone is prevented from being directly exposed to the user's exhaled airflow, thereby reducing wind noise interference with call quality, while maintaining voice pickup sensitivity and wearing comfort. It has the advantages of effectively reducing wind noise interference during the call, improving voice pickup sensitivity and maintaining wearing comfort. Attached Figure Description

[0015] Figure 1 This is an exploded view of a noise-reducing microphone according to an embodiment of the present invention;

[0016] Figure 2 This is a perspective view of the first housing according to an embodiment of the present utility model;

[0017] Figure 3 This is a side view of the first housing according to an embodiment of the present invention;

[0018] Figure 4 It is based on Figure 3 An enlarged schematic diagram of region A;

[0019] Figure 5 This is a perspective view of the second housing according to an embodiment of the present utility model;

[0020] Figure 6 This is a perspective view of a headset according to an embodiment of the present invention. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0022] In existing technologies, noise-canceling headphones typically employ a microphone layout directly facing the user's mouth during calls. When a user wears the headphones for voice communication, the airflow from their exhalation directly impacts the microphone diaphragm, creating low-frequency wind noise interference. This physical noise is difficult to completely eliminate using electronic noise reduction algorithms, leading to a decline in call quality. Traditional solutions often focus on improving noise reduction algorithms or adding windproof structures, but algorithm optimization suffers from processing delays, and physical protective structures increase device size and affect wearing comfort.

[0023] Therefore, this application provides a noise-reducing microphone 10. Please refer to [link / reference]. Figure 1 The noise-canceling microphone 10 includes a first housing 1, a second housing 2, a first microphone 3 for collecting call sound, and a second microphone 4 for collecting ambient sound; the first microphone 3 and the second microphone 4 are disposed between the first housing 1 and the second housing 2, and the first microphone 3 is inclinedly disposed at the first end 11 of the first housing 1.

[0024] The first housing 1 and the second housing 2 can be made of injection-molded ABS engineering plastic, and the two together form a sealed cavity. The first end 11 of the first housing 1, near the user's voice output, forms an installation space to accommodate the first microphone 3. The second microphone 4 is located at the second end of the microphone boom near the headphone body and is used to capture the ambient noise spectrum. The tilted installation means that the microphone diaphragm plane is installed at a specific angle to the end face of the housing. This can be achieved by injection molding a mounting groove with a slope, so that the microphone pickup direction deviates from the main path of human exhalation.

[0025] Specifically, the first microphone 3 is tilted so that its pickup axis is offset from directly in front of the mouth. When the user exhales, the airflow flows tangentially along the surface of the housing, avoiding direct impact on the microphone diaphragm. The second microphone 4 captures ambient noise, creating a time-domain and frequency-domain difference with the speech signal collected by the first microphone 3. The spatial separation design of the two microphones reduces sound wave interference, and together with noise reduction algorithms, can accurately distinguish between target speech and ambient noise. The tilted mounting structure at the end of the housing changes the traditional vertical layout, physically blocking wind noise generation while maintaining speech clarity. Compared to designs that add windproof nets or complex filtering circuits, the tilted layout requires no additional physical space and maintains the aesthetics of the microphone boom.

[0026] Through the above technical solutions, this application effectively reduces wind noise interference caused by exhaled airflow during calls, improving the signal-to-noise ratio of the voice signal. The tilted microphone layout maintains voice pickup sensitivity while avoiding low-frequency noise caused by direct airflow impact. The dual-microphone system achieves physical isolation of voice and ambient sound acquisition, providing a more accurate reference signal for the noise reduction algorithm. The housing structure optimizes functionality while maintaining the device's compactness and assembly reliability.

[0027] In some embodiments, the angle between the first microphone 3 and the end face of the first end 11 is 30 to 60 degrees.

[0028] In some embodiments, the angle between the first microphone 3 and the end face of the first end 11 is 45 degrees.

[0029] Please see Figure 3 The angle between the first microphone 3 and the end face of the first end 11 refers to the angle α formed by the central axis of the microphone relative to the end face of the housing. The angle α is between 30 and 60 degrees, preferably 45 degrees. At this angle, wind noise interference caused by the direct impact of exhaled airflow on the microphone is effectively reduced, while maintaining clear pickup of voice calls, thereby improving call quality. The optimized design of the microphone tilt angle suppresses noise sources while avoiding loss of voice signal sensitivity, achieving a balance between noise reduction and voice fidelity. In addition, this angle optimizes the matching relationship between the sound wave incident direction and the microphone's sensitive area, avoiding the problem of voice signal attenuation due to an excessively large angle or insufficient wind noise resistance due to an excessively small angle.

[0030] In some embodiments, the horizontal distance between the first microphone 3 and the second microphone 4 is 8 to 15 centimeters.

[0031] In some embodiments, the horizontal distance between the first microphone 3 and the second microphone 4 is 10 centimeters.

[0032] Please see Figure 3The horizontal distance refers to the distance L between the two microphones in the horizontal projection direction, with the length of L set to 8 to 15 centimeters, preferably 10 centimeters. This distance range is configured to maintain an effective acoustic signal acquisition range while avoiding near-field sound wave coupling. The lower limit of this range prevents sound wave phase interference caused by the two microphones being too close, while the upper limit ensures that the ambient sound acquisition device and the human voice acquisition device are in the same sound field domain. Simultaneously, when the first microphone 3 and the second microphone 4 maintain this distance, the sound wave signals received by the two devices exhibit identifiable differences in time difference, phase difference, and amplitude difference, providing effective sound field feature data for the noise reduction algorithm. Compared with existing technologies, traditional noise-canceling headphones typically place the ambient sound acquisition device on the headphone body or in-line control, resulting in a distance of more than 20 centimeters between it and the human voice acquisition device. This excessively large distance causes the two microphones to be in different sound field domains, making it impossible for the algorithm to accurately distinguish between ambient noise and human voice signals. This solution, by limiting the distance range to 8 to 15 centimeters, ensures both physical noise reduction effect and the effectiveness of acoustic feature data.

[0033] like Figure 2 As shown, in some embodiments, the first housing 1 is provided with a first mounting groove 12 for mounting the first microphone 3 and a second mounting groove 13 for mounting the second microphone 4; the first mounting groove 12 is inclined. A first sound-receiving hole 14 is provided on the first housing 1 corresponding to the position of the first microphone 3, and the first sound-receiving hole 14 is located at the bottom of the first mounting groove 12. A second sound-receiving hole 21 is provided on the second housing 2 corresponding to the position of the second microphone 4. A positioning ridge 22 is also provided on the second housing 2 corresponding to the position of the first microphone 3, which further secures the first microphone 3 in the first mounting groove 12, preventing displacement that could affect the sound reception.

[0034] The first mounting groove 12 and the second mounting groove 13 refer to the groove structures set on the first housing 1 for fixing the first microphone 3 and the second microphone 4. Specifically, they can be formed by injection molding to match the shape of the microphone. The groove walls circumferentially limit the microphone, so that the microphone is precisely constrained during assembly and avoids positional displacement due to vibration or external force. The first mounting groove 12 is inclined, meaning that the axis of the groove forms a non-perpendicular angle with the end face of the first housing 1. This can be achieved by adjusting the inclination angle of the groove forming mold, so that the first microphone 3 installed in the groove has a fixed sound pickup direction and avoids the user's exhalation airflow path.

[0035] Please see Figure 2 and Figure 5 In some embodiments, the first housing 1 has a wire groove 15 in the middle, and glue grooves 16 are provided on both sides of the wire groove 15. The second housing 2 has glue ribs 23 that cooperate with the glue grooves 16.

[0036] The cable groove 15 refers to a recessed structure extending along the length of the housing, used to accommodate and secure the cable connected to the microphone assembly. The adhesive groove 16 refers to the recessed structures located on both sides of the cable groove 15, used to physically engage with the adhesive ridge 23 of the second housing 2. The adhesive ridge 23 refers to a protruding structure matching the shape of the adhesive groove 16, used to embed into the adhesive groove 16 to form a double-sealed interface.

[0037] Specifically, the centrally located cable tray 15 concentrates the cables within the central area of ​​the housing, preventing uneven stress on both sides of the housing due to cable dispersion. The interlocking relationship between the adhesive groove 16 and the adhesive ridge 23 forms the first mechanical seal barrier, while the adhesive filler tightly bonds the first housing 1 and the second housing 2 together. The symmetrically distributed adhesive grooves 16 on both sides of the cable tray 15 ensure uniform pressure distribution when the housing is closed, and increase the contact area between the first housing 1 and the second housing 2 during slow-drying adhesive bonding, making the microphone structure more stable.

[0038] In some embodiments, the second mounting groove 13 is provided with an opening corresponding to the position of the wire groove 15.

[0039] Specifically, the opening design of the second mounting slot 13 allows the cable of the first microphone 3 to extend directly from the cable groove 15 through the area of ​​the second mounting slot 13 and connect to the headphone body, avoiding bending or accumulation of the cable at the connection point of the slot. The position of the opening is aligned with the direction of the cable groove 15, ensuring that the cable can be stably arranged along the preset path, improving assembly efficiency, and ensuring the reliability of the fixation between the microphone and the housing.

[0040] Please see Figure 2 and Figure 5 In some embodiments, a fitting groove 17 is provided between the first mounting groove 12 and the first end 11, and the second housing 2 is provided with fitting teeth 24 corresponding to the fitting groove 17.

[0041] The fitting groove 17 refers to the recessed structure formed between the end of the first housing 1 and the first mounting groove 12, and the fitting tooth 24 refers to the protruding structure set on the edge of the second housing 2. The cooperation between the fitting groove 17 and the fitting tooth 24 further enhances the connection strength between the two housings. On the other hand, it increases the contact area between the first housing 1 and the second housing 2 when they are glued together with slow-drying adhesive, further enhancing the connection strength between the two housings, especially at the first end 11. This prevents the tilt angle of the first microphone 3 from shifting due to loose housing connection, thereby maintaining its directional sound reception stability relative to the mouth and reducing wind noise interference with call quality.

[0042] like Figure 6As shown, in another aspect, this application embodiment also provides a headset, which includes a headset body 20 and a noise-canceling microphone 10 connected to the headset body 20. The noise-canceling microphone 10 is rotatably mounted on the headset body 20. When in use, the headset is worn on the head and the noise-canceling microphone 10 is rotated to the user's mouth for voice calls.

[0043] In the description of this utility model, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0044] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0045] In the description of the embodiments of this utility model, it should be understood that the orientation or positional relationship indicated in the embodiments of this application is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of facilitating the description of the embodiments of this utility model and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the embodiments of this utility model.

[0046] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A noise-canceling microphone, characterized in that, The noise-canceling microphone includes a first housing, a second housing, a first microphone for collecting call sound, and a second microphone for collecting ambient sound; the first microphone and the second microphone are disposed between the first housing and the second housing, and the first microphone is inclinedly disposed at the first end of the first housing; The angle between the first microphone setting direction and the first end face is 30 to 60 degrees; The first housing is provided with a first mounting groove for mounting the first microphone and a second mounting groove for mounting the second microphone; the first mounting groove is inclined. A fitting groove is provided between the first mounting groove and the first end, and a fitting tooth corresponding to the fitting groove is provided on the second housing; The second housing is also provided with a positioning ridge corresponding to the position of the first microphone.

2. The noise-reducing microphone according to claim 1, characterized in that, The angle between the first microphone setting direction and the first end face is 45 degrees.

3. The noise-reducing microphone according to claim 1, characterized in that, The horizontal distance between the first microphone and the second microphone is 8 to 15 centimeters.

4. The noise-reducing microphone according to claim 3, characterized in that, The horizontal distance between the first microphone and the second microphone is 10 centimeters.

5. The noise-reducing microphone according to claim 1, characterized in that, The first housing has a wire groove in the middle, and adhesive grooves are provided on both sides of the wire groove. The second housing has adhesive ridges that cooperate with the adhesive grooves.

6. The noise-reducing microphone according to claim 5, characterized in that, The second mounting groove has an opening corresponding to the position of the wire groove.

7. A type of over-ear headphone, characterized in that, The headphones include the noise-canceling microphone as described in any one of claims 1-6.

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