Mechanically adjustable acoustic chamber microphone

Abstract

The application discloses a mechanical adjustable sound cavity microphone, which comprises a shell, a microphone assembly arranged on the inner side of the sound cavity hole at the bottom of the shell, a microphone, a sound cavity, a microphone position adjusting assembly, a supporting rod, a limiting buckle, a supporting cup, a rack, a driven gear, an adjusting gear, an adjusting wheel and a rack rail bottom plate. The position of the microphone in the sound cavity is adjusted through mechanical gear cooperation, the sound cavity can be adjusted and optimized according to the voice frequency characteristics of the user, the sound cavity frequency response characteristics of specific users are optimized, the user adjusts the microphone sound cavity structure while reading a piece of sample text according to the prompt, and the structure is solidified when the best frequency response characteristics are obtained, so that the recognition and interaction effect of the voice is greatly improved. The sound cavity can also be automatically adjusted through the adjustment of the driving device, the adjustment of the driving device is controlled through software and a central control system, the sound cavity can be intelligently and automatically adjusted, and the voice recognition of specific users can be adapted.

Description

Technical Field

[0001] This invention relates to the field of microphone technology, and more specifically, to a mechanically adjustable acoustic cavity microphone. Background Technology

[0002] Microphones are commonly used to collect voice data in various electronic products (mobile phones, PCs, tablets). People of different genders and ages have significant differences in voice frequency characteristics. However, the frequency response characteristics of microphones are set at the factory and cannot be adjusted according to different users, which often affects voice recognition and interaction between any devices.

[0003] In devices with microphones, the frequency response characteristics are not only determined by the microphone itself, but also by the design of the sound guide cavity on the device. The overall audio input effect of the system is determined by both the sound guide cavity and the microphone itself. A sound guide cavity that can be adjusted and optimized according to the user's voice frequency characteristics can greatly improve the effect of voice recognition and interaction. Summary of the Invention

[0004] The purpose of this invention is to address the above-mentioned shortcomings by providing a mechanically adjustable acoustic cavity microphone, which aims to solve the technical problems of non-adjustable frequency response characteristics and low accuracy of speech recognition for specific individuals in the prior art.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] The present invention provides a mechanically adjustable acoustic cavity microphone, including a housing and a microphone assembly disposed inside the acoustic cavity hole at the bottom of the housing. The microphone assembly includes a microphone head, an acoustic cavity, and a microphone head position adjustment component. The front end of the acoustic cavity is fixedly mounted against the inside of the acoustic cavity hole at the bottom of the housing. The microphone head is disposed at the center of the front end of the microphone head position adjustment component, and the front end of the microphone head position adjustment component is embedded against the rear end of the acoustic cavity.

[0007] Furthermore, the sound cavity is a spherical cavity with openings at the top and bottom.

[0008] Furthermore, the microphone position adjustment assembly includes a support rod, a limiting buckle, a support cup, a rack, a driven gear, an adjusting gear, an adjusting wheel, and a rack track base plate. The front end of the limiting buckle is embedded and fixed to the rear end of the sound cavity. The front end of the support rod, after fixing the microphone, moves through the middle through hole of the limiting buckle. The rear end of the support rod is fixed to the middle of the support cup. The support cup is movably embedded in the middle of the rear end of the limiting buckle with a movement gap. The rack is fixed to the middle of the rear side of the support cup. The rack is movably set on the corresponding track of the rack track base plate. The adjusting gear is fixed at the center of the adjusting wheel below the rack. The adjusting gear meshes with the driven gear, and the driven gear meshes with the rack. The driven gear and the adjusting gear are rotatably mounted on the corresponding rotating shaft of the rack track base plate.

[0009] Furthermore, the microphone position adjustment assembly also includes an elastic wall bracket, which is disposed inside the sound cavity. Its front end abuts against the inside of the sound cavity hole at the bottom of the outer shell, and its rear end is shorter than the depth of the sound cavity to abut against the microphone, limiting the maximum forward movement distance of the microphone.

[0010] Furthermore, the microphone position adjustment assembly also includes an adjustment drive device, which is poweredly connected to the adjustment wheel.

[0011] Compared with existing technologies, the advantages of this invention are: by using mechanical gears to adjust the position of the microphone in the acoustic cavity, the sound guide cavity can be adjusted and optimized according to the user's voice frequency characteristics. This optimization targets the specific user's acoustic cavity frequency response characteristics. As the user reads a sample text as prompted, the microphone's acoustic cavity structure is adjusted, and the optimal frequency response characteristics are then fixed, greatly improving the voice recognition and interaction effects. Alternatively, the adjustment can be driven by a driving device, which, controlled by software and a central control system, enables intelligent and automatic adjustment of the acoustic cavity to adapt to specific user voice recognition needs. Attached Figure Description

[0012] Figure 1 This is a schematic diagram showing the disassembly of a mechanically adjustable acoustic cavity microphone in an embodiment of the present invention.

[0013] The annotations in the attached figures are explained as follows:

[0014] 1 is the outer shell, 2 is the sound cavity hole, 3 is the microphone assembly, 4 is the microphone head, 5 is the sound cavity, 6 is the microphone head position adjustment assembly, 601 is the support rod, 602 is the limit buckle, 603 is the support cup, 604 is the rack, 605 is the driven gear, 606 is the adjusting gear, 607 is the adjusting wheel, 608 is the rack track base plate, 609 is the track, 610 is the rotating shaft, and 611 is the elastic wall bracket. Detailed Implementation

[0015] The invention will now be further described with reference to the accompanying drawings.

[0016] refer to Figure 1 As shown, an embodiment of the present invention is a mechanically adjustable acoustic cavity microphone, including a housing 1 and a microphone assembly 3 disposed inside the acoustic cavity hole 2 at the bottom of the housing 1. Importantly, the microphone assembly 3 includes a microphone 4, an acoustic cavity 5, and a microphone position adjustment assembly 6. The front end of the acoustic cavity 5 is fixedly mounted against the inside of the acoustic cavity hole 2 at the bottom of the housing 1. The microphone 4 is disposed at the center of the front end of the microphone position adjustment assembly 6. The front end of the microphone position adjustment assembly 6 is embedded against the rear end of the acoustic cavity 5. Adjusting the position of the microphone 4 in the acoustic cavity 5 can optimize the acoustic cavity according to the user's voice frequency characteristics.

[0017] Among them, the sound cavity 5 is a spherical cavity with openings at the top and bottom, mainly to allow the sound to resonate inside, and to collect sound signals in conjunction with the microphone 4.

[0018] More specifically, the microphone position adjustment assembly 6 includes a support rod 601, a limiting buckle 602, a support cup 603, a rack 604, a driven gear 605, an adjusting gear 606, an adjusting wheel 607, and a rack track base plate 608. The front end of the limiting buckle 602 is embedded and fixed to the rear end of the sound cavity 5. After the microphone 4 is fixed to the front end of the support rod 601, it moves through the middle through hole of the limiting buckle 602. The rear end of the support rod 601 is fixed to the middle of the support cup 603. The support cup 603 is movably embedded in the middle of the rear buckle of the limiting buckle 602 with a movement gap. The rack 604 is fixed to the middle of the rear side of the support cup 603. The rack 604 is movable. The adjusting gear 606 is fixed on the track 609 corresponding to the rack track base plate 608. The center of the adjusting wheel 607 is located above the rack 604. The adjusting gear 606 meshes with the driven gear 605, and the driven gear 605 meshes with the rack 604. The driven gear 605 and the adjusting gear 606 are rotatably mounted on the corresponding rotating shaft 610 of the rack track base plate 608. By rotating the adjusting wheel 607, the adjusting gear 606 is driven to rotate, which in turn drives the driven gear 605 to rotate, and then drives the rack 604 to move back and forth, thereby moving the position of the microphone 4, adjusting the size of the space in the middle of the sound cavity 5, and changing the resonance cavity.

[0019] Furthermore, the microphone position adjustment component 6 also includes a flexible wall bracket 611. The flexible wall bracket 611 is disposed inside the sound cavity 5, with its front end abutting against the inside of the sound cavity hole 2 at the bottom of the outer shell 1, and its rear end being shorter than the depth of the sound cavity 5 so as to abut against the microphone 4, limiting the maximum forward movement of the microphone 4 and preventing excessive movement from affecting the use of the microphone.

[0020] Furthermore, the microphone position adjustment component 6 also includes an adjustment drive device, which is powered by the adjustment wheel 607. The adjustment drive device can be a motor or other power device. The adjustment drive device is controlled by software and a central control system, which can realize intelligent automatic adjustment of the sound cavity to adapt to the voice recognition of specific users.

[0021] In addition to the above, it should be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this invention.

[0022] Although the invention has been described herein with reference to several illustrative embodiments, it should be understood that many other modifications and implementations can be devised by those skilled in the art, which will fall within the scope and spirit of the principles disclosed herein. More specifically, various variations and modifications can be made to the components and / or layout of the subject matter arrangement within the scope of the disclosure, drawings, and claims. Besides variations and modifications to the components and / or layout, other uses will be apparent to those skilled in the art.

Claims

1. A mechanically tunable acoustic chamber microphone comprising a housing and a microphone assembly disposed within the housing at the inside of a bottom acoustic chamber aperture, characterized in that: The microphone assembly includes a microphone head, a sound cavity, and a microphone head position adjustment component. The front end of the sound cavity is fixedly abutted against the inside of the sound cavity hole at the bottom of the housing. The microphone head is located at the center of the front end of the microphone head position adjustment component, and the front end of the microphone head position adjustment component is embedded against the rear end of the sound cavity. The microphone position adjustment assembly includes a support rod, a limiting buckle, a support cup, a rack, a driven gear, an adjusting gear, an adjusting wheel, and a rack track base plate. The front end of the limiting buckle is embedded and fixed to the rear end of the sound cavity. The front end of the support rod, after fixing the microphone, moves through the middle through hole of the limiting buckle. The rear end of the support rod is fixed to the middle of the support cup. The support cup is movably embedded in the middle of the rear end of the limiting buckle with a movement gap. The rack is fixed to the middle of the rear side of the support cup. The rack is movably set on the corresponding track of the rack track base plate. The adjusting gear is fixed at the center of the adjusting wheel below the rack. The adjusting gear meshes with the driven gear, and the driven gear meshes with the rack. The driven gear and the adjusting gear are rotatably mounted on the corresponding rotating shaft of the rack track base plate. The microphone position adjustment assembly also includes an adjustment drive device, which is poweredly connected to the adjustment wheel.

2. The mechanically adjustable acoustic cavity microphone according to claim 1, characterized in that: The sound cavity is a spherical cavity with openings at the top and bottom.

3. The mechanically adjustable acoustic cavity microphone according to claim 1, characterized in that: The microphone position adjustment assembly also includes an elastic wall bracket, which is disposed inside the sound cavity. Its front end abuts against the inside of the sound cavity hole at the bottom of the outer shell, and its rear end is shorter than the depth of the sound cavity to abut against the microphone, thus limiting the maximum forward movement distance of the microphone.

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