Arrayed pickup module of conference microphone
By designing an array-type microphone module, the problems of microphone protection, sound pickup, noise suppression, and power management were solved, achieving efficient and stable audio acquisition and transmission for conferences.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN MOORE ACOUSTICS TECH CO LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-06-02
AI Technical Summary
Existing conference microphones have shortcomings in terms of protection, pickup range, noise suppression, power management, and stability, which affect the lifespan of the equipment and the quality of the meeting.
An array-type pickup module for a conference microphone was designed, including a pickup plate, a fixed base, a shockproof shell, an anti-corrosion coating, a high-capacity battery, and shock-absorbing protrusions. Combined with an array microphone and a digital signal processing unit, it achieves efficient pickup, shock resistance, corrosion resistance, long battery life, and stability.
The conference microphone's protective performance has been improved, its sound pickup effect has been enhanced, noise interference has been reduced, it offers long battery life, and the stability and lifespan of the equipment have been increased.
Smart Images
Figure CN224319477U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of conference equipment technology, specifically to an array-type pickup module for conference microphones. Background Technology
[0002] In modern conference settings, clear and efficient sound acquisition and transmission are crucial for ensuring smooth meetings and accurate information delivery. As a core component of conference audio systems, the performance of conference microphones directly impacts meeting quality and participant experience. With the continuous development of audio technology, array-type microphones, with their unique advantages such as spatial selectivity and anti-interference capabilities, have gained widespread attention and application in the field of conference microphones.
[0003] However, existing conference microphones still have many shortcomings in terms of technology and practical application. From a structural design perspective, most conference microphones lack effective protective designs, exhibiting weak shock and corrosion resistance. In complex conference environments, they are susceptible to physical damage and chemical corrosion, affecting the lifespan and performance stability of the equipment. Regarding sound pickup, traditional conference microphones have limited pickup range and insufficient ability to suppress ambient noise, easily leading to sound distortion and interference, resulting in poor audio quality. Furthermore, some conference microphones have deficiencies in power management, with limited battery life and a lack of power display functionality, preventing users from promptly understanding the device's battery status and causing inconvenience during meetings. Simultaneously, stability issues during movement and placement are also significant, lacking effective shock absorption and convenient relocation designs. Summary of the Invention
[0004] The purpose of this invention is to provide an array-type pickup module for conference microphones to solve the problem of poor protection performance of existing conference microphones mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] An array-type pickup module for a conference microphone includes a pickup disk for the conference microphone, an array microphone is embedded in the center of the top surface of the pickup disk, and a fixed base is provided on the bottom surface of the pickup disk. The pickup disk and the fixed base are integrally formed.
[0007] The outer wall of the pickup plate is provided with an anti-collision shell, and the surface of the anti-collision shell is provided with an anti-corrosion coating;
[0008] The fixed base has a large-capacity battery embedded in the center of its bottom surface to provide power to the array microphone. The top edge of the fixed base is provided with a power switch and several sets of touch buttons. The outer wall of the fixed base has several sets of grooves for easy lifting. The bottom edge of the fixed base has several sets of shock-absorbing protrusions arranged in a ring at equal intervals.
[0009] Preferably, the impact-resistant shell is made of metal or acrylic and has a thickness of 5-10mm.
[0010] Preferably, the anti-corrosion coating is a nano-coating or a polyurethane coating with a thickness of 20-50 μm.
[0011] Preferably, the array microphone system includes a microphone array unit, a signal preprocessing unit, an analog-to-digital conversion unit, a digital signal processing unit, and an output interface.
[0012] Preferably, the bottom surface of the high-capacity battery is equipped with several heat dissipation fins arranged evenly and at equal intervals.
[0013] Preferably, the height of the shock-absorbing protrusion is greater than the height of the heat dissipation fins.
[0014] Preferably, the outer wall of the fixed base is equipped with a power display screen for displaying the remaining power of the internal high-capacity storage battery.
[0015] Compared with existing technologies, the advantages of this utility model are as follows: The array pickup module of this conference microphone achieves efficient sound pickup through the pickup disk and the array microphone embedded in the center of its top surface; the pickup disk and the fixed base are integrally molded, enhancing the overall structural stability; the impact-resistant shell and anti-corrosion coating on the outer wall of the pickup disk effectively protect the internal components from external impacts and corrosion; the large-capacity battery embedded in the center of the bottom surface of the fixed base provides long-lasting power support for the array microphone; the power switch and several sets of touch buttons on the top edge of the fixed base facilitate user operation and control; the several sets of grooves on the outer wall of the fixed base facilitate user lifting and moving of the device; and the several sets of evenly spaced, equidistant, ring-shaped shock-absorbing protrusions on the bottom edge of the fixed base effectively reduce vibration and noise during placement and use. Attached Figure Description
[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are explained in detail together with the embodiments of the present invention, but do not constitute a limitation thereof.
[0017] Figure 1 This is a schematic diagram of the structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of the present invention;
[0019] Figure 3 This is a system principle block diagram of the array microphone of this utility model;
[0020] 10. Pickup plate; 11. Shockproof outer shell; 12. Anti-corrosion coating;
[0021] 20. Array microphone; 21. Microphone array unit; 22. Signal preprocessing unit; 23. Analog-to-digital conversion unit; 24. Digital signal processing unit; 25. Control unit; 26. Output interface;
[0022] 30. Fixed base; 31. Power switch; 32. Touch button; 33. Recessed groove; 34. High-capacity battery; 35. Heat dissipation fins; 36. Shock-absorbing protrusion;
[0023] 40. Battery level display. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments and accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] In the description of this utility model, it should be understood that the terms "center", "vertical", "horizontal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of this utility model and to simplify the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0026] The array pickup module of the conference microphone, such as Figures 1-3As shown, the device includes a pickup disk 10 for a conference microphone. An array microphone 20 is embedded in the center of the top surface of the pickup disk 10. A fixed base 30 is provided on the bottom surface of the pickup disk 10, and the pickup disk 10 and the fixed base 30 are integrally formed. An anti-collision shell 11 is provided on the outer wall of the pickup disk 10, and an anti-corrosion coating 12 is provided on the surface of the anti-collision shell 11. A high-capacity battery 34 providing power to the array microphone 20 is embedded in the center of the bottom surface of the fixed base 30. A power switch 31 and several sets of touch buttons 32 are provided on the top edge of the fixed base 30. Several sets of grooves 33 for easy lifting are provided on the outer wall of the fixed base 30. Several sets of evenly spaced, equidistant, ring-shaped shock-absorbing protrusions 36 are provided on the bottom edge of the fixed base 30. The pickup disk 10 and the array microphone 20 embedded in the center of its top surface... The microphone array 20 features an integrated structure, achieving efficient sound pickup for the conference. The pickup plate 10 and the fixed base 30 are integrally molded, enhancing the overall structural stability. The outer wall of the pickup plate 10 is fitted with an impact-resistant shell 11 and an anti-corrosion coating 12, effectively protecting internal components from external impacts and corrosion. A large-capacity battery 34 embedded in the center of the bottom surface of the fixed base 30 provides continuous power support for the array microphone 20. A power switch 31 and several sets of touch buttons 32 are located on the top edge of the fixed base 30, facilitating user operation and control. Several sets of grooves 33 on the outer wall of the fixed base 30 facilitate lifting and moving the device. Several sets of evenly spaced, equidistant, ring-shaped shock-absorbing protrusions 36 on the bottom edge of the fixed base 30 effectively reduce vibration and noise during placement and use.
[0027] Furthermore, the impact-resistant shell 11 is made of metal or acrylic with a thickness of 5-10mm, which gives the pickup plate 10 good impact resistance and can effectively resist external physical damage.
[0028] It is worth noting that the anti-corrosion coating 12 is a nano-coating or polyurethane coating with a thickness of 20-50μm, which gives the surface of the anti-collision shell 11 excellent anti-corrosion ability and extends the service life of the equipment.
[0029] The array microphone 20 system includes a microphone array unit 21, a signal preprocessing unit 22, an analog-to-digital conversion unit 23, a digital signal processing unit 25, and an output interface 26.
[0030] The array microphone 20 works by using multiple units in synergy to achieve directional capture, noise suppression, and high-quality processing of sound signals. The specific process is detailed below, based on its system components (microphone array unit 21, signal preprocessing unit 22, analog-to-digital conversion unit 23, digital signal processing unit 25, and output interface 26):
[0031] 1. Microphone array unit 21: Spatial capture of sound signals
[0032] The microphone array unit 21 is the core of sound pickup, consisting of multiple (usually 4-16) microphones integrated at the center of the top surface of the pickup disk 10 according to specific rules (such as circular, linear, or uniform distribution). Its core function is to utilize the spatial differences of multiple microphones to simultaneously capture sound signals (including target speech, background noise, echoes, etc.) from different directions.
[0033] For example, when someone speaks from a certain direction during a meeting, there are subtle differences in the time, phase, and intensity of the sound reaching each microphone from that direction. These differences provide raw data for subsequent directional processing.
[0034] 2. Signal Preprocessing Unit 22: Analog Signal Optimization
[0035] The microphone array unit outputs a weak analog audio signal (voltage signal), which needs to be processed by the signal preprocessing unit 22 before entering subsequent stages. The core purpose of preprocessing is to optimize the quality of the analog signal, mainly including:
[0036] Signal amplification: The weak signal is amplified to a level suitable for subsequent processing by a low-noise amplifier (to prevent the signal from being overwhelmed by noise).
[0037] Filtering: Bandpass filters remove irrelevant frequency bands from the signal (such as low-frequency noise below 300Hz and high-frequency interference above 3400Hz) while preserving the main frequency bands of the speech signal.
[0038] Automatic gain control (AGC): Dynamically adjusts signal gain to avoid the signal becoming too strong (distorted) or too weak (loss of detail) due to changes in speaker distance.
[0039] 3. Analog-to-digital conversion unit 23: Digitization of analog signals
[0040] The pre-processed analog audio signal cannot be directly processed by digital circuits and needs to be converted into a digital signal by analog-to-digital converter unit 23. Its working process is as follows:
[0041] Sampling: The analog signal is discretized and acquired at a specific frequency (e.g., 16kHz, satisfying the Nyquist sampling theorem for speech signals), converting the continuous time signal into a discrete time-point signal;
[0042] Quantization: Converts the analog voltage value of each sample point into binary numbers (such as 16-bit quantization, which can represent 65,536 levels), and finally outputs a digital audio data stream (such as PCM format).
[0043] 4. Digital Signal Processing Unit 25: Core Algorithm Processing
[0044] The digital signal processing unit 25 is key to the array microphone's core functions such as "directional sound pickup and noise suppression." It performs in-depth processing of the digitized multi-channel audio signals through built-in algorithms, primarily including:
[0045] Beamforming: By utilizing the signal differences captured by multiple microphones, the direction of the sound source is calculated through algorithms (such as positioning based on the time difference of arrival TDOA), and an "acoustic beam" is formed—to enhance the sound signal in the target direction while attenuating noise in non-target directions (similar to the effect of an "acoustic telescope").
[0046] Noise suppression: By analyzing the statistical characteristics of background noise (such as the spectral characteristics of stationary noise), an adaptive filtering algorithm (such as minimum mean square error LMS) is used to separate and remove noise from the mixed signal, preserving clean speech;
[0047] Echo cancellation: If there are speakers in the conference system, echoes will be generated (the sound from the speakers is captured again by the microphone). The echo features are extracted and canceled by the adaptive echo canceller (AEC) to avoid "feedback" or speech overlap.
[0048] Speech enhancement: Further optimizes the clarity of the speech signal, such as removing impulse noise (e.g., keyboard typing sounds) and compensating for speech spectrum attenuation.
[0049] 5. Output Interface 26: Transmission and Application of Processed Signals
[0050] The digital audio signal (or analog signal after digital-to-analog conversion) optimized by the digital signal processing unit is transmitted to the outside through the output interface 26. It can be connected to the conference host, recording equipment, sound system or video conferencing terminal, etc., to ultimately achieve high-quality voice recording, transmission or playback.
[0051] In summary, the array microphone 20 achieves targeted enhancement, noise suppression, and high-quality processing of target speech in a conference setting through a complete process of "multi-microphone spatial capture → analog signal preprocessing → analog-to-digital conversion → digital algorithm optimization → signal output," significantly improving the clarity and anti-interference capability of conference audio pickup.
[0052] Specifically, the bottom surface of the large-capacity battery 34 is equipped with several evenly spaced heat dissipation fins 35. The height of the shock-absorbing protrusion 36 is greater than the height of the heat dissipation fins 35, which enables the large-capacity battery 34 to effectively dissipate heat during operation. At the same time, the shock-absorbing protrusion 36 can prevent the heat dissipation fins 35 from being squeezed and damaged when the equipment is placed.
[0053] In addition, a power display screen 40 is embedded on the outer wall of the fixed base 30 to display the remaining power of the internal high-capacity battery 34, so that users can intuitively understand the power status of the high-capacity battery 34 and conveniently charge it in time or take corresponding measures.
[0054] How does the array pickup module of this conference microphone work?
[0055] First, the user turns on the device by using the power switch 31 on the top edge of the fixed base 30. At this time, the high-capacity battery 34 begins to power the array microphone 20 and other components. Then, the user can operate several sets of touch buttons 32 as needed to make relevant settings for the device.
[0056] During use, the array microphone 20 embedded in the center of the top surface of the pickup disk 10 starts to work. The microphone array unit 21 is responsible for collecting conference sound signals. The signal preprocessing unit 22 preprocesses the collected signals. The analog-to-digital conversion unit 23 converts the analog signals into digital signals. The digital signal processing unit 25 further processes the digital signals. Finally, the processed signals are output through the output interface 26.
[0057] Users can check the remaining power of the large-capacity battery 34 in real time through the power display screen 40 embedded on the outer wall of the fixed base 30; if the power is low, it can be charged in time.
[0058] After the equipment is used, turn off the power switch 31. If the equipment needs to be moved, it can be lifted by the groove 33 on the outer wall of the fixed base 30. The shock-absorbing protrusion 36 on the bottom edge can buffer and absorb shock when placed. The anti-collision shell 11 and the anti-corrosion coating 12 protect the equipment from external damage throughout the process.
[0059] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. An array-type pickup module for a conference microphone, including a pickup plate (10) for the conference microphone, characterized in that: An array microphone (20) is embedded in the center of the top surface of the pickup disk (10), and a fixed base (30) is provided on the bottom surface of the pickup disk (10). The pickup disk (10) and the fixed base (30) are integrally formed. The outer wall of the pickup plate (10) is provided with an anti-collision shell (11), and the surface of the anti-collision shell (11) is provided with an anti-corrosion coating (12). The fixed base (30) has a large-capacity battery (34) embedded in the center of its bottom surface to provide power to the array microphone (20). The top edge of the fixed base (30) is provided with a power switch (31) and several sets of touch buttons (32). The outer wall of the fixed base (30) is provided with several sets of grooves (33) for easy lifting. The bottom edge of the fixed base (30) is provided with several sets of shock-absorbing protrusions (36) arranged in a ring at equal intervals.
2. The array-type pickup module of the conference microphone according to claim 1, characterized in that: The impact-resistant shell (11) is made of metal or acrylic and has a thickness of 5-10mm.
3. The array-type pickup module of the conference microphone according to claim 1, characterized in that: The anti-corrosion coating (12) is a nano-coating or a polyurethane coating with a thickness of 20-50 μm.
4. The array-type pickup module of the conference microphone according to claim 1, characterized in that: The array microphone (20) system includes a microphone array unit (21), a signal preprocessing unit (22), an analog-to-digital conversion unit (23), a digital signal processing unit (25), and an output interface (26).
5. The array-type pickup module of the conference microphone according to claim 1, characterized in that: The bottom surface of the large-capacity battery (34) is equipped with several heat dissipation fins (35) arranged evenly and equidistantly.
6. The array-type pickup module of the conference microphone according to claim 5, characterized in that: The height of the shock-absorbing protrusion (36) is greater than the height of the heat dissipation fins (35).
7. The array-type pickup module of the conference microphone according to claim 1, characterized in that: The outer wall of the fixed base (30) is fitted with a power display screen (40) for displaying the remaining power of the internal high-capacity storage battery (34).