Multi-microphone integrated harmonica wireless microphone

Abstract

The invention discloses a multi-microphone integrated harmonica wireless microphone. The multi-microphone integrated harmonica wireless microphone comprises a shell, a multi-microphone array, a wireless transmitting module, a lithium battery and an auxiliary structure, the multi-microphone array adopts a multi-microphone layout and covers low, middle and high pitch areas, so that full-band uniform pickup is realized, and the performance is stable; the wireless transmitting module is integrated on the PCB and supports low-delay and high-fidelity tone quality transmission; the two sections of lithium batteries are distributed at the two ends of the shell, endurance is prolonged, and weight balance is optimized. The right support of the shell is provided with a charging port and a liquid crystal touch screen, can display the electric quantity and the connection state and supports touch screen interaction; dust screens are designed at the bottom and on the side surfaces to effectively prevent dust from entering; the locking screws are clamped and fixed at two ends of the harmonica through the left and right supports, and rubber gaskets are attached to the tops of the locking screws to protect the harmonica. The microphone is small in size, does not affect holding and hand vibration skills, is suitable for stage performance, recording and daily practice, has the advantages of wide pickup, long endurance, high portability and the like, and is wide in application prospect.

Description

Technical Field

[0001] The invention belongs to the technical field of wireless audio equipment, and in particular relates to a multi-microphone integrated harmonica wireless microphone, which is used to achieve high-quality sound pickup and wireless audio signal transmission of harmonica playing. Background Art

[0002] The harmonica is a portable musical instrument widely used in stage performances, recordings and daily practice. It has rich timbres and diverse playing techniques. However, traditional pickup methods often fail to meet the needs of high-quality audio pickup. The main problems are uneven pickup range, distorted sound quality and insufficient portability of the equipment. Some traditional microphones need to be fixed by external brackets or held in hand, which not only affects the performer's hand movements, such as hand vibration techniques, but also may increase the complexity and weight of the equipment, reducing its ease of use.

[0003] In recent years, the rapid development of wireless transmission technology and miniaturized sound pickup equipment has provided new ideas for improving the quality of musical instrument pickup. However, most existing wireless microphones are single-head designs, which cannot evenly pick up the bass, mid-range, and treble areas, resulting in insufficient audio reproduction. In addition, battery life and equipment stability are also technical bottlenecks of existing equipment, especially in long-term performances or recording scenarios. Therefore, the development of a harmonica-specific microphone that integrates multiple microphones and supports wireless audio transmission, which has the characteristics of a wide pickup range, high sound quality reproduction, convenient operation, and strong battery life, has become an important direction for the development of technology in this field.

[0004] Among the existing patents, Patent 201721383004.8 "Harmonica Condenser Microphone" discloses a harmonica condenser microphone, which consists of a base shell, a cover plate with dense holes, a microphone head, a microphone jack, a connecting wire and a converter plug. It is designed to be integrated with the harmonica to form a perfect internal sound cavity to capture the best harmonica sound and have a sound amplification effect, allowing the performer to play the harmonica in any position without constraints. However, the sound pickup effect is poor with a single microphone head, and the cavity wraps the bottom of the harmonica, making it impossible for the performer to perform techniques such as hand vibration sound, and the microphone is wired for transmission, which still has limitations when playing.

[0005] Patent 202121903780.2 "A harmonica microphone" discloses a harmonica microphone, including a first shell with a sound receiving module and a sound pickup port, as well as a noise reduction device and a clamping device, which is intended to reduce the noise during harmonica playing and improve the sound pickup effect. At the same time, it is easy to connect to the harmonica, and has the characteristics of simple structure and convenient and practical. This microphone uses a single microphone head to pick up sound and a wired transmission method, which results in poor sound pickup and limited performance. In addition, this connection structure is only applicable to polyphonic harmonicas and cannot be applied to chromatic harmonicas.

[0006] Patent 201920235599.5 "A harmonica microphone" discloses a harmonica microphone, including a shell and multiple fixed pickup heads, which aims to improve the sound amplification effect of the harmonica through the sound blocking structure and the sound passing structure, make the sound range more balanced, reduce wind noise, and improve the signal-to-noise ratio. At the same time, a magnetic structure is used to facilitate the fixation to the harmonica. This connection method requires permanent magnetic stickers to be pasted on the bottom of the harmonica, which is not firmly fixed. At the same time, the external magnetic field will affect the pickup effect of the microphone, and the wired transmission limits the performance. Summary of the invention

[0007] The purpose of the present invention is to provide a multi-microphone integrated harmonica wireless microphone, which can achieve uniform sound pickup in the entire frequency band through a multi-microphone array, and adopt wireless transmission technology to ensure high audio fidelity and low latency. The microphone has a compact structure and is easy to install at the bottom of the harmonica without affecting the playing skills, and is suitable for stage performances, recordings and daily practice. In addition, it is designed with a lithium battery power supply, a liquid crystal display and a dustproof net to enhance the endurance and ease of operation, and effectively solve the problems of poor sound quality and poor portability of traditional sound pickup equipment.

[0008] The technical solution adopted by the present invention to solve the technical problem is: a multi-microphone array, a wireless transmission module, a dual-stage lithium battery, and a display and switch structure are integrated inside the wireless microphone body to achieve the full-band sound pickup and wireless audio transmission functions of the harmonica. Among them, the multi-microphone array is reasonably arranged to cover the sound pickup requirements of the bass, mid-range, and treble areas, and is evenly welded on the PCB board; the wireless transmission module is integrated on the PCB board to wirelessly transmit the picked-up audio signal to the receiving device, and the wireless microphone is installed on the bottom of the harmonica through a locking screw.

[0009] The multi-microphone array can cover the bass, mid-range and treble areas of the harmonica, and the microphone spacing and arrangement are optimized to ensure uniformity of sound pickup and signal clarity. The microphone array is fixed on a PCB board inside the microphone body, and the stability and low noise characteristics of sound pickup are ensured through reliable circuit connection.

[0010] The wireless transmission module is located at the rear end of the PCB board and is used to achieve high-fidelity, low-latency audio wireless transmission. It supports multiple encoding formats and is compatible with different audio receiving devices.

[0011] The dual-stage lithium battery is installed at both ends of the microphone housing to provide power support for the entire system. This design not only extends the battery life of the device, but also improves the balance of the device by optimizing the weight distribution.

[0012] The right support is externally installed with a liquid crystal touch screen and a charging port, wherein the liquid crystal screen can display the power level and connection status of the microphone, and realize switch control and mode switching functions through touch; the switch structure supports the operation logic of short press to turn on / off the screen and long press to shut down, simplifying the usage process.

[0013] The microphone is provided with a cluster of small sound holes at the bottom and is equipped with a dust-proof net to prevent dust from entering the interior while maintaining a good audio pickup effect.

[0014] The left and right supports are fixed to the two ends of the harmonica by locking screws. Rubber gaskets are attached to the tops of the locking screws to protect the surface of the harmonica from scratches or damages. The shell is made of lightweight and high-strength material to ensure that the device is lightweight and durable as a whole.

[0015] This design scheme comprehensively improves the practicality and portability of the harmonica microphone by optimizing the sound pickup performance, wireless transmission capability and user interaction function, and is suitable for harmonica playing and recording needs in multiple scenarios.

[0016] Compared with the prior art, the present invention has the following main advantages:

[0017] First, the sound pickup effect is significantly improved. The present invention adopts a multi-microphone sound pickup design, which achieves full coverage of the harmonica sound range through a number of reasonably arranged sound pickup heads, and can clearly capture from low frequency to high frequency, effectively improving the shortcomings of the traditional single-microphone microphone with a narrow sound pickup range and uneven frequency band, ensuring that the sound restoration is more real and natural.

[0018] Second, it improves the freedom of performance. The invention adopts wireless audio transmission technology, which completely gets rid of the limitations of traditional microphone wired transmission. Performers can move freely without worrying about cable entanglement or insufficient length, which greatly improves stage performance and ease of use.

[0019] Third, the fixing method is optimized. The support structure and snap-on design are used to achieve a stable connection between the microphone and the harmonica, avoiding the problem of loose fixing caused by sticking permanent magnetic stickers in the existing technology, while eliminating the interference of the external magnetic field on the pickup effect, ensuring the stability and reliability of the device.

[0020] Fourth, the compatibility is strong. The design of the present invention is compatible with various types of harmonicas, including polyphonic harmonicas, chromatic harmonicas and blues harmonicas, and a wide range of adaptation is achieved through an adjustable fixing structure, thus overcoming the problem of a single adaptation range of the device in the prior art.

[0021] Fifth, it supports hand vibration techniques. The design process fully considers the needs of playing techniques. The microphone structure does not block the bottom of the harmonica, and the player can freely use hand vibration techniques, effectively avoiding the situation in the existing technology where the hollow design hinders the performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention.

[0023] Figure 2 This is a front view of the microphone installed on the bottom of the harmonica.

[0024] Figure 3 This is the isometric view of the microphone installed at the bottom of the harmonica. Figure 1 .

[0025] Figure 4 This is the isometric view of the microphone installed at the bottom of the harmonica. Figure 2 .

[0026] In the figure: 1. Microphone body; 2. Left support; 3. Locking screw; 4. Rubber gasket; 5. Sound hole; 6. Right support; 7. Display screen; 8. Charging port; 9. Switch; 10. Upper cover; 11. Lithium battery; 12. Microphone head; 13. Wireless transmitter module; 14. PCB board; 15. Dust net; 16. Harmonica. DETAILED DESCRIPTION

[0027] The present invention designs a multi-microphone integrated harmonica wireless microphone. By integrating multiple microphones in the shell, it can achieve all-round pickup of the harmonica sound and ensure high-fidelity sound quality output. The multi-microphone structure can effectively make up for the shortcomings of the traditional single microphone with a small pickup range and poor effect, greatly improve the pickup sensitivity and signal-to-noise ratio, and adapt to various performance environments. In addition, the traditional microphone limits the range of activities of the performer due to the wired design. The present invention significantly improves the performance freedom through wireless transmission technology, and the performer can move at will without affecting the pickup effect. At the same time, the shell is designed with a special sound hole structure, which not only optimizes the resonance effect of the sound cavity, but also ensures that the hand vibration sound and other technical operations can be realized during the performance, further enhancing the expressiveness and applicability of the performance.

[0028] The present invention will be further described below in conjunction with the embodiments and drawings.

[0029] The invention provides a multi-microphone integrated harmonica wireless microphone, the structure of which is as follows: Figure 1 As shown, it includes a housing 1, a plurality of microphone arrays 12, a wireless transmission module 13, a battery assembly 11, a locking structure 3, and a display module 7. The microphone is a U-shaped structure, which is clamped at both ends of the harmonica through a left support 2 and a right support 6, and is quickly locked and disassembled by a locking screw 3. The multi-microphone array 12 and the wireless transmission module 13 are welded on a PCB board 14, a lithium battery 11 is installed at both ends of the microphone, and a display screen 7, a charging port 8, and a switch 9 are arranged on the side of the right support 6.

[0030] The housing 1 is designed as a U-shaped structure, and is firmly mounted on the bottom of the harmonica through left and right supports 2 and 6 and locking screws 3. The bottom and sides of the housing are provided with a cluster of small sound holes 5, which are composed of tiny holes to optimize the transmission of audio signals, reduce air flow interference, and ensure clear and high-fidelity sound quality. At the same time, the dustproof net 15 protects the internal components and prevents dust from entering, ensuring stable sound quality and long-term use of the device.

[0031] The multi-microphone array 12 is composed of a plurality of high-sensitivity condenser microphones, which are specifically arranged to cover the harmonica sounding area, achieving high-fidelity sound pickup in the full frequency band. The signal is transmitted to the audio processing module through an independent channel, and the bass, mid-range and treble are picked up in a balanced manner, reducing the timbre deviation and signal loss, and the audio is transmitted in real time through the wireless transmission module 13, improving the playing freedom and sound quality experience.

[0032] The wireless transmission module 13 transmits high-fidelity audio signals to audio equipment or receiving terminals in real time through Bluetooth or radio frequency technology, and has a built-in anti-interference circuit to ensure sound quality. It supports multiple audio protocols and automatic pairing to improve connection convenience. Wireless connection eliminates traditional wired limitations, provides higher flexibility and freedom, reduces device interference, and improves the performance experience and the stability of sound quality transmission.

[0033] The lithium battery 11 has a structure as follows Figure 1 As shown, it is a dual-stage high-capacity rechargeable lithium battery installed at both ends of the housing 1 to provide stable power support for the microphone array 12, the wireless transmitter module 13 and the display module 7. The battery is charged through the charging interface 8 to meet the needs of long-term performance. At the same time, the display module 7 can display the power status and the connection status and device information of the microphone in real time.

[0034] The locking screw structure 3 adopts a precision thread design and is located on the side of the left support 2 of the microphone, which is used to firmly fix the microphone on both ends of the harmonica. By rotating the locking screw, the position of the microphone can be quickly adjusted and tightened to ensure that it is stable and without shaking. The structure is equipped with a rubber gasket 4 to increase friction and prevent loosening. At the same time, it plays a shock-absorbing role, reduces the impact of external vibration on the microphone, and ensures stable and accurate sound pickup. The rubber gasket 4 has good elasticity and wear resistance, ensuring stability during long-term use.

[0035] The working process of the present invention is: at the beginning of the performance, the multi-microphone integrated harmonica wireless microphone is fixed to both ends of the harmonica through locking screws and supporting structures, and after ensuring that the microphone is stable, the device is started by the switch. Multiple high-sensitivity microphone arrays are arranged in a specific manner, and transmit audio signals to the audio processing module through independent channels to optimize the pickup effects of bass, mid-range, and treble, reduce timbre deviation, and improve signal quality. The optimized audio signal is transmitted to the audio equipment in real time through the wireless transmission module to achieve high-fidelity audio output, without the need for wired connection throughout the process, providing a highly free performance experience. After the performance, the microphone can be quickly disassembled and charged through the charging port. The display screen can display the power level, connection status, and audio mode selection in real time, improving the convenience of operation and user experience.

Claims

1. A multi-microphone integrated harmonica wireless microphone, characterized in that The microphone comprises a housing (1), a left support (2), a right support (6), a multi-microphone array (12), a lithium battery (11) and a wireless transmission module (13); the left support (2), the right support (6) and the housing (1) form a U-shaped structure to clamp the harmonica at both ends of the harmonica; the multi-microphone array (12) comprises a plurality of microphones evenly arranged and fixed on a PCB board (14) by welding; the lithium battery (11) is a segmented structure and is respectively arranged at both ends of the microphone; and the wireless transmission module (13) is fixed on the PCB board (14) by welding.

2. The multi-microphone integrated harmonica wireless microphone according to claim 1, characterized in that The microphone is clamped at the bottom of the harmonica by the left support (2) and the right support (6), and is quickly locked and loosened by the locking screw (3) on the left support (2). A rubber gasket is attached to the top of the locking screw (3) to achieve buffering and protect the surface of the harmonica. The quick locking structure is not limited to the locking screw (3) described in this patent. Other quick locking structures under the structural framework of this patent (such as a sliding switch plus a V-shaped spring, etc.) are all within the protection scope of this patent.

3. The multi-microphone integrated harmonica wireless microphone according to claim 1, characterized in that The multi-microphone array (12) is arranged reasonably to achieve uniform sound pickup in the bass, midrange and treble regions, and is welded and fixed on the PCB board (14). The multi-microphone array (12) changes with the number of harmonica holes. All similar multi-microphone array sound pickup designs are within the protection scope of this patent.

4. The multi-microphone integrated harmonica wireless microphone according to claim 1, characterized in that The wireless transmitting module (13) is integrated and welded on a PCB board (14) and is used to wirelessly transmit the audio signal to a receiving device. Wireless transmission can eliminate the constraints of the wire harness on the performance process and the form of expression.

5. The multi-microphone integrated harmonica wireless microphone according to claim 1, characterized in that The lithium battery (11) is of a double-section structure and is disposed at two ends of the housing, respectively, for supplying power to the microphone and improving battery life. The segmented symmetrical arrangement can balance the weight of the two ends of the microphone.

6. The multi-microphone integrated harmonica wireless microphone according to claim 1, characterized in that The bottom and both sides of the microphone housing (1) are evenly provided with clusters of small sound holes (5) for optimizing the audio pickup effect and ensuring the clarity of sound transmission, and cooperate with the internal multi-microphone array (12) to further improve the audio restoration and sensitivity.

7. The multi-microphone integrated harmonica wireless microphone according to claim 6, characterized in that The interior of the cluster of small sound holes (5) is covered with a dustproof net (15), which effectively prevents dust and impurities from entering the interior of the microphone, thereby extending the service life of the device.

8. The multi-microphone integrated harmonica wireless microphone according to claim 1, characterized in that The right support (6) is integrated with a liquid crystal screen (7), a charging port (8) and a switch (9). The liquid crystal display screen (7) is installed on the outside of the right support (6) and is used to display the battery power, microphone connection status and working mode in real time, and supports touch interaction. When the liquid crystal screen is not operated for a long time, it automatically reduces the brightness to reduce power consumption.

9. The multi-microphone integrated harmonica wireless microphone according to claim 8, characterized in that The charging port (8) is located at the bottom of the right support (6) and is used to provide a charging interface for the lithium battery (11).

10. The multi-microphone integrated harmonica wireless microphone according to claim 8, characterized in that The switch (9) is arranged side by side with the charging port (8) and is used to control the microphone's power on and off and the screen display status. When the microphone is in the off state, a short press of the switch can turn it on. When the microphone is in the on state, a long press of the switch can turn it off. When the microphone is in the on state, a short press of the switch can turn off the LCD screen (7) to reduce power consumption and extend battery life.

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