USB Microphone Wireless Transmission via UHF
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Solution Overview
Problem
Traditional USB microphones are limited by the length of their USB cables, leading to interruptions in the USB AUDIO signal and resulting in broken sound and popping, which restricts their use in scenarios where the microphone is far from the computer.
Innovation Solution
A USB microphone for wireless transmission using UHF wireless technology, which includes a holder, base shell, and PCBA boards with UHF wireless transmitter and receiver chips, allowing for digital signal transmission over longer distances without the limitations of traditional USB cables.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If a long USB cable is used to connect the microphone to the computer, then the distance between the microphone and computer can be increased, but the USB AUDIO signal will be interrupted causing broken sound and popping
Solution Approach 1:
The patent replaces the mechanical USB cable connection system with a wireless transmission system using UHF radio frequency. The microphone converts audio signals to digital signals and transmits them wirelessly to a receiver connected to the computer, eliminating the physical cable constraint that limited cable length and caused signal interruption. This substitution of wireless electromagnetic transmission for wired mechanical connection resolves the contradiction between cable length and signal stability.
2Reliability
If the USB cable length is limited to maintain signal stability, then the USB AUDIO signal remains stable, but the microphone cannot be used in scenarios where it is far from the computer
Solution Approach 1:
By replacing the mechanical USB cable connection with wireless UHF transmission, the system removes the physical distance constraint inherent in wired connections. The wireless transmitter in the microphone and receiver in the base station enable audio transmission without cable length limitations, allowing the microphone to be used in diverse scenarios including outdoor recording, live performances, and situations where the microphone needs to be positioned far from the computer.
3Adaptability or versatility
If wireless transmission is implemented, then the distance limitation is removed and application scenarios are expanded, but the device complexity increases with additional components
Solution Approach 1:
The patent divides the wireless microphone system into separate functional modules: a handheld microphone unit with transmitter, a base station with receiver and USB Audio converter chip, and a rotating ball connector. This segmentation allows each component to perform its specific function efficiently while maintaining overall system manageability. The modular design reduces the complexity burden on any single component and enables flexible configuration for different usage scenarios.
Solution Approach 2:
The base station is designed with multiple functions: receiving wireless UHF signals, converting USB Audio digital signals to analog signals for amplifier output, and providing a rotating ball connection for versatile positioning. The USB Audio converter chip handles both wireless reception and analog conversion functions. This multi-functionality reduces the need for separate devices and justifies the increased complexity by consolidating multiple capabilities into a single integrated system.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables convenient and reliable wireless recording over long distances, expanding application scenarios such as outdoor use and long-distance recording, while maintaining high-quality audio transmission.
Implementation Method 1
The UHF wireless transmitter chip uses the UHF band of 430-1492 Mhz to perform a band search to enter the pairing status
Implementation Method 2
The receiver receives the digital signal through the second PCBA board
Data Source
AI summary
The invention provides a USB microphone for wireless transmission, which relates to the specific application in the field of U-band wireless transmission. It is a USB microphone for wireless transmission, comprising a holder and a base shell. The top of the holder is attached to the fixing frame by screws. Within the fixing frame there is a mute button attached by screws, a microphone core and lithium batteries. The first PCBA board is screwed inside the fixing frame. The second PCAB board is screwed inside the base shell, and it is provided with an output for USB at one end. A face shell is set on top of the base shell. By combining UHF wireless transmission with a USB microphone, the invention frees the USB microphone from the length of the USB cable and enables USB transmission of digital signals for recording while being used wirelessly.