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English
In the field of professional audio equipment, wireless microphone systems are widely used in stage performances, conference speeches, live recording, and other scenarios due to their portability and flexibility. However, there are significant differences in stability and anti-interference ability between ordinary wireless microphones and wireless microphones using "true diversity" technology. This article will analyze the core differences between the two from three dimensions: technical principles, practical applications, and performance.
1、 Differences in Technical Principles
1. Ordinary wireless microphone (single receiver system)
Single channel reception: Conventional wireless microphones typically use a single receiver design, receiving wireless signals from the transmitter (microphone) through only one antenna.
Signal transmission risk: In complex environments such as obstruction by obstacles, electromagnetic interference, etc., single channel reception is prone to frequency interruption, noise, and even signal loss due to signal path obstruction or interference.
2. Wireless true diversity microphone (dual receiver system)
Dual channel reception: True diversity technology is equipped with two independent receiving modules and antennas, which can simultaneously receive signals from the same transmitter.
Intelligent signal switching: The system will compare the signal quality of two channels in real time, automatically select the more stable signal output, and ensure continuous and stable audio transmission.
Space diversity and frequency diversity: Some high-end true diversity systems also combine space diversity (antenna spacing optimization) and frequency diversity (dual band transmission) to further reduce the risk of signal interference.
2、 Performance comparison
1. Anti interference capability
Ordinary microphone: susceptible to interference from WiFi, Bluetooth, other wireless devices, or metal obstacles, resulting in intermittent or noisy sound.
True diversity microphone: The dual channel design significantly reduces the impact of a single interference source, especially in complex environments with multiple devices coexisting, making it more reliable.
2. Signal stability
Ordinary microphone: During mobile use (such as stage performances), if there is obstruction between the transmitter and receiver, the signal may be instantly interrupted.
True diversity microphone: Even if one channel signal is blocked, the other channel can still maintain transmission, achieving "seamless switching" and avoiding mute or popping problems.
3. Coverage Area
Ordinary microphone: The effective transmission distance is relatively short (usually 50-100 meters), and it decreases with the complexity of the environment.
True Diversity Microphone: With dual channel optimization, the signal coverage is wider (up to 150 meters or more) and the ability to penetrate walls is stronger..
3、 Application scenarios and cost differences
1. Applicable scenarios
Ordinary microphone: suitable for small meetings, personal live broadcasts, teaching and other scenarios that do not require high stability.
True Diversity Microphone: Designed specifically for professional settings such as large-scale concerts, film and television shoots, press conferences, etc., ensuring "zero errors" in critical situations.
2. Cost and maintenance
Ordinary microphone: simple structure, low price (within a thousand yuan), but high failure rate, long-term use cost may increase.
True diversity microphone: With complex technology and high prices (thousands to tens of thousands of yuan), it has strong reliability and is suitable for high-frequency, high demand professional users.
4、 How to choose?
Limited budget and simple scenario: ordinary wireless microphones are sufficient to meet daily needs.
Professional requirements and stability priority: True diversity system is a necessary investment to avoid the risk of "rollover" in important situations.
Future scalability: True diversity systems typically support multi-channel networking, making them suitable for large-scale events that require multi microphone collaboration.
summary
The wireless true diversity microphone solves the pain point of easy interruption of ordinary microphone signals through dual receiving channels and intelligent switching technology, and is a "safe solution" in the professional audio field. However, ordinary wireless microphones still hold a place in small-scale applications due to their cost-effectiveness advantage. Users need to choose the most suitable equipment based on their actual needs, usage scenarios, and budget.
