Wireless microphone, consists of transmitting and receiving. Among them, the launch part of the battery-powered microphone to convert sound to audio signals, after the internal circuit processing, audio information can be radio waves emitted to the surrounding space.
The receiving part is usually powered by the power supply, the receiving antenna receives the radio wave transmitted by the transmitting part first, then processes the internal circuit to extract the audio signal and then transmits it to the sound amplification system through the output signal line to complete the wireless transmission.
Understand the working principle of Wireless microphone, here to talk about the wireless microphone when you need to pay attention to what issues.
First, pay attention to impedance matching
The output impedance of the Wireless microphone, which is the same as the input impedance of the amplifier, is the best match. If the mismatch ratio exceeds 3: 1, it will have an impact on the audio transmission effect, although it can also be used, but the high and low frequency sound will have a significant loss.
Second, pay attention to working distance and near effect
In the hand-held Wireless microphone speech or singing, the working distance between the microphone and the mouth is generally more appropriate in 750px-1000px, too far away will increase the reverberation, too close to the signal will be too strong lead to audio distortion, affecting clarity, which Is the "talk about the effect of", when the distance broadcast, low frequency sound will be significantly improved.
BY-WM8 Dual Channel UHF Wireless Microphone System
The BOYA BY-WM8 Dual-Channel UHF wireless system is a portable, camera-mountable wireless system for capturing audio with dual subjects. It can be used in several environments for video, field recording, interview, broadcast TV, and ENG applications.
Wireless microphone has a certain effective angle, usually, the sound source should be aligned with the center line of the microphone, because the greater the deviation angle, the greater the loss of effect.
Fourth, pay attention to wireless wheat placement and height
Sometimes we hear sharp, harsh sounds when we turn on the microphone, which is fine because the microphone and the speaker are placed too close together.
When using a microphone stand, the height of the Wireless microphone should be as high as the performer's mouth to avoid over- or under-impact of the radio effect.
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