How does wireless microphone work?

　　Wireless microphone, also called 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.

　　BY-WM5 Wireless Microphone
　　BOYA BY-WM5 wireless microphone is for use with DSLR cameras, camcorders. The 2.4 GHz GFSK system result in strong anti-interference, good security and stability.

　　Two-way communication, but only sound from transmitter can be recorded. The operation range is 50m without obstacle, 360 degree all-round revolveis workable, the maximum distance can reach up to 80m. You can adjust the volume through VOL+ and VOL- volume control. The lapel clip makes it easy to carry.


　　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 the 750px-1000px, too far away will increase the reverberation, too close to the signal will be too strong lead to audio distortion, affecting the clarity of this Is the "talk about the effect of", when the distance broadcast, low frequency sound will be significantly improved.
　　Of course, the effect of near-speaking effects on sound is not entirely unacceptable. Experienced and well-versed professional singers sometimes use this effect exclusively to alter sound effects.
　　Third, pay attention to the sound source between wheat point of view

　　Wireless microphone has a certain effective angle, usually, the sound source should be aligned as far as possible the center line of the microphone, because the greater the deviation angle, the greater the loss of effect.

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