How do you use a wireless phone?
Radio microphone, can achieve sound recovery and expansion, more convenient than wired microphone, for wireless microphone how to use? What skills do you need to master when using it?
First, impedance matching
When the wireless microphone is used, the output impedance of the wireless microphone is the same as the input impedance of the amplifier, and if the loss ratio is greater than 3:1, the transmission effect will be affected. For example, when a 50Ω wireless microphone is connected to an amplifier with an input impedance of 150Ω, although the output can be increased by nearly 7 Db, the sound will be significantly reduced at high and low frequencies.
2. Working distance and close-up effect
Under normal circumstances, the working distance between the wireless microphone and the mouth is best at 750px- 1000px, if the distance is too far, the reverberation increases, and the noise will increase accordingly. Using too close a distance will distort the signal, and the low-frequency sound will affect the clarity of the language. Due to the "near-field effect" of directional microphones, the low-frequency sound field will be significantly improved when broadcasting at close range. However, sometimes singers deliberately use the "proximity effect" to make the singing effect more beautiful and pleasant.
3. Angle of wireless microphone and sound source
Each wireless microphone has its effective Angle, the general sound source should be aligned with the wireless microphone center line, the greater the deviation Angle between the two, the greater the treble loss. Sometimes when using a wireless microphone, there will be a "roaring" sound, then it will be deflected some Angle, you can reduce some.
4, wireless microphone position and height
Loudspeaker, the wireless microphone should not be placed near the speaker or aligned with the loudspeaker, otherwise it will lead to whistling.
The height of the radio microphone should be determined according to the height of the sound source, if it is a person speaking or many people singing, the height of the wireless microphone should be consistent with the player's mouth; When there are many people, the average height of the wireless microphone should be selected, and the position of various instruments in the players, accompanists and players should be appropriately deployed, so that the sound is not too loud, not too light, not too light, so that all sounds are in the effective Angle of the wireless microphone.Please enter content......