Cameras have built–in microphones which work well in many situations.
If there is lot of noise you might need to use external microphones
small with clips that can be attach ed to a person's clothing. I
if you have more than one lavalier, you must mix the sound before sending it to the camcorder.
Cardioid microphones are designed to pick up sounds nearer to the microphone while muffling or rejecting sound behind and to the side.
The microphone is usually suspended from a pole called a boom or fishpole . A sound assistant uses the pole to hold the microphone out over the actors. Ideally, it should be slightly in front of the actors, aimed down at their mouths.