Audio Problems Microphones pick up
every sound within their range!
A noisy background can degrade sound quality.
To have good audio, point the microphone away from a noisy background.
Overcoming Audio Problems Identify the separate
types of sound that are wanted for a sequence
Isolate each sound component and record them separately.
Select position and adjust microphone to obtain consistent,high quality audio
Production Sound Production sound is the sound that is
recorded with the video. Using a separate mic will get you a
professional quality instead of using the built in microphone (i.e. our camera mic)
Production sound calls for special care because mistakes may require another shot
Background Sounds To avoid background
noise, turn off controllable sounds like heating units, and background conversations.
Minimize uncontrollable noises like traffic or wind
Choose a calm quite area to shoot.
Sound effect Sound effects are
often recorded “wild” meaning separately from production track.
Common uses for this is dialogue replacement.
User worn mic (Lavaliere) Certain very small
microphone that are designed to be clipped onto the performers clothing
Their advantage is that they do not have to be aimed or moved by a technician.
Cabled Mics
Traditional microphones communicate via special cables. (XLR cables)
Because they are shielded against outside electrical interference these cables provide the cleanest, most reliable connection.
Wireless Mics
- Wireless microphones send signals on specialized radio frequencies to receivers cabled to the audio recording system.- Inexpensive wireless microphone are prone to interference from unwanted outside signals.- These are used with less trouble of a cable mic with almost the same quality.
Booms Mic booms are typically used in studios
where their weights and bulk are not inconvenient.
Booms are useful because the operators do not have to hold the weight of the microphone.
Fish Poles Fish pole booms must
be held, moved and aimed manually, but they are far lighter and more compact than booms.
For this reason fish poles are preferred on many location shoots
Microphone stands Microphone stands
are indispensable for recording narration, musical performance, and any other applications.
Although short table stands are often used for voice recording
Receivers Wireless microphone
incorporate radio transmitter that send the signals to matching receivers
The receiver in turn are cabled to the camcorder or separate audio recorder
Headphones Headphones are
essential for quality sound recording. like the viewfinder for video. Headphones let you preview what you are recording to check the quality or the way it sounds.
Quality The keys to good audio are distance and direction.
Place the mics as close to the subject as you can without getting into the picture.