Audio

Friday 21st September 2018:

Humans hear from 20-20,000HZ.

Wavelength 

Wildtrack- background noise

VU meter: Avoid distortion         





















PPM meter:level of audio to avoid audio distortion
























TV programme:

Voice level: 5.5ppm
SFX level: 3ppm
Music level: 4ppm

Sound recording:

L&R 2 channels
Mic onboard-left (voice and wild-track)
Mic external-right (voice)
Boom directional mic/shotgun/rifle/ 4/6


Waveform-sine wave

Key Words:

• Wild-track:This is sound that is synchronised with a film but is recorded separately.
• VU meter: Means a volume unit which displays a representation of the signal level in audio equipment.
• PPM meter: Peak programme meter is used to indicate the level of an audio signal. 
• Waveform: A curve showing the shape of a wave at a given time.