Audio Post Production Knowledge Base

Today's Audio Term: Matrix When audio engineers matrix...

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Noise Floor
The inherent noise of a recording medium, a noise floor typically sounds like hiss and differs with the makeup of different types and qualities of tape and film. For example, a consumer grade cassette tape has a higher noise floor than a professional 1/4” tape, and a high quality digital

Amplitude
A sound wave moving through the atmosphere pushes air. As the air in front of the wave gets compressed, the air pressure goes up. The magnitude of change in the air pressure from that sound wave is its amplitude. The bigger its amplitude, the louder the wave will sound.

Lt/Rt
Lt/Rt (Left total / Right total) stereo indicates two channels of program that exist as an encoded matrix of four discrete source channels. When Dolby® decoded, the two-channel matrix will play back as LCRS (left, center, right, surround). Lt/Rt tracks are also designed to sound natural in a two