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Recording Theory

Review Questions

QuestionAnswer
Give two reasons why studio construction differs from other construction: The need for isolation, the need for controlled acoustics
What two building techniques are used to improve isolation? Use a massive, dense material for walls, floors and ceiling. And add an air space between two surfaces
What do we call the effect that occurs when sound energy passes through a barrier? Transmission
What is reflection? Sound energy bouncing off a surface
What do we call the effect that occurs when sound energy is “trapped” within a barrier? Absorption
What do we call the effect of sound energy being reflected off a rough, uneven surface? Diffusion
What is leakage? Sound from other performers hitting a mic
What might we use to improve isolation between performers in the same room? Gobo or baffle
What is an iso booth generally used for? Isolating the loudest or softest performer from others
What do we call the measurement used for changes in sound and signal intensity? Decibel, dB
How much change in dB is needed to make a sound twice as loud or half as loud? 10dB
How much change in dB occurs when power (wattage) is doubled? 3dB
What is the change in dB when voltage is doubled? 6dB
How many volts is 0dB VU on pro equipment? 1.23v
Which of these is used to measure the amplitude of a sound - dBm, dBu, or dB SPL? dB SPL
What do dBm and dBu measure? Signal amplitude
What is the measurement of level from noise floor to clipping? Dynamic range
What do we call the difference between 0dB VU and clipping? Headroom
What do we call the difference between 0dB VU and noise floor? Signal to noise ratio
What do we call the first performances of a song, recorded starting with blank tape? Basic tracks
What do we call any new tracks recorded while listening in sync to the previously recorded tracks? Overdubs
What do we call replacing part of a previous track with a new performance? Punch in
What do we call creating a blend of tracks from multi-track and re-recording to another recorder? Mixdown
After listening to the final mix, what is the first thing we should do? Make safety copies or backups
Created by: rhueda
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