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AUDIO MEASUREMENT SYSTEMS
Acoustic Studies 3 Study Guide
9
Engineering
Undergraduate 4
07/24/2013

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Cards

Term
WHAT IS REVERBERATION?
Definition
It is the sound that lingers in a room after the signal is turned off
Term
WHAT IS THE ITG?
Definition
Initial Time Gap
Term
WHO WAS WALLACE C. SABINE?
Definition
Founder of the Science of Architectural acoustics and developed the RT60 formula.
Term
WHAT IS RT60?
Definition
The amount of time it takes for sound to decay 60dB
Term
WHAT IS SABINE’S CLASSIC EQUATION FOR RT60?
Definition

Rt60 = 0.049v

           Sā

Term
WHAT IS THE FORMULA TO CALCULATE THE VOLUME OF A ROOM?
Definition
Volume = length x width x height
Term
HOW DO YOU CALCULATE FOR S (TOTAL SURFACE AREA)?
Definition
Multiply each surface by its 2 dimensions then sum them all together.
Term
WHAT IS THE FORMULA TO CALCULATE THE AVERAGE ABSORPTION COEFFICIENT OF A ROOM?
Definition
ā  = s1a1 + s2a2 + ….. + snan
S
Term
WHAT CHANGES ARE MADE TO THE CLASSIC SABINE EQUATION, WHEN CALCULATING FOR THE ABSORPTION OF AIR?
Definition
Add +4mV to the denominator of the sabine equation.
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