Index
%
%ALcons, 3-7
A
acoustical treatment, 2-7 acoustics, 2-6
AHJ, 7-2 Amplifiers, 4-3 audibility, 5-2, 7-2
audio riser interface modules, 4-3
B
background noise, 3-3, 5-3
C
Ceiling height, 2-14 CIS, 3-6, 7-2 clipping, 7-2 combination system, 7-2 command center, 4-3, 7-2
Common Intelligibility Scale (CIS), 3-6 constant voltage, 7-2
coverage angle, 7-2
critical polar angle, 2-13, 2-14, 7-2
D
dB and distance chart, 2-9 decibel, 7-2
Decibel, 2-2 decibels, adding, 2-3 design method, 6-2 digital riser, 7-2 directivity factor, 2-11 directivity factor, 7-2 distortion, 3-5, 7-3 distributed speaker, 3-9
E
echo, 7-3
emergency voice evacuation systems, 1-1 emergency voice/alarm communications
system, 4-2
equal loudness curves, 2-4
F
fiber optic riser, 7-3
fire alarm audio systems, 4-3 frequency, 7-3
IN-1
G
Glossary of Terms, 7-1
I
intelligibility, 3-2, 5-4, 7-3 Intelligibility, 1-1 intelligibility, certification, 5-5 inverse square law, 2-9, 7-3
M
Microphone technique, 3-5
N
NACs, 4-3
NFPA, 7-3
O
Ohm’s Law, 2-2, 7-3
Overview, 1-1
P
percent ALcons, 3-7 phon, 7-3
phonetically balanced word scores, 3-7 polar plots, 2-10, 7-3
power ratings, 2-15 publications, related, v
R
RASTI, 3-7 regulatory issues, 5-1 related publications, v reverberation, 2-6, 3-4, 7-3 Reverberation, estimating times, 2-7 riser, 4-3, 7-3
riser, analog, 4-3 riser, digital, 4-3 riser, fiber optic, 4-3
Robinson and Dadson equal loudness curves, 2-4
room design calculator, 6-4
S
Sabine and Eyring equations, 2-7 sensitivity, 7-3
signal-to-noise ratio, increasing, 2-8 sound pressure levels (SPL), 7-3 Sound Pressure Levels (SPL), 2-2 speaker circuits, 4-4
speaker coverage, 2-12