Index 1711Derived quantities in physics 1648
Design objectives for automatic mi-
crophone mixers
preamplifiers and mixers 744
Design procedures
fiber optics 477
Designation and Environmental Ar-
eas 439
Designing a complex cluster
sound system design 1265
Designing a distributed ceiling sys-
tem
sound system design 1271
Designing for speech intelligibility
%Alcons 1391, 1396, 1398,
1400
absorption coefficient 1396
Articulation Index (AI) 1391,
1404, 1409
articulation loss of consonants
1396, 1404
atmospheric absorption 1401
automatic level control 1392
C35 1405
C50 1404–1405
C7 1405
comb filters 1390
computer modeling 1400
D/R ratio 1388, 1395
direct + early reflections 1394
direct sound 1394
direct to reverberant measure-
ments 1404
direct to reverberant ratio 1393,
1396
discrete echoes 1394
distributed ceiling loudspeaker
system 1395
distributed loudspeaker systems
1398
early reflections 1388, 1394
early to late ratios 1404
echo disturbance 1398
echoes 1397
equalization 1389, 1400
intelligibility 1397
intelligibility criteria 1403
intelligibility measurement
1403
intelligibility prediction 1395,
1400
late reflections 1394
loudness 1390
loudspeaker
directivity (Q) 1396
loudspeaker directivity 1396
Modified Rhyme Test (MRT)
1403
nature of speech 1387
noise sensing 1392
Peutz equations 1396
phonemically balanced (PB)
word lists 1403
polar ETC measurements 1409
RASTI 1405
RaSTI 1406–1407
rate of delivery 1401
reverberation 1394
reverberation time (RT60)
1393, 1396
signal to noise ratio 1390
SII Speech Intelligibility Index
1409
sound field components 1394
spectator sports 1392
speech intelligibility 1387
Speech Interference Level
1403
speech spectrum 1388
Speech Transmission Index
(STI) 1392, 1405
Speech Transmission In-
dex—STI 1397
speech waveforms 1387
STI 1405
STI modulation reduction factor
1408
STI/RaSTI 1408
STIPA 1405, 1407
STIPa 1407
system distortion 1388
talker articulation 1401
U50 1405
U80 1405
designing for speech intelligibility
intelligibility optimization
1402
Desktop loudspeakers
consoles 918
Destructive acoustic interferenceloudspeaker clusters 652
Detector
fiber optics 480
Detector specifications
fiber optics 476
Detectors
fiber optics 467
Devolved mixing
consoles 914
Diacs
solid state devices 325
Diaphragm types
loudspeakers 598
Diaphragmatic absorbers
acoustical treatment for indoor
areas 109
Dielectric absorption (DA) 255
Dielectric constant
capacitors 252
Dielectric constants
wire and cable 403, 425
Differential amplifier
grounding and interfacing 1185
Differential amplifiers
integrated circuits 339
Differential noise-canceling micro-
phone 530
Differential polar relay 381
Differential signal
integrated circuits 353
Diffraction
acoustical treatment for indoor
areas 120
Diffraction of the head
psychoacoustics 58
Diffuse field
computer aided sound system
design 1346
Diffuse reflection
acoustics for auditoriums and
concert halls 178
Diffuse-field equalization
microphone 555
Diffuse-field sensitivity
computer aided sound system
design 1344, 1356
Diffuser testing
acoustical treatment for indoor
areas 117
Diffusion