1730 Index
inverting amplifiers 338
monolithic 334
MOSFET transistors 335
National LM381 340
noninverting amplifiers 338
op-amps 344, 358
operational transconductance
amplifier 340
operational voltage amplifiers
335
output capacitance compensa-
tion 338
peak level detection 345
power supply compensation
338
rms level detection 345
single ended bootstrap 358
SSM2018 343
SSM2141 355
state-variable filter 346
sum-difference networks 356
summing inverter amplifiers
340
THAT 2180 343
THAT1200-series 355
THAT1510 351
THAT2252 347
transformer input microphone
preamplifiers 349
VCA 341
voltage controlled amplifier
342
Integrated control of outboard gear
consoles 953
Integrated detector preamplifier
fiber optics 467
Integrated Optical Components
(IOCs)
fiber optics 481
Integrated sequencers
MIDI 1118
Integration times
psychoacoustics 54
Intelligibility
%Alcons 1391–1392, 1398,
1400, 1404, 1408
Alcons 157, 159
comb filters 1390
designing for speech intelligibil-
ity 1397
loudspeaker clusters 654
Intelligibility criteria
designing for speech intelligibil-
ity 1403
Intelligibility measurement
designing for speech intelligibil-
ity 1403
Intelligibility of sentences
acoustics for auditoriums and
concert halls 157
Intelligibility of words
acoustics for auditoriums and
concert halls 157
Intelligibility optimization tech-
niques
designing for speech intelligibil-
ity 1402
Intelligibility prediction
designing for speech intelligibil-
ity 1395, 1400
Intensity
fiber optics 481
Interaural Cross-Correlation Coeffi-
cient (IACC)
acoustics for auditoriums and
concert halls 153
Interaural intensity difference (IID)
psychoacoustics 57
Interaural level difference (ILD)
psychoacoustics 57
Interaural phase difference
psychoacoustics 50
Interaural phase difference (IPD)
psychoacoustics 57
Interaural temporal difference
psychoacoustics 58
Interaural time difference
psychoacoustics 57
Intercommunication systems
intercoms 1561
Intercoms
4-channel, two wire party line
system 1570
absence registration 1566
all call 1566
apartment intercom systems
1563
beltpacks 1575
broadcast 1569
broadcast matrix systems 1571broadcast party line systems
1570
call back 1566
call forwarding 1567
call reply 1567
call transfer 1567
camp on 1567
capture ratio 1575
central answering service 1567
commercial security systems
1564
commercial systems 1566
conference 1567
conference line systems 1561
crosspoint electronics 1572
dedicated line 1561
digital matrix systems
1561–1562, 1572
digital potentiometers 1573
display features 1567
distributed line systems 1561
DTMF 1563, 1575
emergency call systems 1561
emergency crisis communica-
tions 1566
equipment locator 1568
fiber optic systems 1572
FM transmission 1575
group callback 1567
hands free 1567
headsets 1575
hospital facilities systems 1566
industrial systems 1566
intercommunication systems
1561
interrupted feed-back 1573
interrupted fold-back 1573
interrupted return-feed 1573
last number redial 1568
matrix systems 1571
mechanical switching matrix
1562
microphone cutout 1568
nurse call 1561
nurse call systems 1568
paging 1568
party line system 1570
party line systems 1561
PBX lines 1563
PBX station intercommunica-