Index 1771concert halls 169
Travel-Time-Based Reverbera-
tion-Time Enhancing Systems
acoustics for auditoriums and
concert halls 191
Treble horns
computer aided sound system
design 1350
Tree coupler
fiber optics 483
Triacs
solid state devices 325
Triaxial cable
wire and cable 421
Triboelectric noise
wire and cable 430
Triode
tubes 311, 313
Tri-polar array
Loudspeaker clusters 653
Troubleshooting a sound system
1314
True Array Principle (TRAP)
loudspeaker clusters 651
TTL (Transistor-Transistor Logic)
746
Tubes 311
amplification factor 312
base diagrams 311
beam- power 311
cathode 311
control grid 311, 314
diode 311
filament 311
Fleming valve 311
grid bias 314
grid voltage 315
grid-current 315
grid-to-plate capacitance 314
heater 317
heptode 311
hexode 311
input capacitance 313
internal capacitance 313
nomenclature 312
output capacitance 314
pentagrid 311
pentode 311
plate 311
plate dissipation 315
plate efficiency 315
plate resistance 314
polarity 313
power sensitivity 315
screen grid 311, 315
step-up transformer 331
suppressor grid 311
symbols 311
tetrode 311
transconductance 312
triode 311, 313
tube elements 311
types 311
voltage gain 312
Tuned dipolar array
loudspeaker clusters 653
Tuned stub noise attenuators
acoustical noise control 92
Tunnel diode
solid state devices 322
Turnoff time
solid state devices 324
Turnon time
solid state devices 324
Turns ratio
audio transformers 276–277,
280, 299, 302
Turntable
acoustic noise 1020
analog discs 1018
cartridge voltage output 1033
cleaning records 1037
drive systems 1018
elliptical stylus 1031
induced-magnet cartridges
1028
laser 1034
magnetic field 1027–1028
moving-coil cartridges 1027
moving-magnet cartridges
1028
phono preamplifiers 1033
platter 1018
semiconductor pickup cartridges
1029
speed of rotation 1019
spherical stylus 1031
step-up transformer
1027–1028
styli 1026, 1031stylus cantilever 1032
stylus characteristics 1032
stylus tip 1031
tonearm resonance damping
1025
tonearms 1021
variable-reluctance cartridges
1027
Twisted pair
wire and cable 407
Twisted pair impedance
wire and cable 434
Two channel party line system
intercoms 1570
Two-integrator loop
consoles 885
Two-way cardioid microphone
502
Two-way crossovers
loudspeakers 624
Two-wire telephone connection
preamplifiers and mixers 758
txUnicastMode
digital audio interfacing and net-
works 1506
Tympanic membrane
psychoacoustics 43
Types of automatic microphone
mixers
preamplifiers and mixers 748
Types of tubes 311
Typical digital circuits 363
Typical sound pressure levels
fundamentals of audio and
acoustics 26
U
U attenuators 775
U.S. to SI units conversion factors
units of measurement 1666
U50
designing for speech intelligibil-
ity 1405
U80
designing for speech intelligibil-
ity 1405
UDF
optical disc formats 1146
UFC
message repeaters and evacua-
tion systems 1526