Index 1745Nickel-Cadmium batteries 697
Nikola Tesla 7
NIOSH
what’s the ear for? 1633
Nits
display technologies 1579
Noise
fiber optics 468
preamplifiers and mixers 737
resistors 244
sound system design 1241,
1325
what’s the ear for? 1636
Noise characteristics
consoles 887
Noise criteria
acoustical noise control 67
Noise criteria (NC) curves 67
Noise Criteria ratings
test and measurement 1610
Noise diode
solid state devices 322
Noise equivalent power (NEP)
fiber optics 482
Noise figure
audio transformers 289
consoles 860
transistors 331
Noise level analysis
acoustical noise control 70
Noise reduction
microphones 514
Noise Reduction Coefficient (NRC)
acoustical treatment for indoor
areas 101
Noise reduction systems 1078
Noise sensing
designing for speech intelligibil-
ity 1392
Noise sources
consoles 910
microphones 513
Noise-adaptive threshold automatic
microphone mixers 750
Nominal impedance
computer aided sound system
design 1345
fundamentals of audio and
acoustics 33
Nominal voltage
relays 376
Noninverting 336
Noninverting amplifiers
amplifiers 338
Noninverting voltage amplifiers
711
Nonlinearity of the ear
psychoacoustics 49
Non-magnetic materials
audio transformers 278
Nonmaskable interrupt
consoles 929
Nonreverberant spaces
acoustical treatment for indoor
areas 114
Nontotalizer
relays 391
Nordic N9 Standard
VI meters 1004
Normal link pulses (NLPs)
digital audio interfacing and net-
works 1494
Normalized field strength
assistive listening systems
1547
Normalizing
filters and equalizers 793
Norris Eyring
units of measurement 1661
NRZI encoding
digital audio interfacing and net-
works 1485
NTSC
VU meters 1002
NTSC television
display technologies 1581
Null indicators
consoles 946
Number of open microphones
units of measurement 1659
Number of open microphones
(NOM)
preamplifiers and mixers 743,
747
sound system design 1241
Number of open microphones atten-
uation (NOMA)
preamplifiers and mixers 746
Numerical aperture
fiber optics 460, 482Numerical diffusers
acoustical treatment for indoor
areas 118
Numerical model
acoustical modeling and aural-
ization 227–228
Nurse call
intercoms 1561
Nurse call systems
intercoms 1568
Nyquist diagram 705, 708
amplifier 705
Nyquist frequency
delay 811, 814
Nyquist Sampling Theorem
DSP technology 1169
O
O type attenuators 775
Oblique mode
small room acoustics 128
Oblique room modes
small room acoustics 128
Occluded ear
personal monitors 1425
Occupational Safety and Health Or-
ganization 35
Octave-band equalizers
sound system design 1286
Off-delay
relays 391
Ohm
fundamentals of audio and
acoustics 32
Ohm’s Law
fundamentals of audio and
acoustics 32
grounding and interfacing 1181
Ohm’s law
units of measurement 1654
Ohm’s law of acoustics
psychoacoustics 50
OLED
display technologies 1587
Oliver Heaviside 6
Omnidirectional microphone
493–494
On-delay
relays 391
One-half wave power supplies 672
One-third-octave band filters