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| Ïîèñê ïî óêàçàòåëÿì |
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| Beranek L.L. — Acoustics |
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| Ïðåäìåòíûé óêàçàòåëü |
Impedances, American Standard 11
Impedances, analogies 77—78
Impedances, characteristic 11 36
Impedances, closed-box 216—221
Impedances, conversion to mobility analogies 51
Impedances, definitions 11
Impedances, horn 269—273
Impedances, inverter 85
Impedances, loudspeaker 185 213
Impedances, mechanical 11 52
Impedances, microphones 157 160—161 165
Impedances, motional 85 187
Impedances, perforated sheet 138—139
Impedances, pipes 131—135
Impedances, plane wave 35
Impedances, screens 134—135
Impedances, slits 135—136
Impedances, spherical wave 36—38
Impedances, surge 36
Impedances, transducer 83—86
Impedances, tubes 131—135
Impedances, tubes, rigidly closed 32—35
Impedances, tubes, small 135
Impedances, voice-coil 214—216 229
Inertance see "Mass"
Infinite baffle 210
Inner ear 390
Intelligibility of speech 406—417
Intensity, definition 11
Intensity, example 45
Intensity, general equation 43
Intensity, plane waves 44
Intensity, simple source 93
Intensity, spherical waves 44—45 93
Introduction 1—8
Isothermal alternations 19
Isothermal, definition of 4
Jug 130—131 133
Kapok 220
Kinematic coefficient of viscosity 137
Klipsch horn 283
Laboratory experiments viii
Large-amplitude waves 272—274
Length, effective, of tube, flanged 132—133
Length, effective, of tube, unflanged 133
Level, acoustic intensity 12
Level, band pressure 15 364
Level, discomfort, tickle, pain 396—397
Level, intensity 12—14
Level, loudness see "Loudness levels"
Level, power see "Power levels"
Level, power-spectrum 15 364
Level, pressure 13 305 314—322 361—369
Level, pressure-spectrum 15 364
Level, sound 14 372
Level, sound pressure 13 361—369 372
Level, spectrum 15 364
Level, threshold of audibility 394—396
Level, tolerance 396—397
Levers, floating 57—58 61—62
Levers, simple 56—57
Line microphones 96—97
Linguistic factors 412—417
Lining impedance 219—221
Lining, baffle-box 219
Linings in ducts 352—353
Listeners, criteria 417—429
Listeners, hearing 388—406
Listeners, preferences 205—206 208
Listeners, speech intelligibility 406—417
Lithium sulphate 164—177
Lobe, principal 96
Lobe, side 96
Losses, air 308—311 345—346
Loudness function 401—402
Loudness levels, calculation 401—403
Loudness levels, contours 399—400
Loudness levels, definition 398—399
Loudness units 401
Loudness, calculation 401—403
Loudness, definition 401
Loudness, differential sensitivity 403—404
Loudness, principles 398—403
Loudspeakers, bass-reflex enclosed 142—143
Loudspeakers, box-enclosed 113—115
Loudspeakers, coaxial 202—203
Loudspeakers, distortion, harmonic 252—253
Loudspeakers, distortion, nonlinear 252—253
Loudspeakers, divided-cone 201
Loudspeakers, duocone 201
Loudspeakers, electromagnetic 183—207
Loudspeakers, horn combination 259—284
Loudspeakers, impedance 185 213
Loudspeakers, moving-coil 75—76
Loudspeakers, multiple 259—260
Loudspeakers, subjective judgments 205
Loudspeakers, triaxial 202—203
Machinery, power levels, factory 338—340
Machinery, power levels, office 340
Machinery, vibration isolation 335—339
Magnetic-tape recorder 363
Masking of pure tone, by another 405
Masking of pure tone, by noise 405—406
Masking, critical bandwidths 334 365—366 393—394 406
Masking, definition 404—405
Mass law 328
Mass, acoustic 63—64 131—133
Mass, diaphragm 215 229—230
Mass, mechanical 52—53
Mass, radiation 116—128 216 242
Mass, voice-coil 214—215
Massa microphone 176
Materials, sound-absorbing 134 219—221 250 303—304 335—339 350—360
Materials, wall 328
Matrix, impedance 84—86
Matrix, transducer 83—86
Mean free path 288—289
Measurement, analysis 362—365
Measurement, directivity 365—369
Measurement, fluctuating sounds 371
Measurement, high sound levels 370
Measurement, high-frequency noise 370
Measurement, low sound levels 309—370
Measurement, low-frequency noise 370
Measurement, sound power level 365—367
Measurement, sound pressure 361—376
Measurement, sounds in varying humidity and temperature 370
Measurement, spectrum level 364
Mechanical circuits 47—62
Mechanical compliance 53—54
Mechanical elements 51—62
Mechanical generators 55—56
Mechanical impedance 11 52
Mechanical mass 52—53
Mechanical ohm 11
Mechanical resistance 54
Mechano-acoustic transducers 75
Megaphone 106—108
Mel 397 403
Membrane, stretched 130
Metals, density 197
Metals, resistivity 197
Meters, fast-scale 371—372 420
Meters, rms 26
Meters, slow-scale 371—372 420
Meters, sound-level 15 372—373
Meters, sound-pressure-level 26 361—365 369—372
Microbar, definition 9
microphones 144—177 303
Microphones, angle of incidence 146 372—374
| Microphones, bass quality 38—39 178 182
Microphones, cables on 371
Microphones, calibrator for 363
Microphones, cardioid 148 180—182
Microphones, ceramic 174—177
Microphones, choice 369
Microphones, combination 149—150 178—182
Microphones, diffraction effects 157 180 372—374
Microphones, distortion, harmonic 173
Microphones, distortion, harmonic, nonlinear 173
microphones, dynamic 151—157
Microphones, effect of humidity on 151 157 167 174 370
Microphones, electromagnetic 151—157
Microphones, electrostatic 157—164
Microphones, hydrostatic 107 170 175 177
Microphones, impedance 157 160—161 165
Microphones, incidence angle 146 372—374
Microphones, line 90—97
Microphones, moving-coil 151—157 303
Microphones, piezoelectric 70 164—177
Microphones, pressure 144—177
Microphones, pressure-gradient 140—149 178—182
Microphones, velocity 146—149 178—180
Middle ear 390
Missing fundamental 404
mks units 9 82 209
Mobility, acoustical 117 120—121 123—126
Mobility, analogies 77—78
Mobility, conversion to impedance analogies 51
Mobility, definition 52
Mobility, horn 264 270—271
Mobility, mechanical 52—62
Mobility, ohm 52
Mobility, radiation 117 120—121 123—126
Mode, normal, of vibration 280
Mohm 52
Mole 19
Motion equation 17—18 39
Motional impedance 85 187
Mounting of acoustical materials 303—304
Mouth, horn, definition 259
Mouth, size 268
Moving-coil earphone 88
Moving-coil loudspeaker 75—70
Moving-coil microphone 151—157 303
Moving-coil transducers 71 75 88 90
Mufflers 353—300
Multicellular horns 107—108
Multiple loudspeakers 259—200
National Bureau of Standards test room 325
Natural frequency 287 290
Near field 100—101
networks 401
Newton's second law 18 53 04
Noise control, air losses 315 348
Noise control, analyzers 333—334
Noise control, barriers 348
Noise control, criteria 334
Noise control, directivity 334
Noise control, directivity, source 342—344
Noise control, doors 349—350
Noise control, ducts 350—353
Noise control, environment 334
Noise control, factors 333—335
Noise control, illustration 335—339
Noise control, mufflers 353—360
Noise control, procedures 333—339
Noise control, required 334
Noise control, source levels 338—341
Noise control, terrain losses 347
Noise control, transmission paths 334
Noise control, vibration isolation 335
Noise control, walls 324—330 349—350
Noise levels, acceptable 417—428
Noise measurement 361—376
noise reduction see "Noise control"
Noise, aircraft 342 344
Noise, ambient (background) 374
Noise, ambient (background), correction for 375
Noise, analysis of 302—305
Noise, automobiles 339—340
Noise, control of see "Noise control"
Noise, effect of, on hearing 390—397 410—419
Noise, effect of, on speech intelligibility 408—410
Noise, fan 342
Noise, machinery 339—341
Noise, measurement of 361—370
Noise, random 393
Noise, self, in microphones- 174
Noise, white 393
Noise-reduction coefficients 303
Nomogram, directivity-index 113
Nonlinear distortion, horns 272—276
Nonlinear distortion, loudspeakers 252—253
Nonlinear distortion, microphones 173
Nonlinear distortion, plane waves 272—274
Nonlinearity in gases 272—274
Normal frequencies 287
Normal modes of vibration 286
Normal threshold of audibility 395
Normal-frequency diagram 296
Norris — Eyring equation 306
Objective noise meter 15 372—373
Octave, analyzers 333—334 362—366
Octave, definition 364
Ohm, acoustic 11
Ohm, mechanical 11
Open tube 131—133
Optimum reverberation time 425
Optimum room constant 426
Orchestra power levels 338
Organ pipes 106
Orthotelephonic gain 409
Ossicles 390
Oval window 390
Pain due to large sounds 396—397
Parabolic horn 276
Parabolic megaphone 106—108
Parallel baffles 356—359
Particles, displacement 7
Particles, velocity 7
Particles, velocity, plane wave 35
Particles, velocity, relation to pressure 39
Particles, velocity, rigidly closed tube 29—31
Particles, velocity, spherical wave 36
Partitions, building 328—329
Perforated facings 302—303
Perforated sheet 138—139
Phon 399
Piezoelectric coupling coefficient 72
Piezoelectric microphone 76 164—177
Piezoelectric substances 167
Piezoelectric transducers 71—75 90
Pipes, junctions 139—142
Pipes, organ 106
Piston, directivity 101—106
Piston, impedance 118—128
Piston, in end of tube 103—104 123—128
Piston, in infinite baffle 101—103 105—106 118—123
Piston, in tube 28—35
Piston, without baffle 103—105 128
Pitch, definition 397—398
Pitch, differential sensitivity 404
Plane waves, distortion 272—274
Plane waves, free progressive 5 35
Plane waves, impedance 35—36
Plane waves, large-amplitude 272—274
Plane waves, particle velocity 35
Plane waves, pressure 35
Plane waves, rigidly closed tube 28—35
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