Page 16 - The Master Handbook Of Acoustics
P. 16
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CONTENTS
The Bonello Criterion 348
Controlling Problem Modes 348
Mode Summary 350
Chapter 16 Reflections in Enclosed Spaces 353
Law of the First Wavefront 353
Mean Free Path 354
The effect of single reflections 355
Perception of sound reflections 355
Perception of spaciousness 357
Image changes 357
Discrete echoes 357
Effect of angle of incidence on audibility
of reflection 357
Effect of signal type of audibility of reflection 358
Effect of spectrum on audibility of reflection 358
Using reflection data 359
Large Spaces 359
Echoes 359
Spaciousness 360
Chapter 17 Comb-Filter Effects 363
What Is a Comb Filter? 363
Superposition of Sound 364
Tonal Signals and Comb Filters 365
Combing of music and speech signals 367
Combing of direct and reflected sound 368
Comb Filters and Critical Bands 371
Comb Filters in Stereo Listening 374
Coloration and Spaciousness 374
Combing in Stereo Microphone Pickups 375
Audibility of Comb-Filter Effects 375
Comb filters in practice 376
Estimating comb-filter response 380
Chapter 18 Quiet Air for the Studio 385
Selection of Noise Criterion 386
Fan Noise 388
