Handbook for Sound Engineers

21

Chapter 2

Fundamentals of Audio and

Acoustics

by Pat Brown

2.1 Introduction.............................................................................. 23
2.2 The Decibel.............................................................................. 23
2.3 Loudness and Level........................................................................ 26
2.4 Frequency............................................................................... 26
2.5 Wavelength.............................................................................. 27
2.6 Surface Shapes........................................................................... 29
2.7 Superposition............................................................................. 30
2.8 Ohm’s Law.............................................................................. 32
2.9 Human Hearing........................................................................... 34
2.10 Monitoring Audio Program Material......................................................... 35
2.11 Sound Propagation....................................................................... 36
2.11.1 The Point Source...................................................................... 36
2.11.2 The Line Source...................................................................... 37
2.12 Conclusion.............................................................................. 38
Bibliography 39