Page 7 - Master Handbook of Acoustics

Contents

Introduction

1 Fundamentals of Sound
Simple Harmonic Motion and the Sine Wave

Sound in Media
Particle Motion
Propagation of Sound
Speed of Sound

Wavelength and Frequency
Complex Waves

Harmonics
Phase
Partials

Octaves
Spectrum
Electrical, Mechanical, and Acoustical Analogs

2 Sound Levels and the Decibel

Ratios versus Differences
Expressing Numbers
Logarithms

Decibels
Reference Levels

Logarithmic and Exponential Forms Compared
Acoustic Power
Using Decibels
Measuring Sound-Pressure Level

Sine-Wave Measurements

3 Sound in the Free Field
The Free Field

Sound Divergence
Sound Intensity in the Free Field
Sound Pressure in the Free Field

Free-Field Sound Divergence
Sound Fields in Enclosed Spaces
Hemispherical Field and Propagation