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Full Description
Sound-Power Flow: A Practitioner's Handbook for Sound Intensity is a guide for practitioners and research scientists in different areas of acoustical science. There are three fundamental quantities in acoustics: sound pressure, sound particle velocity, and sound intensity. This book is about sound intensity and demonstrates the advantages and uses of acoustical sensing compared with other forms of sensing. It describes applications such as: measuring total sound power; directional hearing of humans and mammals; echolocation; measuring sound-power flow in ducts; and uses of non-contact, focused, high-frequency, pulse-echo ultrasonic probes.
This book presents computational approaches using standard mathematics, and relates these to the measurement of sound-power flow in air and water. It also uses linear units rather than logarithmic units - this making computation in acoustics simpler and more accessible to advanced mathematics and computing. The book is based on work by the author and his associates at General Motors, the University of Mississippi, and Sonometrics.
Contents
Mathematics and measurement of sound-power flow in fluids
Calibration and normalization of probes in air
Mathematics of sound-power flow in solids
Sound sources and methods of exciting sound
Sound-power flow over the ground, and in the atmosphere and ocean
Sound-power flow in the Earth's structure
The sound power of a source measured on a hypothetical enclosing surface
The sound power of a source measured at its surface
Enhancement of sound power by sound from other correlated sources
Transfer-function methods applied to incident and reflected components of sound-power flow in a duct
Determining the direction of a sound source in fluids
Computer-visualation of the free vibrations of metal spheres and shells
Computer visualation of acoustic scattering and response of spheres in water
Acoustic scattering and focusing by spheres in water
Computed results compared with experimental data
Mathematical model of head impact
Sound-power flow during airbag deployment in a motor vehicle compartment
Uses of high-frequency, focused, pulse-echo ultrasonic probes
Detecting insect pests in agricultural commodities
Holography of liquid droplets
Wooden sounding boards
Use of deturbulators to improve performance of wind farms
Sound-power flow in medical ultrasonics
Metamaterials
Cosmic sound waves
Back matter
