The advent of instruments capable of measuring sound intensity, which represents the flow of energy in sound fields, has revolutionised audio-frequency acoustical metrology. Since publication of the first edition, two International Standards for the use of sound intensity for sound source power determination, and one International Standard for sound intensity instrumentation, have also been published. A number of International Standards have also been developed.

chapter 1|3 pages


chapter 3|26 pages

Sound and sound fields

chapter 4|51 pages

Sound energy and sound intensity

chapter 6|35 pages

Instrumentation and calibration

chapter 7|10 pages

Errors in sound intensity measurement

chapter 11|15 pages

Sound intensity in flow ducts