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1 FUNDAMENTALS OF ACOUSTICS
www.who.int24 Fundamentals of acoustics Figure 1.1. Representation of a sound wave. (a) compressions and rarefactions caused in air by the sound wave. (b) graphic representation of pressure variations above and below
1 FUNDAMENTALS OF ACOUSTICS - World Health …
www.who.intSound generation illustrated. (a) The piston moves right, compressing air as in (b). (c) The piston stops and reverses direction, moving left and decompressing air in ... If the piston moves with simple harmonic motion, a sine wave is produced; that is, at any instant the pressure distribution along the tube will have the form of a sine wave ...