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- An oscillation in pressure, stress, particle displacement,
particle velocity, etc., in a medium with internal forces (e.g.,
elastic, viscous), or the superposition of such propagated oscillations.
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Sound is
vibrational disturbance, exciting hearing mechanisms, transmitted in a
predictable manner determined by the medium through which it propagates. To be
audible the disturbance must fall within the frequency range 20Hz to 20,000Hz.
Source:
http://www.owenscorning.com/around/sound/glossary.asp
- A sensation evoked by the oscillation described above in the
human ear.
In case of possible confusion, the term sound wave or elastic
wave may be used for concept 1 and the term sound sensation for concept
2. Not all sound wave can evoke an auditory sensation, e.g., ultrasound.
The medium in which the sound exists is often indicated by an
appropriate adjective, e.g., airborne, water borne, structure borne.
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