describes your perception of the energy of sound.
Energy of the source
related to amplitude.
Distance From the Source
loudness decreases with distance.
Energy stays constant, but spreads out further away.
amount of energy a sound wave carries per second through a unit area.
description of how high or low a sound seems to a person. Depends on the frequency of a sound wave.
sounds above 20,000 Hz
sounds below 20 Hz
An increase in frequency
faster than sound.
overlapping crests forming a V shape.
a cone shaped wave produced by an object moving at supersonic speed through a fluid.
the sharp crack heard by a listener when the conical shell of compressed air that sweeps behind a supersonic aircraft reaches them.
Part that remains stationary
as set of notes that combine in patterns that are pleasing.
no pleasing pattern of notes
Standing waves occur only at specific freq. that are called
higher natural frequencies.