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Sound Vocab

echo a reflected sound wave
elasticity the ability of a material to bounce back after it is disturbed
dencity the ratio of mass to volume
loudness perception of energy of a sound
intencity the amount of energy carried through a substance per second
decibel a unit of how loud a sound is
pitch perception of the frequency of a sound
ultrasound sound wave with the frequency over 20,000Hz
infrasound sound with frequencies lower then the human hearing range
larynx 2 folds of tissue that make up the voice box
Doppler effect the change in frequency of a wave as its source moves in relation to an observer
what causes the Doppler effect when a sound source moves, the frequency of the wave changes because of the motion of the source adds to the motion of the waves
what causes a sonic boom when an object breaks the sound barrier
fundamental tone the lowest natural frequency of an objoct
overtone the natural frequency that is multiple of the fundamental tone's frequency
acuostics the study of how sound interacts with its surroundings
reverbration the echoes of a sound that are heard after it stops producing sound waves
ear canal the narrow part of the ear leading to the ear drum from the outside of the ear
eardrum a small, tightly stretched, drumlike membrane in the ear
cochlea a fluid filled cavity in the inner ear that is shaped like a snail shell
echolocation the use of reflected sound waves to determine distance or to locate