Radience

Sound

Science

acoustics

the study of sound
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cochlea

a fluid-filled spiral structure in the ear that converts sound vibration into nerve impulses
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decibel

a unit of sound loudness
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doppler effect

the change in pitch of a sound when the source is moving relative to the listener
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eardrum

a membrane in the outer ear that transmits sound vibrations to the middle ear
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echo

a reflected sound wave
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echolocation

the use of reflected sound waves to locate objects
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intensity

the amount of energy a wave carries through a unit area in one second
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loudness

how loud or soft a sound is perceived to be
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music

sounds combined in a pleasing way
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overtone

any frequency higher than the fundamental frequency of sound
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pitch

how high or low a sound is, as determined by its frequency
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reverberation

the echoes of sound waves
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sonar

the use of the reflection of sound waves to locate underwater objects
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sound quality

the difference between sounds having the same pitch and loudness
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ultrasonic

sound waves with frequencies above 20,000 Hz
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