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9 Cards in this Set
- Front
- Back
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sound level
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because of the wide range in pressure variations that humans can detect, these amplitudes are measured on a logarithmic scale
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decibels (db)
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measurement of sound level
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pitch
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frequency of a sound wave
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Doppler Shift
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a change in sound frequency due to the relative motion of either the source or the detector
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sound waves
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they move through air, cuz a vibrating source produces regular oscillations in air pressure, air molecules collide, transmitting the pressure variations away from source of sound
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sound
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longitudinal, motion of air molecules is parallele to direction of motion of waves
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speed of sound
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depends on temperature of air
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echoes
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sound waves reflected off of walls
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loudness
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measured by the amplitude (amplitude measures variation in pressure along a wave)
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