Loudness is the human perception of sound intensity. It is frequently measured in dB which is a scale based on the human threshold of hearing (which is given a measurement of 0 dB on up).
Loudness, like pitch, is a perceptual (not a physical) quantity. When we measure the range in terms of psychological units (the sones scale, established by Stevens and others via magnitude estimation), we find a rock band sounds about 1000 times louder than rustling leaves.
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loudness is a measure of how the ear responds to a sound. It is defined as a measure of how much power is transmitted per unit area.
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Answer:
Loudness is the human perception of sound intensity. It is frequently measured in dB which is a scale based on the human threshold of hearing (which is given a measurement of 0 dB on up).