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Strictly speaking, noise is merely unwanted sound, irrespective of the loudness.

The 35 dB sound level from an air-conditioner may be noisy, whereas the 100 dB roar alongside the speedway may well be desired (and dangerous to your ears).

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11y ago

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What are small amplitude sounds?

Small amplitude sounds are those that have low intensity and are not very loud. These sounds can be quiet or subtle, such as a whisper or rustling leaves. They are in contrast to high amplitude sounds, which are louder and more intense.


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High sounds are usually heard when you play the keys of a piano that are on your right; they have shorter wavelengths than low sounds. Low sounds are usually heard when the keys on a piano's left end are played; they have long wavelengths. Soft sounds are quiet and can't render your ears deaf. Loud sounds that are over 85 decibels can damage your hearing.


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