the smallest audible sound is ____dB
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On the decibel scale, the smallest audible sound (near total silence) is 0 dBA. A sound 10 times more powerful is 10 dBA. A sound 100 times more powerful than near total silence is 20 dBA. A sound 1,000 times more powerful than near total silence is 30 dBA.
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The smallest audible sound to humans is typically 0 dB SPL (hearing threshold). In practice, “dB” often stands for “dB SPL”. Because the decibel scale is logarithmic, a three-decibel increase in sound level already represents a doubling of [sound] intensity.
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