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Updated: August 5, 2026
Third the pitch, high or low, which is controlled by the distance from crest to crest of the sound-waves or, as we say, from node to node of the vibrations. To the most sensitive human ear, the highest limit of audibleness is reached by sound-waves estimated at twenty-eight-hundredths of an inch from node to node equal to 48,000 vibrations per second.
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