Science of Sound - Bell Telephone Laboratories (Lectures) - 4. Intensity | Текст песни

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• Science of Sound - Bell Telephone Laboratories (Lectures)
• 4. Intensity

Measuring sound intensity; standing waves; the decibel.
The average human ear has a maximum dynamic range of about 130 db between the threshold of hearing and the threshold of feeling. Since the range of ordinary phono-graphs is limited, we haven't attempted to demonstrate an intensity range of more than about 40 db.