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I'm sorry I didn't answer the question exactly. Or maybe I didn't answer it correctly. Coz I don't know how to convert hertz to decibels(if it can be converted) and also, I just know 8 examples. This is only what I can remember. Morse code, maximum of few hertz Telephone, 4 000 hertz Hi-fi music, 20 000 hertz Video signals, 5 MHz Dog, 20-40 000 hertz Cat, 80-60 000 hertz Bats, 10-110 000 Hz Dolphins, 110-130 000 Hz
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