Sone - 187 __link__ 〈HD〉

In the lexicon of psychoacoustics, the sone is a deceptively simple creature. Unlike the decibel—a relative measure of pressure—the sone is linear. One sone is defined as the loudness of a quiet, 1 kHz tone at 40 dB SPL. Two sones sound twice as loud. Forty sones sound forty times as loud.

At , the linear scale ceases to be academic and becomes visceral. sone - 187

187 sones converts to approximately 120 decibels —the threshold of human pain. But the sone value tells a more terrifying story: it is nearly five times louder than that shouting match. It is the roar of a jet engine from 50 meters, the blast of a rock concert’s subwoofer stack, the sound of a .357 Magnum fired in a concrete stairwell. In the lexicon of psychoacoustics, the sone is

To answer, we must abandon the laboratory. At 40 sones (roughly 70 dB), you are standing next to a running vacuum cleaner. At 80 sones (85 dB), it’s heavy city traffic inside your skull. At 100 sones (90 dB), a shouted conversation becomes a battle. Two sones sound twice as loud

But what happens at ?