dB (dBa) and Sone: How do they relate? - Overclock.net - An Overclocking Community
The sone is a unit of perceived loudness after a proposal of S. Smith Stevens in 1936. In acoustics, loudness is a subjective measure of the sound pressure. One sone is equivalent to 40 phons, which is defined as the loudness of a 1 kHz tone at 40 dB SPL....