One of the mysteries of the English language finally explained.
A unit of subjective loudness, equal to 40 phons.
- ‘At the quieter end of the spectrum, you'll find ones rated at a much quieter 2.5 sones, and the price goes up to about $100.’
- ‘Technically, one sone equals a 1-khz tone at 40 dB SPL (Sound Pressure Level).’
1930s: from Latin sonus ‘a sound’.
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