Converter
loudness · Psychoacoustics · Modern
sone
reference-only
- Record
- M568
- Definition quality
- Standardized
- Conversion mode
- reference only
- Calculator
- Requires named inputs
Definition
The sone expresses perceived loudness rather than sound pressure; standardized loudness methods estimate it from measured sound.
History & use
ISO 532-1 specifies methods for estimating loudness and loudness level for normal-hearing listeners under defined conditions.
Modern use
Modern use is context-dependent and varies by region or measurement system.