| Answer | Crossword Clue |
|---|---|
| BEL | Unit indicating loudness |
| PHON | Loudness unit |
| BEL | Loudness unit |
| DECIBEL | Loudness unit |
| SONE | Loudness unit |
| SONE | Unit of loudness |
| BEL | Unit of loudness |
| PHON | Unit of loudness |
| PHON | Unit measuring loudness |
| DECIBEL | Unit of loudness |
| PHON | Unit of loudness. |
| BEL | It's ten times the usual loudness unit |
