| Efficiency of the speakers determines the distance sound will travel and is measured in terms of decibels, the higher the better. |
| The use of the phon as a unit of loudness is an improvement over just quoting the level in decibels. |
| The meter, which comes with instructions, will measure the intensity of the sound in decibels. |
| The Hunter's Ear is designed to compress sounds above 85 decibels into a safe hearing range. |
| Well, it wasn't rock and roll as you would recognise it but there was certainly enough power and decibels to give the lugholes a good stinging. |
| The device can create a sound at 120 decibels, loud enough to disable enemy combatants. |
