| The noise levels rose by more than a few decibels, while the games whizzed by at such speed that they made Concorde look slow. |
| 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. |
| Mr. Russell apparently had not overheard the conversation, as the din in the room had risen a few decibels. |
| In the Stotts' front garden, they found sound levels reached 97.8 decibels, which can cause serious damage to the ears. |
| According to the results, the noise on Sunday was 58 decibels, compared to 80 decibels on Friday afternoon. |
