Dean Garstecki Sound Quotations

Insert earphones can boost the signal by as much as six to nine decibels. That's about the difference between the sound of a vacuum cleaner and a motorcycle. It's a significant difference.

That's the difference in intensity between the sound made by a vacuum cleaner and the sound of a motorcycle engine.

That's a sound level that's equivalent to the measures that are made at rock concerts. And it's enough to cause hearing loss after only about an hour and 15 minutes.