Source	Sound Power Level, dB re 10-12W	Sound Pressure Level, dB re 20*10-6
		1 meter	10 meters	60 meters
Saturn Rocket	200	185	165	150
Four-engine jet liner	180	155	135	120
Threshhold of Pain	160	130	*	*
Large Orchestra	140	115	105	90
Busy Street	120	100	90	75
Silenced Rock Drill Compressor	*	85	73	60
Super-silenced Compressor	100	80	68	53
Normal Converstation	80	60	40	25
Refrigerator	60	40	25	10
Whisper	40	25	5	0
Rustling Leaf	20	*	*	*
Threshold of Hearing	0	0	0	0