Common sounds - Loudness - Decibels
• Silence - No Sound - 0
• Whispering - Faint - 20
• Talking - Moderate - 30 to 60
• Traffic on fairly busy roads - Loud - 75
• Noisy factories, generators - Very loud - 100
• Jet plants and pneumatic drills - Deafening - 115 to 200
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