✓ Bedroom
25 db
✓ Living room
40 db
✓Office
35 - 45 db
✓Conference
40-60 db
✓Restaurant
40-60 db
✓Laboratory
40-50 db
✓Classroom
30-40 db
✓Library
35-40db
✓Wards
20-35db
✓Traffic
60 - 80db
✓Whispering
20-30 db
✓Auditory fatigue
90 db
✓Maximum acceptable
85db
✓Permanent hearing loss
100db
✓Normal audible
20Hz-20KHz
✓Reference sound
60db
✓Motorcycle
90db
✓Jet plane
150db
✓Tympanic membrane rupture
160db
✓Piano
80db
✓Musician radio
85db
✓Speech radio
80db