What is the suggested level of noise that people can tolerate without damage to their hearing?
60 dB
85 dB
110 dB
120 dB
Daily maximum tolerable sound level to human ear : 85-90 dB. Human ear is sensitive to sound frequency: 20-20,000 Hz. Auditory fatigue appears in: 90 dB. Sound level above which tympanic membrane rupture: 150 - 160 dB. Permanent hearing loss : >100 dB. Hospital ward, permissible level of sound : 22-35 dB. Normal conversation: 60-70 dB.
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