hearing frequencies

Source

Intensity level in decibels (dB)

Threshold

0dB

Whisper

20dB

Conversational speech

60dB

Kerb side of busy road

70dB

Vacuum cleaner

80dB

Large orchestra

98dB

Walkman at maximum level

100dB

Front rows of rock concert

110dB

Threshold of pain

130dB

30m from jet takeoff

140dB

Explosion (instant perforation of ear drum)

160dB

 

Frequency response of the human ear is 20Hz to 20 kHz and the frequency range of normal speech is 800Hz-4 kHz. With age a person tends to lose some of their hearing mostly at the higher frequencies.

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~ by pcl4 on August 12, 2008.

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