Presenter

Introduction to deafness

• The ear

• Sound

• Degrees of deafness

• Types of deafness

• The impact of deafness

• Resources

6

Oticon: Hearing Centre Online

•www.hearingcenteronline.com/ear2/shtml

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W P

ITC

HL

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PIT

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HIG

H P

ITC

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IGH

PIT

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LOUDLOUD

Profound: > 96dB

Severe: 71 - 95 dB

Moderate: 41 - 70dB

Mild deafness:Mild deafness: Would hear a baby crying or music from a stereo but may be unable to hear whispered conversation.Moderate deafness:Moderate deafness:

Would hear a dog barking or telephone ringing but may be unable to hear a baby crying.

Severe deafness:Severe deafness: Would hear a chainsaw or drums being played but may be unable to hear a piano or a dog barking.

Profound deafness:Profound deafness: May hear a large lorry or aeroplane, would be unable to hear a telephone ringing.

Mild: 20 - 40dB

–www.phonak.com/consumer/hearing/hearinglossdemo.htm

–www.cdc.gov/niosh/mining/topics/hearingloss/hlsoundslike.htm

–www.hear-it.org/forside.dsp?forside=yes&area=24