Lecture 10 Hearing Impairments .doc

Lecture 10 Hearing Impairments What are the major parts of human earOuter ear Middle ear inner What is the severity classifications based onhearing acuity and frequency responseare measured in terms of decibels dB and hertz Hz What is a decibela unit of intensity or loudness The number of decibels indicates the degree of loudness What does the frequency The cycles per second or frequency of sounds hertz Hz indicates the pitch of sound Most English sounds fall in the range of 500 to 2000 Hz the speech range What is a common way to classify individuals who are hearing impaired by the degree of hearing impairment whether mild moderate severe or profound What do intensity dB and sound frequency Hz determineMeasures of loss of sound determine the extent of the hearing impairmentWhat is hearing impairmenta generic term indicating a hearing disability that may range in severity from mild to profound