| Popis: |
Background: to research the level of hearing sensitivity among people of different age groups with normal hearing ability or with hearing impairment. Methods: the results of hearing test of people of different age groups and those of sociological survey are presented here. Result: 66% of examined have no anomalies of hearing ability, 16% of examined showed results, ranging from 75 to 85 percent of normal, hearing level of 18% of examined is ranged from 60 to 70 percent of normal. Conclusion: hearing impairment is caused by enhanced level of sound pressure, loss of hearing acuity is caused by ageing. |
