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What do hearing tests measure?
Member rating: No Rating | Words: | Submitted: Thu Jul 11 2002
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WHAT DO HEARING TESTS MEASURE? Intensity and Frequency Hearing tests measure loudness in decibels (intensity) and pitch in Hertz (frequency). The lowest number of decibels (dB) you can hear at different frequencies (Hz) is measured and plotted on a graph called an audiogram. Frequency: Frequency is the number of vibrations per second, expressed as Hertz (Hz). The sounds of speech are in the range of 250 Hz to 4000 Hz. These are commonly tested in a hearing test. Intensity: Sound waves made by something vibrating gently have little intensity (the sound is soft). If an object vibrates strongly, sound waves have greater intensity (the sound is loud). * When sound waves are made by something vibrating slowly, a foghorn or a drum, a low frequency sound occurs. * When sound waves are made by something vibrating quickly, a whistle or a small bell, a high frequency sound occurs. TYPES OF STANDARD...
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