Pure tones all frequencies for best practice Start at 30 dB, no response jump to 50 dB, no response jump up 20 dB
Pure Tone Audiometry
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Frequencies tested: 250, 500, 1000, 2000, 4000, 8000 Hz
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Procedure: Modified Hughson-Westlake (down 10 dB, up 5 dB)
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Threshold: Softest level a tone is heard 50% of the time
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Symbols:
- Right ear (unmasked): O
- Left ear (unmasked): X
- Right ear (masked): △
- Left ear (masked): □