Determining the softest level a pure tone can be heard about 50% of the time.

This test using pure tones, measures the softest level a person can hear at a number of different pitches.

Test used to determine hearing sensitivity to pure tones at a fixed hearing level, typically 20 decibels (dB) HL.

Measurement of hearing thresholds to pure tones presented from a small vibrator placed against the skull.

The average of your hearing loss at the following test frequencies. There are two methods. 4-tone method: The first (traditional) method is to average your hearing loss at 500, 1,000, 2,000 & 4,000 Hz using pure tones. The PTA is expressed in decibels (dB). 3-tone method: The current method is to average your hearing loss […]

An hearing testing instrument for generating pure tone sounds at different frequencies.