How is the two-tone pure tone average calculated?

The calculation of the two-tone pure tone average primarily focuses on identifying the two frequencies that exhibit the least amount of hearing loss in an audiometric evaluation. By selecting these two frequencies, you can obtain a more precise representation of a person's hearing ability and responsiveness at critical ranges of the auditory spectrum. Averaging these two frequencies is particularly useful in determining the appropriate fitting for hearing aids, as it reflects the hearing level where the individual is most likely to benefit from amplification.

This approach emphasizes the importance of working with frequencies that yield the best auditory response, thus ensuring that the average calculated is specific to the individual's hearing profile. This allows practitioners to tailor their interventions more effectively by focusing on frequencies where the patient retains better hearing capabilities.