Extended High-Frequency Smartphone Audiometry: Validity and Reliability.

Background: Extended high-frequency (EHF) audiometry (8-16 kHz) has an important role in audiological assessments such as ototoxicity monitoring, and for speech recognition and localization. Accurate and reliable EHF testing with smartphone technologies has the potential to provide more affordable and accessible hearing-care services, especially in underserved contexts.

Purpose: To determine the accuracy and test-retest reliability of EHF audiometry with a smartphone application, using calibrated headphones.