Variability of High-Frequency Distortion Product Otoacoustic Emissions Measured by the Smartoae Device: Preliminary Study

Abstract

Background: Distortion product otoacoustic emissions (DPOAEs) are usually measured in a frequency range up to 8 kHz, although some systems permit measurements up to 16 kHz. For any test to be reliable it is important to determine its repeatability. Therefore in the present study DPOAE recordings were made using the SmartOAE system with a focus on the repeatability of high-frequency DPOAEs.Material and methods: DPOAEs were measured in subjects with normal hearing from 0.25 to 16 kHz. Recordings were made at frequencies of 0.