High-Frequency Hearing Threshold Measurements Using Insert Earphones and Warble Signals

摘要

The purpose of the present study was to determine the feasibility of reducing intersubject variability of high-frequency hearing thresholds by using insert earphones and frequency-modulated (warble) tones. Forty listeners with normal hearing in the conventional audiometric range (125-8000 Hz) participated in the study. Hearing thresholds were measured at 10, 12, 14, 16, and 18 kHz with circumaural (HD-250) and insert (ER-1) earphones using pure tones and 2% and 5% frequency-modulated FM (warble) tones. Obtained results demonstrated significantly smaller intersubject variability of hearing thresholds measured with insert earphones and 5% FM tones in comparison to all other test conditions.