FIG. 1.

(Color online) Detection thresholds in dB SPL as a function of frequency in kHz for seven HI listeners. Thresholds were measured using 500-ms tones in a three-alternative, forced-choice, adaptive procedure. Also provided in the panels for each listener are the speech level in dB SPL prior to amplification and the signal-to-noise ratio (SNR) in dB used in the consonant tests (e.g., 68/−8), age in years, and pure-tone average in dB HL (averaged over the five octave frequencies between 0.25 and 4.0 kHz).