Fig. 1.

Representative stimuli for the three test conditions, ΔF _C = 0, 2, and 4 kHz, in both the time (LEFT) and frequency domains (RIGHT) for the four representative SNR conditions: SNR 60, 30, 0, and −5 dB. For the time-domain waveforms in BLUE ON THE LEFT, X-AXIS represents time in ms, and Y-AXIS represents normalized amplitude. The waveforms shown are for the ΔF _C = 0 condition, though the stimulus envelope remains largely unchanged between the three conditions. For the stimuli in the frequency domain (RIGHT), sAM1_FL is shown as BLACK LINES, and sAM2_VL is shown as RED LINES, with the X-AXIS representing frequency in kHz and Y-AXIS representing relative sound levels in dB.