Fig. 1.

(Color online) Illustration of glimpsing and psychometric function slope. The target sentence, indicated at the top of the panel, is presented at a range of intensities as reflected in waveform shading, from −15 dB SNR (light) to 5 dB SNR (dark). The speech-shaped noise masker (top) and two-talker speech masker (bottom) are shown in gray. Panels at the left show the proportion correct (pc), by keyword, as a function of SNR; these data are hypothetical. In this example, a subset of speech cues is audible at −15 dB SNR for the speech masker but not for the noise masker.