The Impact of Masker Fringe and Masker Sparial Uncertainty on Sound Localization

Signal-in-noise detection improves when the masker duration extends beyond that of the signal masker fringe relative to the case in which the signal and masker are pulsed onoff simultaneously. This improvement has been attributed to the fact that the fringe provides a baseline set of stimulus parameters that serves as a context against which a signal may be detected. Conversely, when the fringe parameters are inconsistent with those of the masker, signal detectability may be reduced. In this study, the impact of masker fringe on sound localization is examined. The results demonstrate the importance of stimulus parameters prior to and subsequent to the portion of the stimulus containing the signal for sound localization.