ASA 127th Meeting M.I.T. 1994 June 6-10

4aPP2. An asymmetric roex filter model for describing detection of silent temporal gaps as a function of marker frequency separation.

Dept. of Otolaryngol.---HNS, Johns Hopkins Univ. School of Medicine, Baltimore, MD 21287

T. G. Forrest

Cornell Univ., Ithaca, NY 14853

Formby and Forrest [J. Acoust. Soc. Am. 89, 830--837 (1991)] measured temporal gap detection (TGD) thresholds as function of frequency separation between two sinusoids marking a silent temporal gap. Their results were fit well with a roex-filter model. Filter estimates (1) were based on TGD thresholds for post-gap marker frequencies F[sub 2]> pre-gap marker frequencies F[sub 1] and (2) assumed symmetry of the roex-filter function for F[sub 2]F[sub 1] were typically shallower than those fitted for conditions of F[sub 2]