Can Listeners Catch Approaching Sound Sources?
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A growing empirical literature suggests that there is visual information for temporally tuned perceptual-motor behaviors controlled primarily by time-to-contact (ttc) information, often termed tau. At the present time acoustic tau research is rather limited: Schiff and Oldak (1990) and Wuestefeld, Rosenblum and Saldana (1992) demonstrated that-within certain limitations-observers are generally capable of using acoustic information to judge time-to-contact (ttc). Lee (1990), B. K. Shaw, McGowan and Turvey (1991), and Guski (1992) discussed theoretical problems of conceptualizing an acoustic tau.