Signal detection theoretic analysis of auditory processing: Phase uncertainty and multiple channel integration

Abstract

Traditionally, psychophysical data has been predicted either by constructing models of the peripheral auditory system or by using signal detection theory. The resulting theoretical detection performance is often substantially greater than experimental results and this discrepancy has been explained by adding '[internal noise" to the system. An integrated approach combining both a physiologically-based auditory model and clwsical signal detection theory has been shown to produce more accurate predictions of experimental data (1). The work presented here investigates the impact of ph~e uncertainty and multiple channel integration on predicted detection performance.