Effects of flanking component spectral position and modulation pattern on thresholds for signals presented in the peaks of a modulated tonal masker

摘要

Detection of signals added solely to the peaks of an on-frequency modulated masker has never been found to improve after adding flanking components (FCs) at remote frequencies. However, according to theories underlying comodulation masking release (CMR), adding comodulated FCs could provide cues that improve signal detection for signal-peak placement. A reason masking release was not found with peak placement might be because of processes underlying modulation detection interference (MDI). This possibility was further investigated by using FCs that could diminish MDI but still provide signal detection cues associated with theories of CMR. It seemed that a peripheral within-channel and a central across-channel mechanism underlying MDI could hinder signal detection for signal peak placement.