The role of excitation-pattern cues in the detection of frequency shifts in bandpass-filtered complex tones

摘要: One task intended to measure sensitivity temporal fine structure (TFS) involves the discrimination of a harmonic complex tone from in which all harmonics are shifted upwards by same amount hertz. Both tones passed through fixed bandpass filter centered on high reduce availability excitation-pattern cues and background noise is used mask combination tones. The role frequency selectivity this “TFS1” was investigated varying level. Experiment 1 showed that listeners performed more poorly at level than low 2 included intermediate levels performance deteriorated for above about 57 dB sound pressure 3 estimated magnitude variation forward masking pure as function shift There negligible variation, except lowest used. results indicate changes excitation threshold TFS1 would be too small usable. consistent with being using TFS cues, having an indirect effect via its influence cues.