Detection of signals with identical energy spectra but different waveforms under conditions of signal uncertainty.
Previous research has shown that a signal which may be one of two pure tones will be less detectable than a signal that is of constant, known frequency. In the present study, the effect of waveform uncertainty was evaluated by using pulse-train signals with identical power spectra but different phase spectra. Results for a group of 11 listeners suggest that when differences in the energy spectra of signals are eliminated, signal uncertainty has, at best, a small effect on detection performance.
D000161:Acoustic Stimulation; D000328:Adult; D001307:Auditory Perception; D006801:Humans