Research on auditory detections of complex sound signals in noise

Through direct comparisons of detection performances of human auditory system with two typical signal detectors, it has been found that, the auditory detection of sound signals with completely known modes of frequency variation in noise can be described as a tone-correlator, however, it would act as an energy detector for sound signals with unknown modes of frequency variation. In addition, quantitative differences of auditory sensitivities to three typical signals (i.e. single FS, linear FS and random FS) and the relation between auditory sensitivity and signal duration have been derived through experimental studies.