Frequency-Selective Detection of Signals in Noise

Abstract
A probe-signal method was developed and used to study differential detection as a function of the signal frequency when observers were instructed to listen for signals of a single fixed frequency. All signals were presented in a continuous background of noise, with a two-alternative temporal forced-choice procedure. Response characteristics were found that are consistent with the idea of an underlying frequency-selective mechanism similar to a fairly narrow bandpass filter. A discussion is given of various applications of the method to produce data that will identify the strategies that an observer uses to process certain auditory stimuli selectively. [Work supported by the National Institute of Neurological Diseases and Blindness, National Institutes of Health, Public Health Service, U. S. Department of Health, Education, and Welfare.[

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