Abstract
A forward masking paradigm [T. Houtgast, J. Acoust. Soc. Am. 51, 1885–1894 (1972)] was used to examine two‐tone suppression as a function of four signal frequencies (500. 1000, 2000, and 4000 Hz). Data revealed (a) a measure of the critical band at each of the signal frequencies, (b) an effective region of suppression beyond the CB of the signal, and (c) the effects of suppression increased (in dB) and expanded (broader frequency range) as a function of the increase in signal frequency. In general, a suppressor tone will effectively increase signal detectability when the suppressor lies beyond the CB of the signal; a reduction of signal detectability occurs when the suppressor is within the CB.
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