Abstract
Wilbanks and Whitmore [J. Acoust. Soc. Amer. 43, 785–797 (1968)] have reported that any sizeable binaural assistance in detecting signals in correlated noise of moderate intensity is confined to signal frequencies between 225 and 1200 Hz. They suggest that their failure to obtain substantial MLD's with signals below 200 Hz was due to the low noise level employed. The present work shows this to be the case. With correlated noise, MLD's for 150-Hz monaural and binaural signals increase from 0 and 4 dB, respectively, to 9 and 15 dB as the spectrum level of the masker is raised from +10 to +55 dB. Several hypotheses as to why the size of the binaural advantage for detection depends upon the level the masking noise will be discussed. [Research supported by National Science Foundation and Office of General Research, University of Georgia.]
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