Abstract
A set of ten digitized statistically similar Gaussian maskers was used in one-internal tone-in-noise detection experiments under diotic (NoSo) and dichotic (NoSp) interaural conditions. Stimulus/response matrices were generated for each masker in the presence or absence of a target 500-Hz tone. For both NoSo and NoSπ, nonparametric analyses show that response probabilities and sensitivities vary significantly across noise waveforms, indicating a considerable external noise component in subject response variability. A parametric model is developed that maps individual stimulus waveforms onto a decision axis, facilitating evaluation of internal/external noise variance ratios. For both NoSo and NoSπ, internal and external noise variance are of similar magnitude.
Original language | English (US) |
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Pages (from-to) | 2122-2128 |
Number of pages | 7 |
Journal | Journal of the Acoustical Society of America |
Volume | 86 |
Issue number | 6 |
DOIs | |
State | Published - Dec 1989 |