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Estimates of the FMB for each set size for the (a) 4-HZ SAM, (b) 32-Hz SAM and (c) interfering-talker masker conditions. FMB estimates were derived by fitting curves to the psychometric-function data (Fig. 3) and determining the difference in SNR (relative to stationary noise) required in a given fluctuating-masker to achieve the performance level associated with a given stationary-noise SNR. Error bars indicate standard deviations of the FMB estimation error.
