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. Author manuscript; available in PMC: 2008 Oct 27.
Published in final edited form as: J Acoust Soc Am. 2006 Aug;120(2):978–990. doi: 10.1121/1.2213573

FIG. 4.

FIG. 4

Effect of equalizing the overall modulation depth in the two observation intervals after the signal was added. (a) Example wave forms: masker depth=-13 dB rms; signal added to target interval masker at a +20 dB SNR. (b) Increases in thresholds over comparable fixed-level conditions (absolute thresholds are shown along with model predictions in Fig. 7). Individual listener standard deviations are shown above the corresponding means [(b), top panel].