Two equal-level talkers yield a global SNR about 11 dB below each single masker

Evidence

Masking-period patterns produced by these maskers and test tones are indicated in Fig. 4.32c with masker level as the parameter. Below 75 dB of the 100-Hz masker, no masking occurs. For 85 dB, masking is larger for that part of the period of the masker during which rarefaction occurs. … It is interesting to note that in the region of the condensation maximum, which is in the middle of the pattern, masked threshold becomes even lower than the threshold in quiet indicated by the arrow on the right ordinate of Fig. 4.32c. — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 570 (#complicates, via linked claim)

Categorization

• XREF: connects to: Reducing audible fluctuations in a masker lowers post-masked thresholds by up to 24 dB — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 570

Broader Connections

• Reducing audible fluctuations in a masker lowers post-masked thresholds by up to 24 dB #complicates (0.72) — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 570