A BMLD effect predicts SRM decline when mid-SNR components are deleted

Evidence

Should a BMLD-like effect indeed act at the level of small spectro-temporal regions, then deletion of target speech from spectro-temporal regions with local SNR values between ‑15 and 0 dB (i.e. between dichotic and diotic masked thresholds, Hirsh ( 1948 )), should degrade speech intelligibility for separated, but not for collocated sources, since those speech components would be inaudible in a collocated configuration anyway. This implies that over this same range of SNR criteria the spatial release from masking, as measured by the difference in performance between separated and collocated source configurations, should decrease. — Dijk, Pim van, Physiology, Psychoacoustics and…, 1619