Spatial release from masking persists even when target speech components are selectively discarded

Evidence

An experiment in which spectro-temporal regions from the target speech signal were removed according to a variable local SNR criterion gave no indication for any BMLD-like detection advantage. The results of the experiment showed a decrease in speech intelligibility when elements with a local SNR of 0 dB and larger were removed from the target speech, suggesting that speech elements at local SNRs above ‑4 dB did contribute to speech intelligibility. Interestingly, this was the case for both the collocated and spatially separated speaker configurations. The spatial release from masking appeared to be independent of the extent to which lower-SNR components were removed from the target signal. — Dijk, Pim van, Physiology, Psychoacoustics and…, 1619

Categorization

• QUESTION: How does spatial release from masking arise if not through binaural unmasking of sub-threshold components?
• corroborated: 5 independent passages support this claim — Dijk, Pim van, Physiology, Psychoacoustics and…, 1619
• XREF: connects to: Spatially separated sources reveal speech components audible only via binaural processing; Contralateral efferent-mediated processing can spatially segregate concurrent speech sources by ear; Inverting signal phase at one ear vastly releases speech from masking. — Jennifer Lentz, Psychoacoustics- Perception of Normal…, 1550

Broader Connections

• Inverting signal phase at one ear vastly releases speech from masking. #exemplifies (0.85) — Jennifer Lentz, Psychoacoustics- Perception of Normal…, 1550
• Contralateral efferent-mediated processing can spatially segregate concurrent speech sources by ear #expands (0.75)