Binaural detection advantages do not drive the spatial speech benefit in multitalker settings
Evidence
Results show that degradation of intelligibility for separated speakers is only seen for criterion values of 0 dB and above, indicating a negligible contribution of a BMLD-like detection advantage in multitalker settings. These results show that the spatial benefit is related to a spatial separation of speech components at positive local SNRs rather than to a BMLD-like detection improvement for speech components at negative local SNRs. — Dijk, Pim van, Physiology, Psychoacoustics and…, 1616
Categorization
Category: Causal Relationships
- XREF: Connects to the BMLD literature on tone-in-noise detection and to the broader question of what mechanisms underlie spatial release from masking in cocktail-party listening.
Related
- Spatially separated sources reveal speech components audible only via binaural processing (similarity 0.90)
- Binaural unmasking cannot explain spatial release from masking in multispeaker situations (similarity 0.88)
- Speech elements near masked threshold carry intelligibility only under binaural listening. (similarity 0.87)
- Spatially separated speech sources improve intelligibility through binaural release from masking. (similarity 0.87)
- Binaural listening yields a 5-7 dB intelligibility advantage over monaural (similarity 0.86)
- Binaural listening gives 0 to 8 dB advantage in multi-talker conditions (similarity 0.84)
- Binaural intelligibility level difference measures speech unmasking benefit (similarity 0.84)
- Binaural listening improves source audibility by 0–8 dB in multi-source scenes (similarity 0.84)
- Binaural listening yields only 5–7 dB advantage over monaural spatially-separated sources (similarity 0.84)
- Binaural spatial benefit and SNR degradation act independently on intelligibility (similarity 0.83)
- Binaural detection advantages act on small spectro-temporal units, not whole frequency bands (similarity 0.83)
- Spatial release from masking persists even when target speech components are selectively discarded (similarity 0.82)
- Directional source allocation, not binaural unmasking, explains spatial release (similarity 0.82)
- Reduced target audibility, not spatial processing loss, explains much of the hearing-loss speech deficit (similarity 0.82)
- Binaural advantage is modeled as a within-band noise-floor reduction improving SNR (similarity 0.82)
Broader Connections
- Binaural spatial benefit and SNR degradation act independently on intelligibility
#corroborates(0.85) — Dijk, Pim van, Physiology, Psychoacoustics and…, 1659 - Spatially separated sources reveal speech components audible only via binaural processing
#qualifies(0.78) — Dijk, Pim van, Physiology, Psychoacoustics and…, 1626 - Binaural listening improves source audibility by 0–8 dB in multi-source scenes
#qualifies(0.75) — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 1535 - Binaural detection advantages act on small spectro-temporal units, not whole frequency bands
#expands(0.72) — Dijk, Pim van, Physiology, Psychoacoustics and…, 1623 - Binaural listening yields a 5-7 dB intelligibility advantage over monaural
#qualifies(0.72) — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 1514 - Contralateral efferent-mediated processing can spatially segregate concurrent speech sources by ear
#complicates(0.72) — Dijk, Pim van, Physiology, Psychoacoustics and…, 1978