Loss of externalisation when one earphone is deactivated may boost apparent loudness summation

Evidence

Experiment 1 demonstrated for the first time that binaural loudness constancy can be observed in a loudness matching task using direct comparisons of loudness between an occluded and unoccluded second ear. Experiment 2 showed that this effect could be partially mediated by the residual sound at the occluded ear, but the remaining effect would seem attributable to the listeners’ awareness of the occlusion. — Dijk, Pim van, Physiology, Psychoacoustics and…, 1562 (#expands, via linked claim)

Categorization

• XREF: connects to: Occluding one ear in a sound field dramatically reduces binaural loudness summation — Dijk, Pim van, Physiology, Psychoacoustics and…, 1544; Meatal occlusion dropping one ear’s loudness 52 percent should still produce measurable summation; Low-frequency residual sound may contribute disproportionately to binaural loudness (+3 more)

Broader Connections

• Low-frequency residual sound may contribute disproportionately to binaural loudness #expands (0.85)
• Binaural loudness constancy depends on residual low-frequency cues and knowledge of ear occlusion #expands (0.82) — Dijk, Pim van, Physiology, Psychoacoustics and…, 1562
• Residual sound at an occluded ear mediates part of loudness constancy #expands (0.80)
• Perceived loudness does not map one-to-one onto acoustic amplitude #corroborates (0.75) — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 616