Reverberation disrupts periodicity-based speech segregation only when pitch is intonated

Evidence

In line with human psychoacoustic data, we find reverberation significantly impairs segregation when vowels have an intonated pitch contour, but not when they are spoken on a monotone. In contrast, noise impairs segregation independent of intonation pattern. — Dijk, Pim van, Physiology, Psychoacoustics and…, 5022 (#complicates, via linked claim)

The effect of reverberation and early reflections is to mask the stops and bursts associated with consonants. They can also blur the rapid formant transitions that are also important cues to different consonant types. Clearly the degradation will depend on both the reverberation time and the relative level of the reverberation to the direct sound. One would expect longer reverberation times to be more damaging than short ones. — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 2455 (#qualifies, via linked claim)

Categorization

• XREF: connects to: Noise and reverberation damage speech segregation through different neural mechanisms — Dijk, Pim van, Physiology, Psychoacoustics and…, 5022; Reverberation degrades neural pitch coding far more for intonated than steady speech; Reverberation masks consonant stops and blurs the formant transitions essential to speech — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 2455 (+3 more)

Broader Connections

• Reverberation degrades neural pitch coding far more for intonated than steady speech #corroborates (0.95)
• Noise and reverberation damage speech segregation through different neural mechanisms #complicates (0.85) — Dijk, Pim van, Physiology, Psychoacoustics and…, 5022
• Reverberation masks consonant stops and blurs the formant transitions essential to speech #qualifies (0.82) — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 2455
• Periodicity differences segregate concurrent sounds only under idealized quiet conditions #qualifies (0.80) — Dijk, Pim van, Physiology, Psychoacoustics and…, 5026
• Temporal envelope suffices for speech while fine structure carries pitch information #expands (0.78) — Dijk, Pim van, Physiology, Psychoacoustics and…, 3381
• Complex listening relies on higher-level signal segregation beyond energetic masking #expands (0.75)