Speech intelligibility in rooms can be predicted from fluctuation strength

Evidence

In rooms with long reverberation time, fluctuation strength may be reduced, although the source is the same. Measurements of speech intelligibility and fluctuation strength undertaken in rooms of different characteristics have indicated that speech intelligibility in a room can be predicted using the psychoacoustical model of fluctuation strength. — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 2059

Measurements of speech intelligibility and fluctuation strength undertaken in rooms of different characteristics have indicated that speech intelligibility in a room can be predicted using the psychoacoustical model of fluctuation strength. — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 2059

Categorization

• corroborated: 3 independent passages support this claim — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 2059
• XREF: connects to: Room intelligibility can be predicted from impulse response and noise levels; Speech intelligibility can be predicted by measuring signal envelope modulation decay; Speech intelligibility depends on high direct-to-reverberant sound ratios — David Howard, Jamie Angus, coustics and Psychoacoustics, 2434 (+7 more)

Broader Connections

• Speech intelligibility depends on conserving envelope modulation through a channel #expands (0.90)
• Speech intelligibility can be predicted by measuring signal envelope modulation decay #expands (0.88)
• Room intelligibility can be predicted from impulse response and noise levels #expands (0.85)
• Direct sound carries signal information uncontaminated and governs speech intelligibility #corroborates (0.80) — David Howard, Jamie Angus, coustics and Psychoacoustics, 1729
• Speech intelligibility depends on high direct-to-reverberant sound ratios #complicates (0.75) — David Howard, Jamie Angus, coustics and Psychoacoustics, 2434
• Early room reflections benefit speech intelligibility as much as raised direct sound level #expands (0.72) — Toole, Floyd E, Sound reproduction- the acoustics and…, 557
• Reverberation time and signal-to-noise ratio map onto the same speech intelligibility scale #contradicts (0.72)
• Speech intelligibility tolerates group delay changes up to about 100 ms #complicates (0.72)
• Sound’s constant speed across wavelengths is what preserves speech intelligibility #complicates (0.70)