Reverberation time and signal-to-noise ratio map onto the same speech intelligibility scale

Evidence

If that were not enough, he also made substantial contributions to our knowledge of speech perception and developed a tool (originally called the Articulation Index, now revised to the Speech Intelligibility Index [SII]) that allows one to calculate the amount of speech information available in different frequency bands. The SII is able to robustly predict intelligibility scores for certain speech materials and acoustic environments (ANSI- 3.5, 2017) and is now used in industrial applications and to assess the impact of hearing loss on speech perception. — Jennifer Lentz, Psychoacoustics- Perception of Normal…, 90 (#corroborates, via linked claim)

Categorization

• XREF: connects to: Speech intelligibility in rooms can be predicted from fluctuation strength — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 2059; Speech intelligibility can be predicted by measuring signal envelope modulation decay; Speech intelligibility indexes average signal-to-noise ratio across critical bands — Jennifer Lentz, Psychoacoustics- Perception of Normal…, 90

Broader Connections

• Speech intelligibility indexes average signal-to-noise ratio across critical bands #corroborates (0.95) — Jennifer Lentz, Psychoacoustics- Perception of Normal…, 90