Noise-vocoding degrades speech by replacing detail with band-limited noise envelopes.

Evidence

Paradoxically, electronic volume compression does not improve intelligibility; in many cases it makes it worse, because it can distort the syllabic amplitude variations that help us understand words. — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 2492 (#corroborates, via linked claim)

Categorization

• corroborated: 3 independent passages support this claim
• XREF: connects to: Signal degradation delays semantic integration and raises listening effort — Dijk, Pim van, Physiology, Psychoacoustics and…, 3951; Beyond audibility, spectral shape of loss drives which speech cues fail; Volume compression worsens speech intelligibility by flattening syllabic amplitude cues — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 2492 (+5 more)

Broader Connections

• Beyond audibility, spectral shape of loss drives which speech cues fail #expands (0.78)
• Volume compression worsens speech intelligibility by flattening syllabic amplitude cues #corroborates (0.75) — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 2492
• More compression channels reduce spectral contrast and vowel recognition #expands (0.72)
• Masking noise prevents listeners from using unintended spectral cues #complicates (0.70)