Hearing-impaired level just-noticeable-differences are about 1 to 2 dB
Evidence
At average MAAs (< 35° for HI) level-cue magnitudes (< approximately 1 dB) were found to be smaller than the level just-noticeable-differences for HI test subjects reported to be 1–2 dB (Moore 2003 ). — Dijk, Pim van, Physiology, Psychoacoustics and…, 3124
Categorization
Category: Factual Claims
Related
- Level differences at typical MAAs stay below just-noticeable-differences for hearing-impaired listeners (similarity 0.92)
- Level differences at typical MAAs fall below the 1-2 dB just-noticeable difference (similarity 0.87)
- Hearing-impaired listeners rely on spectral not level cues at threshold (similarity 0.87)
- Hearing-impaired listeners vary more than normal hearers in quiet threshold, complicating averaging (similarity 0.85)
- Hearing-impaired listeners in these tests had moderate symmetric sloping losses (similarity 0.84)
- Level differences alone are too small to drive minimum audible angle discrimination (similarity 0.84)
- Just-audible image displacement needs only 1 to 2 dB level change. (similarity 0.84)
- Humans discriminate level differences of under half a decibel across a 100 dB range (similarity 0.83)
- Hearing-impaired subjects localized via pinna frequency shaping, not level differences (similarity 0.82)
- Enhanced cues still leave hearing-impaired MAA far above normal-hearing performance (similarity 0.82)
- Humans can typically discriminate level differences of 1 to 2 dB (similarity 0.82)
- Hearing-impaired listeners gain far less from noise gaps than normal listeners (similarity 0.82)
- Mild SNHL elevates thresholds from 15 to 30 dB across frequency (similarity 0.82)
- Humans detect level changes of about 1 dB at moderate volumes (similarity 0.82)
- Hearing-impaired listeners need a 15 dB UCL-to-threshold gap for audible amplified stimuli (similarity 0.82)