SNR just-noticeable difference grows from about 3 to 3.7 dB at positive reference SNRs
Evidence
The results are shown in Table 1 . The SNR JNDs at the three SNR references of ‑6, 0 and + 6 dB SNR were 2.8, 2.9, and 3.7 dB respectively; the first two were statistically no different and both less than the third [t (91.3) = 4.07; p = 0.0001 and t (121.4) = 4.11; p = 0.00007, respectively]. — Dijk, Pim van, Physiology, Psychoacoustics and…, 5676
Categorization
- XREF: This is a core psychophysical figure for any writing about hearing-in-noise and audibility thresholds; connects to the reader’s physiological/psychoacoustic interest in discrimination limits. — connects to: The just noticeable difference in signal-to-noise ratio for speech is about 3 dB — Dijk, Pim van, Physiology, Psychoacoustics and…, 5674; SNR must rise at least 3 dB before listeners tolerate one more conversation — Dijk, Pim van, Physiology, Psychoacoustics and…, 5697; A 3 dB SNR just-noticeable difference corresponds to a 26% intelligibility change in listeners. — Dijk, Pim van, Physiology, Psychoacoustics and…, 5669 (+1 more)
- corroborated: 2 independent passages support this claim — Dijk, Pim van, Physiology, Psychoacoustics and…, 5676
Broader Connections
- A 3 dB SNR just-noticeable difference corresponds to a 26% intelligibility change in listeners.
#expands(0.90) — Dijk, Pim van, Physiology, Psychoacoustics and…, 5669 - Pure level changes are rated as valuable as SNR changes despite not aiding intelligibility
#complicates(0.80)