Children’s detection of tonal signals in roving level noise maskers
Bibliographic record
Abstract
Preschool-aged children’s masked detection thresholds have been measured at S/N levels for which the level of the signal plus masker exceeds that of the masker alone by approximately 6 dB and for which the temporal fine structure of the masked signal approximates that of the signal alone [Allen et al., J. Acoust. Soc. Am. 104, 2997–3005 (1998); P. Allen and L. Korpela, ibid. 105, 1152(A) (1999)]. When level information is removed through randomization of masker levels, children could rely on temporal fine structure changes for detection. This study asked children and adults to detect 500-, 2000-, and 4000-Hz tonal signals presented in roving level maskers centered at 10- or 25-dB N0. Thresholds for some children remained consistent with previous data in fixed-level conditions at all frequencies suggesting that temporal fine structure information may have been used by them, even at frequencies where its coding is subject to phase locking limitations. However, there were large individual differences with many children performing very poorly. [Work supported by NSERC.]
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.006 |
| Meta-epidemiology (narrow) | 0.000 | 0.001 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.002 | 0.001 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".