Using the Parameters of Definition, D50, and Reverberation Time, RT, to Investigate the Acoustic Quality of Classrooms
Bibliographic record
Abstract
The parameters of Definition, D50, and Reverberation Time, RT, described in the ISO 3382-1:2009 standard, were used in this study to evaluate the acoustic quality of classrooms which had been renovated. Following the aforementioned ISO standard, D50 and RT were measured via the impulse response method, using DIRAC 3.1 software. The analysis of RT in the classrooms after their renovation shows that this parameter increased, indicating that the quality of acoustic environments designed for the modern classroom is deteriorating. The analysis of the measured values of D50 led to the conclusion that, notwithstanding the increase in RT, many points inside the classrooms displayed good acoustic quality. This finding suggests that evaluations of the acoustic quality of classrooms should involve not only the analysis of RT but also of the parameter of Definition, D50.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
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 teacher head, 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".