Guide for flanking sound transmission in wood framed construction - airborne sources
Bibliographic record
Abstract
This paper reports results from continuing studies of sound transmission between adjacent units in wood-framed multi-dwelling buildings conducted at in the Flanking Transmission Facilities at IRC/NRC. The paper examines how common construction details affect structure-borne (flanking) transmission between adjacent rooms. Previous reports from our multi-year experimental study showed that the dominant flanking path between horizontally, vertically and diagonally separated rooms typically involved the exposed surface of the floor. This paper reports on the most recent study, which revealed that there are a number of other transmission paths involving the sidewalls, and ceilings, which become collectively important once the more obvious paths are addressed. Estimates of the apparent sound insulation were obtained by summing the energy transmitted directly through the separating wall or floor assembly with that for all the flanking paths involving the wall/floor/ceiling surfaces abutting the separating construction. These estimates provide the basis for a design guide [ ] to predict sound isolation in typical wood-framed row housing or apartment buildings.
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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 | 0.003 |
| Meta-epidemiology (narrow) | 0.002 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.004 | 0.002 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.002 |
| Open science | 0.003 | 0.001 |
| Research integrity | 0.002 | 0.002 |
| Insufficient payload (model declined to judge) | 0.065 | 0.059 |
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".