Mapping the vibroacoustic behavior of harp soundboxes.
Bibliographic record
Abstract
Modern harp soundboxes typically consist of a thin soundboard made of an acoustic wood with a definite set of resonances, and a relatively heavy conical or polygonal back in which there are several holes. These holes exist to allow access to the string attachments but also have important acoustical properties. Harps more than 200 years old frequently have small holes in the soundboard itself, and none in the back. The quality of the sound radiation from a harp is determined in large measure by the vibrational behavior of the soundboard and the motion of air in the soundholes. Using an impact hammer, accelerometer and acoustic-velocity probe, we have mapped the velocity of a harp soundboard, and that of the air in the soundholes, in response to excitation at the string attachment points. The relationship between these motions is complex but also crucial in determining the quality of the instrument.
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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 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.002 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| 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".