Intraglottal aerodynamic pressure and energy transfer in a self-oscillating synthetic model of the vocal folds
Bibliographic record
Abstract
Self-sustained oscillations of the vocal folds during phonation are the result of the energy exchange between the airflow and the vocal fold tissue. Understanding this mechanism requires accurate investigation of the aerodynamic pressures acting on the vocal fold surface during oscillation. A self-oscillating silicone vocal fold model was used in a hemilaryngeal flow facility to measure the time-varying pressure distribution along the inferior-superior length of the vocal fold with a spatial resolution of 0.254 mm, and at four discrete locations in the anterior-posterior direction. It was found that the intraglottal pressures during the opening and closing phases of the vocal fold are highly dependent on three-dimensional and unsteady flow behaviors. The measured aerodynamic pressures and estimates of the medial surface velocity were used to compute the intraglottal energy transfer from the airflow to the vocal folds. The energy was greatest at the anterior-posterior midline, and decreased significantly toward the anterior/posterior endpoints. The net energy transfer over an oscillation cycle was positive, consistent with the theory of energy exchange during phonation. The findings provide insight into the dynamics of the vocal fold oscillation and the potential causes of some vocal fold disorders.
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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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 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 | 0.001 |
| 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".