Case study: Sub-metamaterials for Broadband Aircraft Noise Reduction Across Low and High Frequencies
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
Controlling broadband noise across the entire frequency spectrum, from low to high frequencies, poses a significant challenge for the aerospace, transportation, and construction industries. Recent research has primarily focused on low-frequency noise control solutions using acoustic metamaterials, but these materials are often limited by their narrow-band resonances. This paper addresses this limitation by presenting a novel sub-metamaterial system that broadens the resonance frequency band from low to high frequencies through a parallel assembly of sub-metamaterials. The proposed system comprises an arrangement of structured metamaterials and Helmholtz Resonators embedded in a layer of glass fiber. By meticulously grouping individual resonant frequencies, this assembly effectively attenuates noise across the desired frequency range. Our research demonstrates promising potential for significant noise reduction within practical constraints, contributing to the development of durable solutions for aircraft noise mitigation over a broad frequency spectrum.
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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) | 0.001 | 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 | 0.000 |
| 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 it