Sound Transmission Performance of a Ventilated Acoustic Metastructure Composed of Helmholtz Resonator and Thin Membrane
Why this work is in the frame
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Bibliographic record
Abstract
Traditional soundproofing materials face limitations in meeting modern noise reduction demands, particularly in balancing acoustic performance with ventilation requirements. To address this challenge, we propose a novel acoustic metamaterial composed of a Helmholtz resonance cavity coupled with a thin-membrane structure. This hybrid design achieves simultaneous sound insulation, noise reduction, and effective airflow circulation. Numerical results demonstrate that the composite structure exhibits significant low-frequency sound attenuation, with over 10dB of sound transmission loss in low-frequency range of 70~230Hz. Remarkably, the system maintains a peak sound transmission loss of up to 65dB while preserving ventilation functionality. This work also investigates the influence of key geometrical parameters on sound transmission performance of the metastructure. This work provides a promising solution for applications requiring both acoustic control and air circulation in low-frequency range.
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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 | 0.000 | 0.000 |
| 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 it