Transmission loss of a labyrinthine acoustic metamaterial augmented with multichannel feedforward active noise control
Year: 2025
Type: article
Abstract: Acoustic metamaterials and active noise control are two advanced noise control treatments that can typically offer performance that exceeds that of conventional passive noise control treatments. Acoustic metamaterials utilize sub-wavelength structures to realize sound field control, whilst active noise control treatments achieve control via the introduction of additional sources driven to generate a secondary sound field that interferes in a controlled way with the original, primary sound field. This paper presents an investigation into combining these two noise control techniques, to achieve enhanced noise control over a spatial region using a hybrid device. In particular, conventional feedforward active noise control is combined with a labyrinthine metasurface and the increase in performance offered by the hybrid solution is demonstrated.
Source: Physical Review Applied
DOI: 10.1103/crg1-lp6y
Language: English
Subfield: Biomedical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4415332482