Staff Lead researchers Dr Felix Langfeldt BEng, MSc, PhD, FHEA Associate Professor Research interests Active/Passive Acoustic Metamaterials Low-frequency Sound Insulation Aircraft Cabin Noise Control Connect with Felix Email: F.Langfeldt@soton.ac.uk Research outputs Realizing non-Hermitian tunneling phenomena using non-reciprocal active acoustic metamaterials Felix Langfeldt, Joe Tan, Sayan Jana & Lea Sirota, 2025 DOI: 10.48550/arXiv.2507.17395 Type: other