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 Optimisation of a controllable Helmholtz resonator to achieve high frequency reconfigurability with large absorption values Yuan Kit Sim, Felix Langfeldt & Falk-Martin Hoffmann, 2025 DOI: 10.1121/2.0002154 Type: conference