Binary classification of spoken words with passive elastic metastructures

Tena Dubček,1 Daniel Moreno-Garcia,2 Thomas Haag,3 Henrik R. Thomsen,3 Theodor S. Becker,3 Christoph Bärlocher,3 Fredrik Andersson,3 Sebastian D. Huber,1 Dirk-Jan van Manen,3 Luis Guillermo Villanueva,2 Johan O.A. Robertsson,3 and Marc Serra-Garcia3, 4 Institute for Theoretical Physics, ETH Zürich, 8093 Zürich, Switzerland School of Engineering, EPFL, 1015 Lausanne, Switzerland Institute for Geophysics, ETH Zürich, 8092 Zürich, Switzerland AMOLF, Science Park 104, 1098 XG Amsterdam, the Netherlands (Dated: November 17, 2021)