A 0.67-mm2 45-μW DSP VLSI implementation of an adaptive directional microphone for hearing aids. - Flavio Carbognani; Felix Bürgin; Luca Henzen; Herbert Koch; Hovig Magdassian; Christoph Pedretti; Hubert Kaeslin; Norbert Felber; Wolfgang Fichtner (ECCTD, 2005)