Spatial redundancy in Higher Order Ambisonics and its use for lowdelay lossless compression. - Erik Hellerud; Audun Solvang; U. Peter Svensson (ICASSP, 2009)

Achievable maximum-directivity beamforming for spherical microphone arrays with random array errors. - Haohai Sun; Shefeng Yan; U. Peter Svensson; Audun Solvang; Johan L. Nielsen (EUSIPCO, 2010)