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This is the accepted version of the original article published by IEEE. ABSTRACT A method for computing and sharpening angular spectra, derived from low-order ambisonic signals, is presented in this paper, which is intended for high-resolution directional sound-field visualisation. The method relies on a re-assignment principle, whereby the directional energy for each grid point is assigned to a new direction, which corresponds to a direction-of-arrival (DoA) estimate within adoi:10.1109/icassp.2019.8683621 dblp:conf/icassp/McCormackPP19 fatcat:zdrdjmiwpzdunkpiu6vdu2jzxu