An apparatus for determining a converted spatial audio signal

H - Electricity – 04 – S

Patent

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H04S 3/02 (2006.01) G10L 19/14 (2006.01)

Patent

CA 2733904

An apparatus (100) for determining a converted spatial audio signal, the converted spatial audio signal having an omnidirectional audio component (W') and at least one directional audio component, from an input spatial audio signal, the input spatial audio signal having an input audio representation (W) and an input direction of arrival (.slzero.). The apparatus (100) comprises an estimator (110) for estimating a wave representation (W) comprising a wave field measure and a wave direction of arrival measure based on the input audio representation (W) and the input direction of arrival (.slzero.). The apparatus (100) further comprises a processor (120) for processing the wave field measure and the wave direction of arrival measure to obtain the omnidirectional audio component (W) and the at least one directional component (X; Y; Z).

L'invention concerne un dispositif (100) pour déterminer un signal audio spatial converti, le signal audio spatial converti ayant une composante audio omnidirectionnelle (W') et au moins une composante audio directionnelle, à partir d'un signal audio spatial d'entrée, le signal audio spatial d'entrée ayant une représentation audio d'entrée (W) et une direction d'entrée d'arrivée (Ø). Le dispositif (100) comprend un estimateur (110) pour estimer une représentation d'onde (W) comprenant une mesure de champ d'ondes et une mesure de direction d'arrivée d'onde basées sur la représentation audio d'entrée (W) et la direction d'entrée d'arrivée (Ø). Le dispositif (100) comprend en outre un processeur (120) pour traiter la mesure de champ d'ondes et la mesure de direction d'arrivée d'onde pour obtenir la composante audio omnidirectionnelle (W) et ladite au moins une composante directionnelle (X; Y; Z).

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