Patent ID: 8712059

Claim:
An apparatus for merging a first spatial audio stream comprising a first audio representation having a measure for a pressure or a magnitude of a first audio signal and a first direction of arrival with a second spatial audio stream comprising a second audio representation having a measure for a pressure or a magnitude of a second audio signal and a second direction of arrival to acquire a merged audio stream, the apparatus for merging comprising an estimator for estimating a first wave representation, the first wave representation comprising a first wave direction measure being a directional quantity of a first wave and a first wave field measure being related to a magnitude of the first wave for the first spatial audio stream, and for estimating a second wave representation comprising a second wave direction measure being a directional quantity of a second wave and a second wave field measure being related to a magnitude of the second wave for the second spatial audio stream; and a processor for processing the first wave representation and the second wave representation to acquire a merged wave representation, the merged wave representation comprising a merged wave field measure, a merged direction of arrival measure and a merged diffuseness parameter, wherein the merged diffuseness parameter is based on the merged wave field measure, the first audio representation and the second audio representation, and wherein the merged wave field measure is based on the first wave field measure, the second wave field measure, the first wave direction measure, and the second wave direction measure, and wherein the processor is configured for processing the first audio representation and the second audio representation to acquire a merged audio representation, and for providing the merged audio stream comprising the merged audio representation, the merged direction of arrival measure and the merged diffuseness parameter.