Apparatus for merging spatial audio streams

US8712059B2 · kind B2 · utility

Assignee

• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

• Giovanni Del Galdo · Martinroda, DE
• Fabian Kuech · Erlangen, DE
• Markus Kallinger · Erlangen, DE
• Ville Pulkki · Espoo, FI
• Mikko-Ville Laitinen · Helsinki, FI
• Richard Schultz-Amling · Nuremberg, DE

Key dates

• Filing date: Feb 11, 2011
• Grant date: Apr 29, 2014
• Expiry date: Jul 13, 2032

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04S2420/11
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

An apparatus for merging a first spatial audio stream with a second spatial audio stream to obtain a merged audio stream comprising an estimator for estimating a first wave representation comprising a first wave direction measure and a first wave field measure for the first spatial audio stream, the first spatial audio stream having a first audio representation and a first direction of arrival. The estimator being adapted for estimating a second wave representation comprising a second wave direction measure and a second wave field measure for the second spatial audio stream, the second spatial audio stream having a second audio representation and a second direction of arrival. The apparatus further comprising a processor for processing the first wave representation and the second wave representation to obtain a merged wave representation comprising a merged wave field measure and a merged direction of arrival measure, and for processing the first audio representation and the second audio representation to obtain a merged audio representation, and for providing the merged audio stream comprising the merged audio representation and the merged direction of arrival measure.