Method and apparatus for compressing and decompressing a Higher Order Ambisonics signal representation

Method and apparatus for compressing and decompressing a Higher Order Ambisonics signal representation

Abstract Higher Order Ambisonics (HOA) represents a complete sound field in the vicinity of a sweet spot, independent of loudspeaker set-up. The high spatial resolution requires a 5 high number of HOA coefficients. In the invention, there is provided a method and apparatus for decompressing a compre...

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Bibliographische Detailangaben
Hauptverfasser: KORDON, Sven, BOEHM, Johannes, KRUGER, Alexander, BATKE, Johann-Markus
Format: Patent
Sprache:eng
Schlagworte:
BROADCAST COMMUNICATION
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
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Beschreibung
Zusammenfassung:Abstract Higher Order Ambisonics (HOA) represents a complete sound field in the vicinity of a sweet spot, independent of loudspeaker set-up. The high spatial resolution requires a 5 high number of HOA coefficients. In the invention, there is provided a method and apparatus for decompressing a compressed HOA signal, the method comprises: receiving the compressed HOA signal; decoding the compressed HOA signal to determine a decoded directional HOA signal and a decoded 10 ambient HOA signal; performing order extension on the decoded ambient HOA signal to obtain an order extended representation of the decoded ambient HOA signal, wherein the order extension is performed by appending signals with zero-valued samples to the decoded ambient HOA signal; and 15 recomposing a decoded HOA representation from the order extended representation of the decoded ambient HOA signal and the decoded directional HOA signal.