Patent ID: 11895477
Assignee: DOLBY LABORATORIES LICENSING CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 0:
1. A method for decompressing a compressed Higher Order Ambisonics (HOA) representation, the method comprising:
decoding the compressed HOA representation to provide a decoded frame of signals and an assignment vector indicating first indices of possibly contained coefficient sequence of ambient HOA components; wherein the assignment vector indicates first indices of possibly contained coefficient sequence of ambient HOA components relating to non-zero ambient HOA components;
determining a first set of indices indicating active directional signals of the decoded frame of signals, and respective directions of the active directional signals;
re-distributing the decoded frame of signals based on the first set of indices and the respective directions, wherein the re-distribution determines a frame of HOA directional signals and a frame of ambient HOA components;
outputting the frame of HOA directional signals; and
outputting the frame of ambient HOA components.