Patent ID: 11948587
Assignee: DOLBY INTERNATIONAL AB
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 2:
3. An apparatus for decoding a compressed Higher Order Ambisonics (HOA) sound representation of a sound or sound field that is encoded in a plurality of hierarchical layers using layered encoding, the apparatus comprising:
a receiver for receiving a bit stream containing the compressed HOA representation corresponding to the plurality of hierarchical layers that include a base layer and at least an enhancement layer, wherein the plurality of hierarchical layers includes components of a basic compressed sound representation of the sound or sound field, the components corresponding to a plurality of monaural signals,
a processor for determining that a parameter CodedVVecLength equals 1 and that at least some components of a vector corresponding to the compressed HOA representation are implicitly set to zero; and
a decoder for decoding the compressed HOA representation based on basic side information that is associated with the base layer and based on enhancement side information that is associated with the enhancement layer, wherein the basic side information indicates that at least an individual monaural signal represents a directional signal with a direction of incidence, and wherein the enhancement side information includes information that allows prediction of missing portions of the sound or sound field.