Methods and systems for interactive rendering of object based audio
Methods for generating an object based audio program which is renderable in a personalizable manner, e.g., to provide an immersive, perception of audio content of the program. Other embodiments include steps of delivering (e.g., broadcasting), decoding, and/or rendering such a program. Rendering of audio objects indicated by the program may provide an immersive experience. The audio content of the program may be indicative of multiple object channels (e.g., object channels indicative of user-selectable and user-configurable objects, and typically also a default set of objects which will be rendered in the absence of a selection by a user) and a bed of speaker channels. Another aspect is an audio processing unit (e.g., encoder or decoder) configured to perform, or which includes a buffer memory which stores at least one frame (or other segment) of an object based audio program (or bitstream thereof) generated in accordance with, any embodiment of the method.
1. A method for generating an object based audio program, said method comprising:
determining at least one bed of speaker channels indicative of audio content;
determining a set of object channels indicative of audio content;
generating object related metadata indicative of the object channels; and
generating the object based audio program, such that said object based audio program includes each said bed of speaker channels, the object channels, and the object related metadata, and is renderable based on the bed of speaker channels, the object channels and the object related metadata.
2. A method of rendering audio content determined by an object based audio program, wherein the program includes at least one bed of speaker channels, a set of object channels, and object related metadata, said method comprising:
(a) determining a selected subset of the set of object channels; and
(b) rendering audio content determined by the object based audio program based on the object related metadata, and determining a mix of first audio content based on the bed of speaker channels and the selected subset of the set of object channels.
3. A system for rendering audio content determined by an object based audio program, wherein the program includes at least one bed of speaker channels, a set of object channels, and object related metadata, said system comprising:
a first subsystem coupled to receive the object based audio program and configured to parse the speaker channels, the object channels, and the object related metadata, and to determine a selected subset of the object channels; and
a rendering subsystem, coupled to the first subsystem and configured to render audio content determined by the object based audio program, including by determining a mix of first audio content indicated by one said bed of speaker channels and second audio content indicated by the selected subset of the object channels.