Patent ID: 11929082
Assignee: DOLBY INTERNATIONAL AB
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 17:
18. A method in an encoder comprising the steps of:
receiving a set of dynamic audio objects that each comprise a respective time-varying spatial position indicated by first metadata;
downmixing the set of dynamic audio objects to one or more downmixed dynamic audio objects, wherein at least one of the one or more downmixed dynamic audio objects is intended to, in at least one of a plurality of decoding modes on a decoder side, be mapped to a set of static audio objects corresponding to channels of a predefined immersive audio configuration without fully decoding the at least one of the one or more dynamic audio objects into respective reconstructed individual dynamic audio objects that each comprise the respective time-varying spatial position, each of the static audio objects comprising a static spatial position indicated by second metadata;
determining a first set of downmix coefficients to be utilized for rendering the set of static audio objects corresponding to channels of the predefined immersive speaker configuration to a set of output audio channels at the decoder side; and
multiplexing the at least one downmixed dynamic audio object and the first set of downmix coefficients into an audio bitstream;
wherein a number of the one or more downmixed dynamic audio objects is determined based in part on a target bit rate of the audio stream.