Patent ID: 11894005
Assignee: DOLBY INTERNATIONAL AB
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 8:
9. A system comprising:
one or more processors; and
a non-transitory computer-readable medium storing instructions that, upon execution by the one or more processors, cause the one or more processors to perform operations comprising:
receiving a plurality of incoming bitstreams, each of the incoming bitstreams including spectral components representing spectral content of an audio signal and metadata indicative of audio activity in the incoming bitstreams, each of the incoming bitstreams being conformal to a predefined bitstream format allowing transmission of spectral components up to a maximum frequency, wherein the spectral components in each incoming bitstream relate to a frequency range extending up to a selectable input break frequency that is selectable by one or more communication endpoints;
generating, based on the incoming bitstreams, a particular bitstream representing an audio signal being an additive mix of at least one of the incoming bitstreams;
selecting an outgoing bitstream from the particular bitstream or a bitstream reproducing an active one of the incoming bitstreams; and
monitoring the incoming bitstreams for audio activity according to the metadata in the incoming bitstreams, wherein the monitoring includes:
in response to having exactly one active incoming bitstream, outputting a particular outgoing bitstream reproducing the active incoming bitstream, and
in response to having more than one active incoming bitstream, outputting the audio signal being the additive mix of the at least one of the incoming bitstreams,

wherein the metadata indicative of audio activity in the incoming bitstreams is determined by a device other than the system.