Patent ID: 11877141
Assignee: FRAUNHOFER GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 27:
28. A method for mapping a plurality of input audio loudspeaker channels of an input audio loudspeaker channel configuration to output audio loudspeaker channels of an output audio loudspeaker channel configuration, the input audio loudspeaker channel configuration defining the input audio loudspeaker channels present in an input reproduction setup and the output audio loudspeaker channel configuration defining the output audio loudspeaker channels present in an output reproduction setup, the method comprising:
providing a table comprising entries, wherein each entry of the table defines a rule associated with an input audio loudspeaker channel and defining a different mapping between the associated input audio loudspeaker channel and a set of output audio loudspeaker channels, wherein the rules in the table are associated with input audio loudspeaker channels of a plurality of different input audio loudspeaker channel configurations,
obtaining selected rules by performing operations a) and b) for each of the plurality of input audio loudspeaker channels of the input audio loudspeaker channels:
a) accessing a set of rules associated with this input audio loudspeaker channel comprising
a1) accessing rules of the table associated with this input audio loudspeaker channel, or
a2) accessing a first rule not included in the table and defining a direct mapping between the input audio loudspeaker channel and an output audio loudspeaker channel having the same direction, and, if the output audio loudspeaker channel in the first rule is not available in the output audio loudspeaker configuration, accessing rules of the table associated with this input audio loudspeaker channel,
wherein accessing comprises determining for each accessed rule whether the set of output audio loudspeaker channels defined in the accessed rule is available in the output audio loudspeaker channel configuration, and
b) selecting a rule of the set of rules associated with this input audio loudspeaker channel, in which the set of output audio loudspeaker channels is present in the output audio loudspeaker channel configuration; and
mapping the input audio loudspeaker channels to the output audio loudspeaker channels according to the selected rules.