METHOD AND SIGNAL PROCESSING UNIT FOR MAPPING A PLURALITY OF INPUT CHANNELS OF AN INPUT CHANNEL CONFIGURATION TO OUTPUT CHANNELS OF AN OUTPUT CHANNEL CONFIGURATION

摘要

A method for mapping a plurality of input channels of an input channel configuration to output channels of an output channel configuration includes providing a set of rules associated with each input channel of the plurality of input channels, wherein the rules define different mappings between the associated input channel and a set of output channels. For each input channel of the plurality of input channels, a rule associated with the input channel is accessed, determination is made whether the set of output channels defined in the accessed rule is present in the output channel configuration, and the accessed rule is selected if the set of output channels defined in the accessed rule is present in the output channel configuration. The input channels are mapped to the output channels according to the selected rule.

主权项

1. A method for mapping a plurality of input channels of an input channel configuration to output channels of an output channel configuration, the method comprising:
providing a set of rules associated with each input channel of the plurality of input channels, wherein the rules define different mappings between the associated input channel and a set of output channels; for each input channel of the plurality of input channels, accessing a rule associated with the input channel, determining whether the set of output channels defined in the accessed rule is present in the output channel configuration, and selecting the accessed rule if the set of output channels defined in the accessed rule is present in the output channel configuration; and mapping the input channels to the output channels according to the selected rule, wherein the rules in the sets of rules are prioritized, wherein higher prioritized rules are selected with higher preference over lower prioritized rules, and comprising at least one of: wherein a rule defining mapping of the input channel to one or more output channels comprising a lower direction deviation from the input channel in a horizontal listener plane is higher prioritized than a rule defining mapping of the input channel to one or more output channels comprising a higher direction deviation from the input channel in the horizontal listener plane, wherein a rule defining mapping an input channel to one or more output channels comprising a same elevation angle as the input channel is higher prioritized than a rule defining mapping of the input channel to one or more output channels comprising an elevation angle different from the elevation angle of the input channel, wherein, in the sets of rules, the highest prioritized rule defines direct mapping between the input channel and an output channel, which comprise the same direction, and wherein one rule of a set of rules associated with an input channel comprising an elevation angle of 90° defines mapping the input channel to all available output channels comprising a first elevation angle lower than the elevation angle of the input channel, and another less prioritized rule of that set of rules defines mapping the input channel to all available output channels comprising a second elevation angle lower than the first elevation angle.