MULTICHANNEL ENCODER AND DECODER WITH EFFICIENT TRANSMISSION OF POSITION INFORMATION

摘要

A receiver (603) receives a position given by a first value representing a first position parameter and a second value representing a second position parameter. A match circuit (605) determines if the second value matches a nominal value. If so, an output circuit (609) generates output data including data representing the first value in a field of the output data but not including data representing the second value in the output data. Otherwise, the output circuit (609) includes data in the field which represents an invalid position value for the first position parameter. A receiver determines if data of a data field represents a valid position value for the first position parameter. If so, it determines a position with the first value being the valid position value and the second value being a nominal value for the second position parameter. Otherwise it determines the second value from a second field of the input data.

主权项

1. An audio encoder arranged to communicate a position, the audio encoder comprising:
a receiver for receiving a position, the position having at least a first value and a second value, the first value representing a first position parameter and the second value representing a second position parameter; a match circuit for determining if the second value matches a nominal value for the second position parameter; an output circuit for generating output data, the output circuit being arranged to:
when the second value matches the nominal value, including first data representing the first value in a first field of the output data but not including data representing the second value in the output data; andwhen the second value does not match the nominal value, including second data in the first field, the second data representing an invalid position value for the first position parameter.