apparatus and methods for generating a number of audio output channels and a data stream, data stream, storage medium, receiver for generating a number of audio output channels, transmitter for generating a data stream, transmission system , methods of receiving and transmitting a data stream, computer program product, and audio playback and audio recording devices

摘要

APPARATUS AND METHODS FOR GENERATING A NUMBER OF OUTPUT AUDIO CHANNELS AND A DATA FLOW, DATA FLOW, STORAGE MEDIA, RECEIVER TO GENERATE A NUMBER OF AUDIO CHANNELS OUTPUT, TRANSMITTER TO GENERATE DATA FLOW SYSTEM , METHODS OF RECEIVING AND TRANSMITTING A DATA FLOW, COMPUTER PROGRAM PRODUCT, AND AUDIO PLAYBACK AND AUDIO RECORDING DEVICES. An audio encoder 109 has a hierarchical coding structure and generates a data stream on one or more audio channels as well as all parametric audio coding channels. Encoder 109 comprises an encoding frame processor 305 which inserts decoder tree frame data into the data stream. The decoder tree structure data in the data stream. The decoder tree structure data comprises at least one data value indicative of a channel split characteristic to a data value indicative of a channel split characteristic for an audio channel in a hierarchical layer of the hierarchical structure. and you can specifically specify decoder tree structures to be applied through a decoder. A decoder (115) comprises in response to the decoder tree structure data. A decoder processor 403 then generates output audio channels from the data stream using the hierarchical decoder structure.