Patent ID: 11882323
Assignee: FRAUNHOFER GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 6:
7. A method for audio decoding, comprising:
receiving a spliced audio data stream, comprising:
a sequence of payload packets, each of the payload packets belonging to a respective one of a sequence of access units into which the spliced audio data stream is partitioned, each access unit being associated with a respective one of audio frames;
a truncation unit packet inserted into the spliced audio data stream and indicating an end portion of an audio frame with which a predetermined access unit is associated, as to be discarded in playout, wherein
in a first subsequence of payload packets of the sequence of payload packets, each payload packet belongs to an access unit of a first audio data stream having encoded thereinto a first audio signal in units of audio frames of the first audio signal, and the access units of the first audio data stream comprising the predetermined access unit, and in a second subsequence of payload packets of the sequence of payload packets, each payload packet belongs to access units of a second audio data stream having encoded thereinto a second audio signal in units of audio frames of the second audio data stream,
the first and the second subsequences of payload packets are immediately consecutive with respect to each other and abut each other at the predetermined access unit and the end portion is a trailing end portion in case of the first subsequence preceding the second subsequence and a leading end portion in case of the second subsequence preceding the first subsequence,

a further predetermined access unit which has encoded thereinto the further audio frame in a manner so that the reconstruction thereof is independent from the access unit immediately preceding further predetermined access unit, thereby allowing immediate playout, respectively,
a further truncation unit packet inserted into the spliced audio data stream and indicating a leading end portion of a further audio frame with which a further predetermined access unit is associated, as to be discarded in playout, wherein in a third subsequence of payload packets of the sequence of payload packets, each payload packet belongs to access units of a third audio data stream having encoded therein a third audio signal, or to access units of the first audio data stream, following the access units of the first audio data stream to which the payload packets of the first subsequence belong, wherein the access units of the third audio data stream comprise the further predetermined access unit,
reconstructing, from the further predetermined access unit, the further audio frame independent from the access unit immediately preceding further predetermined access unit, and
discarding in playout the end portion of the audio frame with which the predetermined access unit is associated.