Patent ID: 11972769
Assignee: DOLBY INTERNATIONAL AB
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 7:
8. A method of generating, by an audio encoder, a bitstream of encoded audio data with immediate playout frames, wherein the bitstream of encoded audio data represents a sequence of audio sample values and comprises a plurality of frames, wherein each frame comprises associated encoded audio sample values, the method comprising the steps of:
encoding, by a core encoder, uncompressed audio sample values associated with the plurality of frames using a predefined codec configuration;
storing, by a buffer, encoded audio sample values of a number of preceding frames of a current frame of the plurality of frames encoded using the predefined codec configuration; and
writing, by an embedder, an immediate playout frame in the current frame of the plurality of frames, wherein the immediate playout frame comprises encoded audio sample values associated with said current frame and additional information corresponding to the encoded audio sample values of the number of preceding frames of said current frame, wherein the generated bitstream of encoded audio data is an MPEG-4 Audio bitstream, wherein the additional information is embedded in the bitstream, by the embedder, via an MPEG-4 Audio bitstream extension mechanism that is an extension_payload element of a new extension payload element type EXT_AUDIO_PRE_ROLL, wherein the extension_payload element is located, by the embedder, at a first position in the MPEG-4 Audio bitstream, and wherein the extension_payload element is embedded, by the embedder, inside a fill element (ID_FIL).