Audio decoder, apparatus for generating encoded audio output data and methods permitting initializing a decoder

US11423919B2 · kind B2 · utility

Assignee

• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

• Daniel Fischer · Furth, DE
• Bernd Czelhan · Happurg, DE
• Max Neuendorf · Nuremberg, DE
• Nikolaus Rettelbach · Nuremberg, DE
• Ingo Hofmann · Nuremberg, DE
• Harald Fuchs · Eisenberg (Pfalz), DE
• Stefan Doehla · Erlangen, DE
• Nikolaus Faerber · Erlangen, DE

Key dates

• Filing date: Apr 6, 2020
• Grant date: Aug 23, 2022
• Expiry date: Aug 14, 2040

Classification

• Technology area (CPC G): Physics
• CPC primary: G10L19/24
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

An audio decoder decodes a bit stream of encoded audio data, which bit stream represents a sequence of audio sample values and includes a plurality of frames, wherein each frame includes associated encoded audio sample values. The audio decoder includes a determiner configured to determine whether a frame of the encoded audio data is a special frame including encoded audio sample values associated with the special frame and additional information, wherein the additional information include encoded audio sample values of a number of frames preceding the special frame, wherein the encoded audio sample values of the preceding frames are encoded using the same codec configuration as the special frame, wherein the number of preceding frames is sufficient to initialize the decoder to be in a position to decode the audio sample values associated with the special frame if the special frame is the first frame upon start-up of the decoder.