Audio decoder, audio encoder, method for providing a decoded audio signal, method for providing an encoded audio signal, audio stream, audio stream provider and computer program using a stream identifier

Patent metadata

Field	Value
Publication number	US-2024395275-A1
Application number	US-202418796149-A
Country	US
Kind code	A1
Filing date	Aug 6, 2024
Priority date	Jan 10, 2017
Publication date	Nov 28, 2024
Grant date	—

Abstract

An audio decoder for providing a decoded audio signal representation on the basis of an encoded audio signal representation is configured to adjust decoding parameters in dependence on a configuration information, to decode one or more audio frames using a current configuration information, to compare a configuration information in a configuration structure associated with one or more frames to be decoded by the current configuration information, and to make a transition to perform decoding using the configuration information in the configuration structure associated with the one or more frames to be decoded as a new configuration information if the configuration information in the configuration structure associated with the one or more frames to be decoded, or a relevant portion thereof, is different from the current configuration information, and to consider a stream identifier information included in the configuration structure when comparing the configuration information.

First claim

What is claimed is:

1 . An audio decoder for providing a decoded audio signal representation on the basis of an encoded audio signal representation,
wherein the audio decoder is configured to adjust decoding parameters in dependence on a configuration information, wherein the audio decoder is configured to decode one or more audio frames using a current configuration information, and wherein the audio decoder is configured to compare a configuration information in a configuration structure associated with one or more frames to be decoded, with the current configuration information, and to make a transition to perform a decoding using the configuration information in the configuration structure associated with the one or more frames to be decoded as a new configuration information if the configuration information in the configuration structure associated with the one or more frames to be decoded, or a relevant portion of the configuration information in the configuration structure associated with the one or more frames to be decoded, is different from the current configuration information; wherein the audio decoder is configured to consider a stream identifier information included in the configuration structure when comparing the configuration information, such that a difference between a stream identifier previously acquired by the audio decoder and a stream identifier represented by the stream identifier information in the configuration structure associated with the one or more frames to be decoded causes to make the transition; wherein the configuration information comprises an information about a channel configuration.

2 . A method for providing a decoded audio signal representation on the basis of an encoded audio signal representation,
wherein the method comprises adjusting decoding parameters in dependence on a configuration information, wherein the method comprises decoding one or more audio frames using a current configuration information, and wherein the method comprises comparing a configuration information in a configuration structure associated with one or more frames to be decoded, with the current configuration information, and wherein the method comprises making a transition to perform a decoding using the configuration information in the configuration structure associated with the one or more frames to be decoded as a new configuration information if the configuration information in the configuration structure associated with the one or more frames to be decoded, or a relevant portion of the configuration information in the configuration structure associated with the one or more frames to be decoded, is different from the current configuration information; wherein the method comprises considering a stream identifier information included in the configuration structure when comparing the configuration information, such that a difference between a stream identifier previously acquired in the audio decoding and a stream identifier represented by the stream identifier information in the configuration structure associated with the one or more frames to be decoded causes to make the transition; wherein the configuration information comprises an information about a channel configuration.

3 . A computer program for performing the method according to claim 2 when the computer program runs on a computer.

4 . An audio decoder for providing a decoded audio signal representation on the basis of an encoded audio signal representation,
wherein the audio decoder is configured to adjust decoding parameters in dependence on a configuration information, wherein the audio decoder is configured to decode one or more audio frames using a current configuration information, and wherein the audio decoder is configured to compare a configuration information in a configuration structure associated with one or more frames to be decoded, with the current configuration information, and to make a transition to perform a decoding using the configuration information in the configuration structure associated with the one or more frames to be decoded as a new configuration information if the configuration information in the configuration structure associated with the one or more frames to be decoded, or a relevant portion of the configuration information in the configuration structure associated with the one or more frames to be decoded, is different from the current configuration information; wherein the audio decoder is configured to consider a stream identifier information included in the configuration structure when comparing the configuration information, such that a difference between a stream identifier previously acquired by the audio decoder and a stream identifier represented by the stream identifier information in the configuration structure associated with the one or more frames to be decoded causes to make the transition; wherein the encoded audio signal representation is an audio stream comprising a sequence of unified-speech-and-audio-coding frames.

5 . A method for providing a decoded audio signal representation on the basis of an encoded audio signal representation,
wherein the method comprises adjusting decoding parameters in dependence on a configuration information, wherein the method comprises decoding one or more audio frames using a current configuration information, and wherein the method comprises comparing a configuration information in a configuration structure associated with one or more frames to be decoded, with the current configuration information, and wherein the method comprises making a transition to perform a decoding using the configuration information in the configuration structure associated with the one or more frames to be decoded as a new configuration information if the configuration information in the configuration structure associated with the one or more frames to be decoded, or a relevant portion of the configuration information in the configuration structure associated with the one or more frames to be decoded, is different from the current configuration information; wherein the method comprises considering a stream identifier information included in the configuration structure when comparing the configuration information, such that a difference between a stream identifier previously acquired in the audio decoding and a stream identifier represented by the stream identifier information in the configuration structure associated with the one or more frames to be decoded causes to make the transition; wherein the encoded audio signal representation is an audio stream comprising a sequence of unified-speech-and-audio-coding frames.

6 . A computer program for performing the method according to claim 5 when the computer program runs on a computer.

Assignees

• Fraunhofer Ges Forschung

Inventors

• Neuendorf Max
• Felix Matthias
• Hildenbrand Matthias
• Schuster Lukas
• Hofmann Ingo
• Herrmann Bernd
• Rettelbach Nikolaus

Classifications

• G10L19/167 Primary

  Audio streaming, i.e. formatting and decoding of an encoded audio signal representation into a data stream for transmission or storage purposes · CPC title

• G10L19/22 Primary

  Mode decision, i.e. based on audio signal content versus external parameters · CPC title

• G10L19/173

  Transcoding, i.e. converting between two coded representations avoiding cascaded coding-decoding · CPC title

• G10L19/008

  Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing · CPC title

• G10L19/0017 Primary

  Lossless audio signal coding; Perfect reconstruction of coded audio signal by transmission of coding error (G10L19/24 takes precedence) · CPC title