Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Matthias Hildenbrand

Max Neuendorf

Ralf Geiger

Markus Schnell

Manuel Jander

Markus Lohwasser

Tobias Chalupka

Nikolaus Rettelbach

Ingo Hofmann

Matthias Felix

Lukas Schuster

Bernd Herrmann

Marc Gayer

Daniel Fischer

Andreas Niedermeier

Stephan Wilde

Markus Multrus

Guillaume Fuchs

Patrick Warmbold

Vignesh Subbaraman

Oliver Weiss

Arthur Tritthart

Oliver Weiß

An apparatus for audio decoding according to an embodiment is provided. The apparatus comprises a decoding module for decoding a received encoded audio signal to obtain a decoded audio signal having a first bandwidth. Moreover, the apparatus comprises a first spectral band replication module for conducting spectral band replication according to a first spectral band replication mode to obtain a spectral band replicated audio signal. Furthermore, the apparatus comprises a second spectral band replication module for conducting spectral band replication according to a second spectral band replication mode to obtain the spectral band replicated audio signal, wherein the second spectral band replication mode is different from the first spectral band replication mode.

Apparatus and method for audio decoding supporting two spectral band replication modes

An apparatus for processing an audio signal includes a configurable first audio signal processor for processing the audio signal in accordance with different configuration settings to obtain a processed audio signal, wherein the apparatus is adapted so that different configuration settings result in different sampling rates of the processed audio signal. The apparatus furthermore includes n analysis filter bank having a first number of analysis filter bank channels, a synthesis filter bank having a second number of synthesis filter bank channels, a second audio processor being adapted to receive and process an audio signal having a predetermined sampling rate, and a controller for controlling the first number of analysis filter bank channels or the second number of synthesis filter bank channels in accordance with a configuration setting.

Resampling output signals of QMF based audio codecs

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.

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

Resampling output signals of QMF based audio codec

An apparatus for decoding an encoded audio signal including bandwidth extension control data indicating either a first harmonic bandwidth extension mode or a second non-harmonic bandwidth extension mode, includes: an input interface for receiving the encoded audio signal including the bandwidth extension control data indicating either the first harmonic bandwidth extension mode or the second non-harmonic bandwidth extension mode; a processor for decoding the audio signal using the second non-harmonic bandwidth extension mode; and a controller for controlling the processor to decode the audio signal using the second non-harmonic bandwidth extension mode, even when the bandwidth extension control data indicates the first harmonic bandwidth extension mode for the encoded signal.

Apparatus and method for decoding an encoded audio signal with low computational resources

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Erlangen, Germany

Matthias Hildenbrand