20240029744. AUDIO ENCODER, AUDIO DECODER, METHODS AND COMPUTER PROGRAM USING JOINTLY ENCODED RESIDUAL SIGNALS simplified abstract (Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.)

AUDIO ENCODER, AUDIO DECODER, METHODS AND COMPUTER PROGRAM USING JOINTLY ENCODED RESIDUAL SIGNALS

Organization Name

Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.

Inventor(s)

Sascha Dick of Nuernberg (DE)

Christian Ertel of Eckental (DE)

Christian Helmrich of Erlangen (DE)

Johannes Hilpert of Nuernberg (DE)

Andreas Hoelzer of Erlangen (DE)

Achim Kuntz of Hemhofen (DE)

AUDIO ENCODER, AUDIO DECODER, METHODS AND COMPUTER PROGRAM USING JOINTLY ENCODED RESIDUAL SIGNALS - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240029744 titled 'AUDIO ENCODER, AUDIO DECODER, METHODS AND COMPUTER PROGRAM USING JOINTLY ENCODED RESIDUAL SIGNALS

Simplified Explanation

The abstract describes an audio decoder that can provide at least four audio channel signals based on an encoded representation. It utilizes a multi-channel decoding technique to generate a first residual signal and a second residual signal from a jointly encoded representation of the first and second residual signals. The decoder then uses a residual-signal-assisted multi-channel decoding method to combine the first downmix signal with the first residual signal to produce a first audio channel signal, and the second downmix signal with the second residual signal to produce a second audio channel signal. Similarly, it generates a third and fourth audio channel signal using the second downmix signal and the second residual signal.

• The audio decoder provides four audio channel signals based on an encoded representation.
• It uses multi-channel decoding to generate residual signals from a jointly encoded representation.
• The decoder employs residual-signal-assisted multi-channel decoding to combine downmix signals with the residual signals to produce audio channel signals.

Potential applications of this technology:

• Surround sound systems in home theaters and cinemas.
• Virtual reality and augmented reality audio experiences.
• Gaming consoles and immersive gaming experiences.
• Audio production and post-production for film and music.

Problems solved by this technology:

• Efficient decoding and reproduction of multi-channel audio signals.
• Enhanced spatial audio experience for the listeners.
• Improved audio quality and immersion in various applications.

Benefits of this technology:

• Provides a more immersive and realistic audio experience.
• Enables accurate localization of sound sources.
• Enhances the overall audio quality and fidelity.
• Supports the creation of multi-channel audio content with reduced bandwidth requirements.

Original Abstract Submitted

an audio decoder for providing at least four audio channel signals on the basis of an encoded representation is configured to provide a first residual signal and a second residual signal on the basis of a jointly encoded representation of the first residual signal and of the second residual signal using a multi-channel decoding. the audio decoder is configured to provide a first audio channel signal and a second audio channel signal on the basis of a first downmix signal and the first residual signal using a residual-signal-assisted multi-channel decoding. the audio decoder is configured to provide a third audio channel signal and a fourth audio channel signal on the basis of a second downmix signal and the second residual signal using a residual-signal-assisted multi-channel decoding. an audio encoder is based on corresponding considerations.