Apparatus and method for processing an audio signal using patch border alignment

US9305557B2 · kind B2 · utility

Assignees

• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE
• Dolby International AB · IE

Inventors

• Frederik Nagel · Nuremberg, DE
• Sascha Disch · Bad Mergentheim, DE
• Stephan Wilde · Wendelstein, DE
• Lars Villemoes · Stockholm, SE
• Per Ekstrand · Saltsjöbaden, SE

Key dates

• Filing date: Sep 5, 2012
• Grant date: Apr 5, 2016
• Expiry date: Sep 27, 2034

Classification

• Technology area (CPC G): Physics
• CPC primary: G10L21/04
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

Apparatus for processing an audio signal to generate a bandwidth extended signal having a high frequency part and a low frequency part using parametric data for the high frequency part, the parametric data relating to frequency bands of the high frequency part includes a patch border calculator for calculating a patch border such that the patch border coincides with a frequency band border of the frequency bands. The apparatus further includes a patcher for generating a patched signal using the audio signal and the patch border.