Apparatus and method for audio signal envelope encoding, processing, and decoding by modelling a cumulative sum representation employing distribution quantization and coding

US9953659B2 · kind B2 · utility

Assignee

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

Inventors

• Tom Baeckstroem · Nuremberg, DE
• Benjamin Schubert · Nuremberg, DE
• Markus Multrus · Nuremberg, DE
• Sascha Disch · Bad Mergentheim, DE
• Konstantin Schmidt · Nuremberg, DE
• Grzegorz Pietrzyk · Nuremberg, DE

Key dates

• Filing date: Dec 9, 2015
• Grant date: Apr 24, 2018
• Expiry date: Dec 9, 2035

Classification

• Technology area (CPC G): Physics
• CPC primary: G10L19/0204
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

An apparatus for generating an audio signal envelope from one or more coding values is provided. The apparatus includes an input interface for receiving the one or more coding values, and an envelope generator for generating the audio signal envelope depending on the one or more coding values. The envelope generator is configured to generate an aggregation function depending on the one or more coding values, wherein the aggregation function includes a plurality of aggregation points. Furthermore, the envelope generator is configured to generate the audio signal envelope such that the envelope value of each of the envelope points of the audio signal envelope depends on the aggregation value of at least one aggregation point of the aggregation function.