Apparatus and method for generating an output signal employing a decomposer

US9729991B2 · kind B2 · utility

Assignee

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

Inventors

• Andreas Walther · Könnern, DE
• Andreas Silzle · Buckenhof, DE
• Oliver Hellmuth · Erlangen, DE
• Bernhard Grill · Lautenbächle, DE
• Harald Popp · Tuchenbach, DE

Key dates

• Filing date: Nov 11, 2013
• Grant date: Aug 8, 2017
• Expiry date: Jan 17, 2034

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04S3/008
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

An apparatus for generating an output signal having at least two output channels from an input signal having at least two input channels, has an ambient/direct decomposer, an ambient modification unit and a combination unit. The ambient/direct decomposer is adapted to decompose at least two input channels of the input signal such that each one of the at least two input channels is decomposed into a signal of a first signal group and into a signal of a second signal group. The ambient modification unit is adapted to modify a signal of the ambient signal group or a signal derived from a signal of the ambient signal group to obtain a modified signal as a first output channel. The combination unit is adapted to combine a signal of the ambient signal group or a signal derived from a signal of the ambient signal group and a signal of the direct signal group or a signal derived from a signal of the direct signal group as a second output channel.