Signal generation for binaural signals

US9226089B2 · kind B2 · utility

Assignee

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

Inventors

• Harald Mundt · Fürth, DE
• Bernhard Neugebauer · Erlangen, DE
• Johannes Hilpert · Nuremberg, DE
• Andreas Silzle · Buckenhof, DE
• Jan Plogsties · Ergolding, DE

Key dates

• Filing date: Jan 27, 2011
• Grant date: Dec 29, 2015
• Expiry date: Jul 27, 2032

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04S2420/01
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

A device for generating a binaural signal based on a multi-channel signal representing a plurality of channels and intended for reproduction by a speaker configuration having a virtual sound source position associated to each channel, is described. It includes a correlation reducer for differently processing, and thereby reducing a correlation between, at least one of a left and a right channel of the plurality of channels, a front and a rear channel of the plurality of channels, and a center and a non-center channel of the plurality of channels, in order to obtain an inter-similarity reduced set of channels; a plurality of directional filters, a first mixer for mixing outputs of the directional filters modeling the acoustic transmission to the first ear canal of the listener, and a second mixer for mixing outputs of the directional filters modeling the acoustic transmission to the second ear canal of the listener. According to another aspect, a center level reduction for forming the downmix for a room processor is performed. According to even another aspect, an inter-similarity decreasing set of head-related transfer functions is formed.