Method of transmitting or storing digitalized, multi-channel audio signals

US5682461A · kind A · utility

Assignee

• Institut Fur Rundfunktechnik GMBH · DE

Inventors

• Andreas Silzle · Buckenhof, DE
• Gerhard Stoll · Winnenden, DE
• Guenther Theile · Thanning, DE
• Martin Link · Merdingen, DE

Key dates

• Filing date: Nov 21, 1994
• Grant date: Oct 28, 1997
• Expiry date: Nov 21, 2014

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04B1/665
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

In order to transmit or to store digitalized, multi-channel audio signals which are digitally represented by a plurality of spectral subband signals, at an encoder, subband signals of different audio channels but having the same frequency position are combined across channels according to a dynamic control signal. This control signal is derived from several audio channels by an audio signal analysis based on a psycho-acoustic binaural model. At a decoder, the subband signals of several audio channels but having the same frequency position are dissociated across channels according to a control value derived from the dynamic control signal, transmitted or stored therewith.