Stereo decoding system

US9374117B2 · kind B2 · utility

Assignee

• HARMAN BECKER AUTOMOTIVE SYSTEMS GMBH · DE

Inventors

• Stefan Gierl · Karlsruhe, DE
• Christoph Benz · Ohlsbach, DE
• Andreas Körner · Waldbronn, DE
• Karl-Anton Becker · Waldbronn, DE

Key dates

• Filing date: Jul 24, 2012
• Grant date: Jun 21, 2016
• Expiry date: Aug 22, 2033

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04B1/1676
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

A system for decoding a stereo multiplex signal, including one or more devices operable to convert the stereo multiplex signal into a sum signal (L+R) and a difference signal (L−R). The sum signal and the difference signal may be derived from a left stereo signal (L) and right stereo signal (R). The system may also be operable to determine a first transfer function HL(f) and a second transfer function (HR(f)) from the sum signal (L+R) and the difference signal (L−R). Further, the system may be operable to filter the sum signal (L+R) according to the first transfer function to provide the left stereo signal (L), and filter the sum signal (L+R) according to the second transfer function to provide the right stereo signal (R).