Patent · US Active

Error concealment strategy in a decoding system

US9460723B2 · kind B2 · utility

13Cited by

2References

8Claims

0Family size

Assignee

Dolby International AB · IE

Inventors

Tobias Friedrich · Wimsheim, DE
Tobias R. Wagenblass · Nuremberg, DE
Karsten Linzmeier · Nuremberg, DE
Daniel Homm · Nuremberg, DE
Claus Spenger · Nuremberg, DE
Heiko Purnhagen · Sundbyberg, SE

Key dates

Filing date	Jun 14, 2013
Grant date	Oct 4, 2016
Priority date	—
Expiry date	Sep 17, 2033

Classification

Technology area (CPC H)Electricity
CPC primaryH04S3/008
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A decoding system reconstructs an audio signal based on an input signal representing the audio signal by parametric coding or by n discretely coded channels. Parametric decoding proceeds on the basis of a core signal and mixing parameters controlling a spatial synthesis stage, which is supplied with a downmix signal. A controller is responsible for controlling the components of the decoding system, whether in steady-state parametric mode, steady-state discrete decoding mode and transitions between these. In defective frames of the input signal, which do not allow the mixing parameters to be decoded, the controller is configured to perform various error handling procedures including: parametric decoding using previous values of the mixing parameters; continuing parametric decoding for a limited duration, and/or outputting the core signal without spatial synthesis.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.