Patent · US Active

Concept for combined dynamic range compression and guided clipping prevention for audio devices

US11170795B2 · kind B2 · utility

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0References

18Claims

0Family size

Assignee

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

Inventors

Fabian Kuech · Erlangen, DE
Christian Uhle · Nuremberg, DE
Michael Kratschmer · Erlangen, DE
Bernhard Neugebauer · Erlangen, DE
Michael Meier · Monrovia, US
Arne Borsum · Erlangen, DE

Key dates

Filing date	Apr 22, 2016
Grant date	Nov 9, 2021
Priority date	—
Expiry date	Apr 22, 2036

Classification

Technology area (CPC G)Physics
CPC primaryG10L19/008
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

The invention provides a concept for combined dynamic range compression and guided clipping prevention for audio devices. An audio decoder for decoding an audio bitstream and a metadata bitstream related to the audio bitstream according to the concept includes an audio processing chain including a plurality of adjustment stages including a dynamic range control stage for adjusting a dynamic range of the audio output signal and a guided clipping prevention stage for preventing clipping of the audio output signal; and a metadata decoder configured to receive the metadata bitstream and to extract dynamic range control gain sequences and guided clipping prevention gain sequences from the metadata bitstream, at least a part of the dynamic range control gain sequences being supplied to the dynamic range control stage, and at least a part of the guided clipping prevention gain sequences being supplied to the guided clipping prevention stage.

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