Patent · US Active

Dynamic range control for a wide variety of playback environments

US11429341B2 · kind B2 · utility

2Cited by

30References

7Claims

0Family size

Assignee

Dolby International AB · IE

Inventors

Jeroen Koppens · Weert, NL
Jeffrey Riedmiller · Penngrove, US
Kristofer Kjoerling · Solna, SE
Alexander Stahlmann · Bubenreuth, DE
Holger Hoerich · Bad Mergentheim, DE
Alan J. Seefeldt · Alameda, US

Key dates

Filing date	Mar 22, 2021
Grant date	Aug 30, 2022
Priority date	—
Expiry date	Mar 22, 2041

Classification

Technology area (CPC H)Electricity
CPC primaryH04S2400/13
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

In an audio encoder, for audio content received in a source audio format, default gains are generated based on a default dynamic range compression (DRC) curve, and non-default gains are generated for a non-default gain profile. Based on the default gains and non-default gains, differential gains are generated. An audio signal comprising the audio content, the default DRC curve, and differential gains is generated. In an audio decoder, the default DRC curve and the differential gains are identified from the audio signal. Default gains are re-generated based on the default DRC curve. Based on the combination of the re-generated default gains and the differential gains, operations are performed on the audio content extracted from the audio signal.

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