Patent · US Active

Method and device for metadata for multi-channel or sound-field audio signals

US10381013B2 · kind B2 · utility

3Cited by

3References

15Claims

0Family size

Assignee

Dolby Laboratories Licensing Corporation · US

Inventors

Oliver Wuebbolt · Hannover, DE
Johannes Boehm · Göttingen, DE
Peter Jax · Hannover, DE

Key dates

Filing date	Apr 30, 2018
Grant date	Aug 13, 2019
Priority date	—
Expiry date	Apr 30, 2038

Classification

Technology area (CPC H)Electricity
CPC primaryH04S2420/11
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

Conventional audio compression technologies perform a standardized signal transformation, independent of the type of the content. Multi-channel signals are decomposed into their signal components, subsequently quantized and encoded. This is disadvantageous due to lack of knowledge on the characteristics of scene composition, especially for e.g. multi-channel audio or Higher-Order Ambisonics (HOA) content. An improved method for encoding pre-processed audio data comprises encoding the pre-processed audio data, and encoding auxiliary data that indicate the particular audio pre-processing. An improved method for decoding encoded audio data comprises determining that the encoded audio data had been pre-processed before encoding, decoding the audio data, extracting from received data information about the pre-processing, and post-processing the decoded audio data according to the extracted pre-processing information.

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