Patent · US Active

Apparatuses and methods for encoding and decoding a multichannel audio signal

US10916255B2 · kind B2 · utility

0Cited by

0References

23Claims

0Family size

Assignee

Huawei Technologies Duesseldorf GmbH · DE

Inventors

Panji Setiawan · Munich, DE
Milos Markovic · Velika Mostanica, RS

Key dates

Filing date	Dec 21, 2018
Grant date	Feb 9, 2021
Priority date	—
Expiry date	Jan 24, 2039

Classification

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

Abstract

An input audio signal comprises a plurality of input audio channels. A KLT-based pre-processor transforms the plurality of input audio channels into a plurality of eigenchannels and provides metadata associated with the plurality of eigenchannels. Each eigenchannel is associated with an eigenvalue and an eigenvector. The metadata allows reconstructing the plurality of input audio channels on the basis of the plurality of eigenchannels. A selector selects a subset of the plurality of eigenvectors corresponding to a plurality of selected eigenchannels on the basis of a geometric mean of the eigenvalues. An eigenchannel encoder encodes the plurality of selected eigenchannels. A metadata encoder encodes the metadata.

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