Patent · US Active

Methods, apparatus and systems for decompressing a higher order ambisonics (HOA) signal

US10542364B2 · kind B2 · utility

4Cited by

1References

3Claims

0Family size

Assignee

Dolby Laboratories Licensing Corporation · US

Inventors

Sven Kordon · Wunstorf, DE
Alexander Krueger · Burgdorf, DE
Oliver Wuebbolt · Hannover, DE

Key dates

Filing date	Jun 3, 2019
Grant date	Jan 21, 2020
Priority date	—
Expiry date	Jun 3, 2039

Classification

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

Abstract

A method for compressing a HOA signal being an input HOA representation with input time frames (C(k)) of HOA coefficient sequences comprises spatial HOA encoding of the input time frames and subsequent perceptual encoding and source encoding. Each input time frame is decomposed (802) into a frame of predominant sound signals (XPS(k−1)) and a frame of an ambient HOA component ({tilde over (C)}AMB(k−1)). The ambient HOA component ({tilde over (C)}AMB(k−1)) comprises, in a layered mode, first HOA coefficient sequences of the input HOA representation (cn(k−1)) in lower positions and second HOA coefficient sequences (cAMB,n(k−1)) in remaining higher positions. The second HOA coefficient sequences are part of an HOA representation of a residual between the input HOA representation and the HOA representation of the predominant sound signals.

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