Patent · US Active

Method for compressing a higher order ambisonics (HOA) signal, method for decompressing a compressed HOA signal, apparatus for compressing a HOA signal, and apparatus for decompressing a compressed HOA signal

US9930464B2 · kind B2 · utility

11Cited by

0References

19Claims

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	Mar 20, 2015
Grant date	Mar 27, 2018
Priority date	—
Expiry date	Mar 20, 2035

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 (CAMB (k−1)). The ambient HOA component (CAMB (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.