Patent · US Active

Method and apparatus for compressing and decompressing a higher order ambisonics representation for a sound field

US10609501B2 · kind B2 · utility

3Cited by

4References

2Claims

0Family size

Assignee

Dolby Laboratories Licensing Corporation · US

Inventors

Alexander Krueger · Burgdorf, DE
Sven Kordon · Wunstorf, DE
Johannes Boehm · Göttingen, DE

Key dates

Filing date	Feb 14, 2019
Grant date	Mar 31, 2020
Priority date	—
Expiry date	Feb 14, 2039

Classification

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

Abstract

The invention improves HOA sound field representation compression and decompression. A decoder decodes compressed dominant directional signals and compressed residual component signals so as to provide decompressed dominant directional signals and decompressed time domain signals representing a residual HOA component in a spatial domain. A re-correlator re-correlates the decompressed time domain signals to obtain a corresponding reduced-order residual HOA component. A processor determines a decompressed residual HOA component based on the corresponding reduced-order residual HOA component, and determines predicted directional signals based on at least a parameter. The processor is further configured to determine an HOA sound field representation based on the decompressed dominant directional signals, the predicted directional signals, and the decompressed residual HOA component.

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