Title:
AUDIO SIGNAL ENCODING METHOD AND APPARATUS AND AUDIO SIGNAL DECODING METHOD AND APPARATUS
Document Type and Number:
Japanese Patent JP2018165841
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To introduce a new concept for hierarchically encoding a HOA content.SOLUTION: A method of encoding a hierarchical audio bit stream has a step of subjecting an HOA input signal to rendering to obtain a surround sound, a step of encoding the surround sound of a base layer output signal, a step of decoding the encoded surround sound to obtain a reconfigured surround sound signal, a step of executing dimension reduction of the HOA input signal, a step of calculating a residual between the dimension-reduced HOA signal and the restructured surround sound signal, a step of encoding the residual, and a step of multiplexing configuration information of the HOA input signal, the encoded residual, and the encoded surround sound to obtain a bit stream and of thereby obtain the hierarchical audio bit stream.SELECTED DRAWING: Figure 3
Inventors:
PETER JAX
ALEXANDER KRUEGER
ALEXANDER KRUEGER
Application Number:
JP2018139369A
Publication Date:
October 25, 2018
Filing Date:
July 25, 2018
Export Citation:
Assignee:
DOLBY INT AB
International Classes:
G10L19/008; H04S7/00
Domestic Patent References:
| JP2015525897A | 2015-09-07 | |||
| JP2012133366A | 2012-07-12 | |||
| JP2010507115A | 2010-03-04 |
Foreign References:
| WO2014014600A1 | 2014-01-23 | |||
| US20120155653A1 | 2012-06-21 |
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Shinsuke Onuki
Tadahiko Ito
Shinsuke Onuki