Title:
オーディオ信号を符号化する方法及び装置並びにオーディオ信号を復号する方法及び装置
Document Type and Number:
Japanese Patent JP6377730
Kind Code:
B2
Abstract:
The invention introduces a new concept for hierarchical coding of HOA content. A method for encoding a hierarchical audio bitstream comprises rendering a HOA input signal to surround sound, encoding the surround sound for a base layer output signal, decoding the encoded surround sound to obtain a reconstructed surround sound signal, performing dimensionality reduction on the received HOA input signal, calculating a residual between the dimensionality-reduced HOA signal and the reconstructed surround sound signal, encoding the residual signal, and multiplexing structural information about the HOA input signal, the encoded residuals and the encoded surround sound into a bitstream to obtain a hierarchical audio bitstream.
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Inventors:
Yaks, Peter
Kruger, Alexander
Kruger, Alexander
Application Number:
JP2016517237A
Publication Date:
August 22, 2018
Filing Date:
May 27, 2014
Export Citation:
Assignee:
Dolby International Arb
International Classes:
G10L19/008; G10L19/02
Domestic Patent References:
| JP2012133366A | ||||
| JP2010507115A |
Other References:
岩谷幸雄他,球面調和解析による音場表現-高次アンビソニックス技術の可能性-,日本音響学会誌,2011年11月 1日,67巻,11号,p.544-549
Erik HELLEROUD, et al.,SPATIAL REDUNDANCY IN HIGHER ORDER AMBISONICS AND ITS USE FOR LOW DELAY LOSSLESS COMPRESSION,Proceedings of the 2009 IEEE International Conference on Acoustics, Speech and Signal Processing(ICASSP 2009),2009年 4月19日,p.269-272
Erik HELLEROUD, et al.,SPATIAL REDUNDANCY IN HIGHER ORDER AMBISONICS AND ITS USE FOR LOW DELAY LOSSLESS COMPRESSION,Proceedings of the 2009 IEEE International Conference on Acoustics, Speech and Signal Processing(ICASSP 2009),2009年 4月19日,p.269-272
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Shinsuke Onuki
Tadahiko Ito
Shinsuke Onuki