Title:
オーディオ再生のためのオーディオ音場表現をレンダリングするための方法および装置
Document Type and Number:
Japanese Patent JP7368563
Kind Code:
B2
Abstract:
The invention discloses rendering sound field signals, such as Higher-Order Ambisonics (HOA), for arbitrary loudspeaker setups, where the rendering results in highly improved localization properties and is energy preserving. This is obtained by a new type of decode matrix for sound field data, and a new way to obtain the decode matrix. In a method for rendering an audio sound field representation for arbitrary spatial loudspeaker setups, the decode matrix (D) for the rendering to a given arrangement of target loudspeakers is obtained by steps of obtaining a number (L) of target speakers, their positions ( OL), positions ( OS) of a spherical modeling grid and a HOA order (N), generating (141) a mix matrix (G) from the positions ( OS) of the modeling grid and the positions ( OL) of the speakers, generating (142) a mode matrix (Ψ̃) from the positions ( OS) of the spherical modeling grid and the HOA order, calculating (143) a first decode matrix (D̂) from the mix matrix (G) and the mode matrix (Ψ̃), and smoothing and scaling (144,145) the first decode matrix (D̂) with smoothing and scaling coefficients.
Inventors:
Behm, Johannes
Kaylor, Florian
Kaylor, Florian
Application Number:
JP2022123700A
Publication Date:
October 24, 2023
Filing Date:
August 03, 2022
Export Citation:
Assignee:
Dolby International Arb
International Classes:
H04S7/00
Foreign References:
| WO2011117399A1 | ||||
| WO2011090834A1 | ||||
| EP2094032A1 |
Other References:
F.Zotter, H.Pomberger, M.Noisternig,Energy-preserving ambisonic decoding,米国,Acta Acustica united with Acustica,2012年,p37-47,98(1),January/February 2012
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Osamu Miyazaki
Tadahiko Ito
Osamu Miyazaki