We propose two methods for coding and transmitting three-dimensional multichannel sound signals: scalable coding and transmission, and modeling of the quantization error. The first method converts N-channel sound signals into M-channel basic and (N-M)-channel additional signals using a matrix operation. The matrix is trained by simulated annealing to reduce its condition number and the energy of additional signals. The unmasking artifact may occur when the N-channel signals are restored from the decoded signals using the inverse matrix. The second method estimates the quantization error signals by the polynomial approximation of the decoded signals. Experimental results showed that the combination of both methods could realize a 1.2 Mbps scalable transmission of 22-channel sounds without a notable sound degradation.

Author: Ando, Akio
Affiliations: NHK Science and Technical Research Labratories, Setagaya, Tokyo, Japan; Tokyo Institute of Technology, Meguro, Tokyo, Japan(See document for exact affiliation information.)
AES Convention: 132 (April 2012) Paper Number: 8647
Publication Date: April 26, 2012 Import into BibTeX
Subject: Spatial Audio
Permalink: https://www.aes.org/e-lib/browse.cfm?elib=16285

Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!

This paper costs $33 for non-members and is free for AES members and E-Library subscribers.

Learn more about the AES E-Library

E-Library Location: (CD 132Papers)   /conv/132/8647.pdf

Start a discussion about this paper!