Adaptive coding of non-negative factorization parameters with application to informed source separation
Max Bläser, Christian Rohlfing, Yingbo Gao, Mathias Wien
Presented at the 43rd IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2018),
15-20 April 2018, Calgary, Canada
Conference homepage
Abstract
Informed source separation (ISS) uses source separation for extracting audio objects out of their downmix given some pre-computed parameters. In recent years, non-negative tensor factorization (NTF) has proven to be a good choice for compressing audio objects at an encoding stage. At the decoding stage, these parameters are used to separate the downmix with Wiener-filtering. The quantized NTF parameters have to be encoded to a bitstream prior to transmission.
In this paper, we propose to use context-based adaptive binary arithmetic coding (CABAC) for this task. CABAC is widely used in the video coding community and exploits local signal statistics. We adapt CABAC to the task of NTF-based ISS and show that our contribution outperforms reference coding methods.
Code
A full MATLAB implementation of the proposed algorithm and a standalone CABAC interface for MATLAB can be found on Github.NOTICE FOR IEEE PUBLICATIONS: © IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works, must be obtained from the IEEE. Contact: Manager, Copyrights and Permissions / IEEE Service Center / 445 Hoes Lane / P.O. Box 1331 / Piscataway, NJ 08855-1331, USA. Telephone: + Intl. 908-562-3966.