Mastering Signal Processing in MPEG SAOC

Kwangki KIM; Minsoo HAHN; Jinsul KIM

doi:10.1587/transinf.E95.D.3053

Mastering Signal Processing in MPEG SAOC

Kwangki KIM, Minsoo HAHN, Jinsul KIM

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MPEG spatial audio object coding (SAOC) is a new audio coding standard which efficiently represents various audio objects as a down-mix signal and spatial parameters. MPEG SAOC has a backward compatibility with existing playback systems for the down-mix signal. If a mastering signal is used for providing CD-like sound quality instead of the down-mix signal, an output signal decoded with the mastering signal may be easily degraded due to the difference between the down-mix and the mastering signals. To successfully use the mastering signal in MPEG SAOC, the difference between two signals should be eliminated. As a simple mastering signal processing, we propose a mastering signal processing using the mastering down-mix gain (MDG) which is similar to the arbitrary down-mix gain of MPEG Surround. Also, we propose an enhanced mastering signal processing using the MDG bias in order to reduce quantization errors of the MDG. Experimental results show that the proposed schemes can improve sound quality of the output signal decoded with the mastering signal. Especially, the enhanced method shows better performance than the simple method in the aspects of the quantization errors and the sound quality.

Publication: IEICE TRANSACTIONS on Information Vol.E95-D No.12 pp.3053-3059

Publication Date: 2012/12/01

Publicized

Online ISSN: 1745-1361

DOI: 10.1587/transinf.E95.D.3053

Type of Manuscript: PAPER

Category: Speech and Hearing

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Kwangki KIM, Minsoo HAHN, Jinsul KIM, "Mastering Signal Processing in MPEG SAOC" in IEICE TRANSACTIONS on Information, vol. E95-D, no. 12, pp. 3053-3059, December 2012, doi: 10.1587/transinf.E95.D.3053.
Abstract: MPEG spatial audio object coding (SAOC) is a new audio coding standard which efficiently represents various audio objects as a down-mix signal and spatial parameters. MPEG SAOC has a backward compatibility with existing playback systems for the down-mix signal. If a mastering signal is used for providing CD-like sound quality instead of the down-mix signal, an output signal decoded with the mastering signal may be easily degraded due to the difference between the down-mix and the mastering signals. To successfully use the mastering signal in MPEG SAOC, the difference between two signals should be eliminated. As a simple mastering signal processing, we propose a mastering signal processing using the mastering down-mix gain (MDG) which is similar to the arbitrary down-mix gain of MPEG Surround. Also, we propose an enhanced mastering signal processing using the MDG bias in order to reduce quantization errors of the MDG. Experimental results show that the proposed schemes can improve sound quality of the output signal decoded with the mastering signal. Especially, the enhanced method shows better performance than the simple method in the aspects of the quantization errors and the sound quality.
URL: https://globals.ieice.org/en_transactions/information/10.1587/transinf.E95.D.3053/_p

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@ARTICLE{e95-d_12_3053,
author={Kwangki KIM, Minsoo HAHN, Jinsul KIM, },
journal={IEICE TRANSACTIONS on Information},
title={Mastering Signal Processing in MPEG SAOC},
year={2012},
volume={E95-D},
number={12},
pages={3053-3059},
abstract={MPEG spatial audio object coding (SAOC) is a new audio coding standard which efficiently represents various audio objects as a down-mix signal and spatial parameters. MPEG SAOC has a backward compatibility with existing playback systems for the down-mix signal. If a mastering signal is used for providing CD-like sound quality instead of the down-mix signal, an output signal decoded with the mastering signal may be easily degraded due to the difference between the down-mix and the mastering signals. To successfully use the mastering signal in MPEG SAOC, the difference between two signals should be eliminated. As a simple mastering signal processing, we propose a mastering signal processing using the mastering down-mix gain (MDG) which is similar to the arbitrary down-mix gain of MPEG Surround. Also, we propose an enhanced mastering signal processing using the MDG bias in order to reduce quantization errors of the MDG. Experimental results show that the proposed schemes can improve sound quality of the output signal decoded with the mastering signal. Especially, the enhanced method shows better performance than the simple method in the aspects of the quantization errors and the sound quality.},
keywords={},
doi={10.1587/transinf.E95.D.3053},
ISSN={1745-1361},
month={December},}

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TY - JOUR
TI - Mastering Signal Processing in MPEG SAOC
T2 - IEICE TRANSACTIONS on Information
SP - 3053
EP - 3059
AU - Kwangki KIM
AU - Minsoo HAHN
AU - Jinsul KIM
PY - 2012
DO - 10.1587/transinf.E95.D.3053
JO - IEICE TRANSACTIONS on Information
SN - 1745-1361
VL - E95-D
IS - 12
JA - IEICE TRANSACTIONS on Information
Y1 - December 2012
AB - MPEG spatial audio object coding (SAOC) is a new audio coding standard which efficiently represents various audio objects as a down-mix signal and spatial parameters. MPEG SAOC has a backward compatibility with existing playback systems for the down-mix signal. If a mastering signal is used for providing CD-like sound quality instead of the down-mix signal, an output signal decoded with the mastering signal may be easily degraded due to the difference between the down-mix and the mastering signals. To successfully use the mastering signal in MPEG SAOC, the difference between two signals should be eliminated. As a simple mastering signal processing, we propose a mastering signal processing using the mastering down-mix gain (MDG) which is similar to the arbitrary down-mix gain of MPEG Surround. Also, we propose an enhanced mastering signal processing using the MDG bias in order to reduce quantization errors of the MDG. Experimental results show that the proposed schemes can improve sound quality of the output signal decoded with the mastering signal. Especially, the enhanced method shows better performance than the simple method in the aspects of the quantization errors and the sound quality.
ER -