An effective hybrid low delay packet loss concealment algorithm for MDCT-based audio codec

Lin, Z; Lu, J; Qiu, X

An effective hybrid low delay packet loss concealment algorithm for MDCT-based audio codec

Lin, Z Lu, J Qiu, X

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Publication Type:: Journal Article
Citation:: Applied Acoustics, 2019, 154 pp. 170 - 175
Issue Date:: 2019-11-01

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Field	Value	Language
dc.contributor.author	Lin, Z	en_US
dc.contributor.author	Lu, J	en_US
dc.contributor.author	Qiu, X https://orcid.org/0000-0002-5181-1220	en_US
dc.date.issued	2019-11-01	en_US
dc.identifier.citation	Applied Acoustics, 2019, 154 pp. 170 - 175	en_US
dc.identifier.issn	0003-682X	en_US
dc.identifier.uri	http://hdl.handle.net/10453/134521
dc.description.abstract	© 2019 Elsevier Ltd This paper proposes a hybrid packet loss concealment (PLC) algorithm for the MDCT-based audio codec with different PLC strategies on tone dominant source signals and noise like signals respectively. It is meaningful to find that the phase angle of the MDCT-MDST coefficients decreases linearly with the increase of the frame index but the amplitude keeps unchanged for the stationary source signal with dominant tonal components. Therefore an efficient frame interpolation method is designed to accurately estimate the phase angle and the magnitude of the MDCT-MDST coefficients of the lost frame. For the noise-like signals without overwhelming tonal components, a modified shaped-noise insertion is proposed to improve the audio perception. Both objective and subjective test results show that the proposed algorithm provides better performance than the existing ones for both music and voiced speech signals.	en_US
dc.relation.ispartof	Applied Acoustics	en_US
dc.relation.isbasedon	10.1016/j.apacoust.2019.04.036	en_US
dc.rights	info:eu-repo/semantics/embargoedAccess
dc.subject.classification	Acoustics	en_US
dc.title	An effective hybrid low delay packet loss concealment algorithm for MDCT-based audio codec	en_US
dc.type	Journal Article
utslib.citation.volume	154	en_US
utslib.for	0203 Classical Physics	en_US
utslib.for	0913 Mechanical Engineering	en_US
utslib.for	1201 Architecture	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Mechanical and Mechatronic Engineering
utslib.copyright.status	open_access	*
utslib.copyright.embargo	2021-11-01T00:00:00+1100
pubs.publication-status	Published	en_US
pubs.volume	154	en_US

Abstract:

© 2019 Elsevier Ltd This paper proposes a hybrid packet loss concealment (PLC) algorithm for the MDCT-based audio codec with different PLC strategies on tone dominant source signals and noise like signals respectively. It is meaningful to find that the phase angle of the MDCT-MDST coefficients decreases linearly with the increase of the frame index but the amplitude keeps unchanged for the stationary source signal with dominant tonal components. Therefore an efficient frame interpolation method is designed to accurately estimate the phase angle and the magnitude of the MDCT-MDST coefficients of the lost frame. For the noise-like signals without overwhelming tonal components, a modified shaped-noise insertion is proposed to improve the audio perception. Both objective and subjective test results show that the proposed algorithm provides better performance than the existing ones for both music and voiced speech signals.

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http://hdl.handle.net/10453/134521