Title:
METHOD AND APPARATUS FOR CONTROLLING AUDIO FRAME LOSS CONCEALMENT
Document Type and Number:
Japanese Patent JP2019061254
Kind Code:
A
Abstract:
To provide a method and an apparatus for controlling a concealment method for a lost audio frame of a received audio signal.SOLUTION: A method for a decoder to conceal a lost audio frame comprises detecting in a property of a previously received and reconstructed audio signal, or in a statistical property of observed frame losses, a condition for which substitution of a lost frame provides relatively reduced quality. When such a condition is detected, a concealment method is modified by selectively adjusting a phase or spectrum magnitude of a substitution frame spectrum.SELECTED DRAWING: Figure 10
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Inventors:
STEFAN BRUHN
JONAS SVEDBERG
JONAS SVEDBERG
Application Number:
JP2018217479A
Publication Date:
April 18, 2019
Filing Date:
November 20, 2018
Export Citation:
Assignee:
ERICSSON TELEFON AB L M
International Classes:
G10L19/005
Domestic Patent References:
| JP2006526177A | 2006-11-16 | |||
| JP2008058667A | 2008-03-13 |
Foreign References:
| US20050058145A1 | 2005-03-17 |
Other References:
HUAN HOU: "Real-time audio error concealment method based on sinusoidal model", AUDIO, LANGUAGE AND IMAGE PROCESSING, 2008. ICALIP 2008. INTERNATIONAL CONFERENCE ON, JPN6016008306, 7 July 2008 (2008-07-07), US, pages 22 - 28, XP031298365, ISSN: 0004197879
MACIEJ BARTKOWIAK: "Mitigation of long gaps in music using hybrid sinusoidal+noise model with context adaptation", SIGNALS AND ELECTRONIC SYSTEMS (ICSES), 2010 INTERNATIONAL CONFERENCE ON, JPN6016008309, 7 September 2010 (2010-09-07), US, pages 435 - 438, XP031770699, ISSN: 0004197880
JONAS LINDBLOM: "Packet loss concealment based on sinusoidal extrapolation", ACOUSTICS, SPEECH, AND SIGNAL PROCESSING (ICASSP), 2002 IEEE INTERNATIONAL CONFERENCE ON, JPN6016008310, 13 May 2002 (2002-05-13), US, pages 173 - 176, ISSN: 0004197881
近藤和弘: "線形予測を用いた音声パケット欠落補間方式の一検討", 日本音響学会２００３年秋季研究発表会講演論文集−Ｉ−, JPN6020001958, 17 September 2003 (2003-09-17), JP, ISSN: 0004197882
MACIEJ BARTKOWIAK: "Mitigation of long gaps in music using hybrid sinusoidal+noise model with context adaptation", SIGNALS AND ELECTRONIC SYSTEMS (ICSES), 2010 INTERNATIONAL CONFERENCE ON, JPN6016008309, 7 September 2010 (2010-09-07), US, pages 435 - 438, XP031770699, ISSN: 0004197880
JONAS LINDBLOM: "Packet loss concealment based on sinusoidal extrapolation", ACOUSTICS, SPEECH, AND SIGNAL PROCESSING (ICASSP), 2002 IEEE INTERNATIONAL CONFERENCE ON, JPN6016008310, 13 May 2002 (2002-05-13), US, pages 173 - 176, ISSN: 0004197881
近藤和弘: "線形予測を用いた音声パケット欠落補間方式の一検討", 日本音響学会２００３年秋季研究発表会講演論文集−Ｉ−, JPN6020001958, 17 September 2003 (2003-09-17), JP, ISSN: 0004197882
Attorney, Agent or Firm:
Yasunori Otsuka
Yasuhiro Otsuka
Shiro Takayanagi
Shuji Kimura
Osamu Shimoyama
Yasuhiro Otsuka
Shiro Takayanagi
Shuji Kimura
Osamu Shimoyama