Data processing: speech signal processing – linguistics – language – Speech signal processing – For storage or transmission
Reexamination Certificate
2006-11-29
2011-12-27
Azad, Abul K (Department: 2626)
Data processing: speech signal processing, linguistics, language
Speech signal processing
For storage or transmission
C704S501000
Reexamination Certificate
active
08086452
ABSTRACT:
A scalable coding apparatus is provided to suppress deterioration of a quality of a coded signal in a normal frame next to a frame compensated for the occurrence of a data loss. The scalable coding apparatus is provided with a core-layer coding section (11) to carry out core-layer coding for the n-th frame input audio signal, an ordinary coding section (121) to generate expanding-layer ordinary-coding layer L2(n) by carrying out ordinary-coding of an expanding layer for the input audio signal, a deterioration-compensation coding section (123) to generate an expanding-layer-deterioration coding data L2′(n) by carrying out compensation for quality deterioration of coded audio in a current frame due to a past frame loss, a judging section (125) to determine whether either the expanding-layer ordinary-coding data L2(n) or the expanding-layer deterioration-coding data L2′(n) should be output from the expanding-layer coding section (12) as expanding-layer coding data of the current frame.
REFERENCES:
patent: 2002/0065648 (2002-05-01), Amano
patent: 2005/0147164 (2005-07-01), Wu et al.
patent: 2006/0122830 (2006-06-01), Lee et al.
patent: 2007/0253481 (2007-11-01), Oshikiri
patent: 2007/0271092 (2007-11-01), Ehara et al.
patent: 2008/0059166 (2008-03-01), Ehara
patent: 2008/0126082 (2008-05-01), Ehara et al.
patent: 2008/0162148 (2008-07-01), Goto et al.
patent: 2010/0182499 (2010-07-01), Setton et al.
patent: 10-97295 (1989-04-01), None
patent: 2002-162998 (2002-06-01), None
patent: 2003-202898 (2003-07-01), None
patent: 2003-249957 (2003-09-01), None
patent: 2005/109402 (2005-11-01), None
Jung et al.; A bit-rate/bandwidth scalable speech coder based on ITU-T G.723.1 standard; ICASSP 2004, pp. 285-288, vol. 1.
ISO/IEC 14496-3: 2001 (E) Part-3 Audio (MPEG-4) Subpart-3 Speech Coding (CELP).
ISO/IEC 14496-3: 2001 (E) Part-3 Audio (MPEG-4) Subpart-1 Main Annex 1.B (Informative) Error Protection tool.
Johansson et al., “Bandwidth efficient amr operation for voip”, Speech Coding, 2002, IEEE Workshop Proceedings, Oct. 6-9, 2002, Piscataway, NJ, USA, IEEE, Oct. 6, 2002, pp. 150-152, XP010647243.
Azad Abul K
Greenblum & Bernstein P.L.C.
Panasonic Corporation
LandOfFree
Scalable coding apparatus and scalable coding method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Scalable coding apparatus and scalable coding method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Scalable coding apparatus and scalable coding method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4307381