Speech and music signal coder/decoder

Details Speech and music signal coder/decoder Speech and music signal coder/decoder

2005-03-08

2005-03-08

McFadden, Susan (Department: 2655)

Data processing: speech signal processing, linguistics, language

Speech signal processing

Synthesis

C702S010000, C702S010000

Reexamination Certificate

active

06865534

ABSTRACT:
It is an object of the invention to excellently code a speech and music signal over all of bands in a speech and music signal code decoding apparatus having a band divided constitution. In order to achieve the object, a residue vector is generated by using an inverse filter (230of FIG.3) from a difference vector outputted from a first differencer (180of FIG.3). A band selecting circuit (250of FIG.3) generates n pieces of subvectors by using a component included in an arbitrary band in the residue vector subjected to orthogonal transformation. An orthogonal transformation coefficient quantizing circuit (260of FIG.3) quantizes n pieces of the subvectors.

REFERENCES:
patent: 5526464 (1996-06-01), Mermelstein
patent: 5778335 (1998-07-01), Ubale et al.
patent: 5819212 (1998-10-01), Matsumoto et al.
patent: 6345246 (2002-02-01), Moriya et al.
patent: 2-123828 (1990-05-01), None
patent: 4-301900 (1992-10-01), None
patent: 5-113799 (1993-05-01), None
patent: 5-216500 (1993-08-01), None
patent: 5265492 (1993-10-01), None
patent: 7-273659 (1995-10-01), None
patent: 8263096 (1996-10-01), None
patent: 946233 (1997-02-01), None
patent: 9-127985 (1997-05-01), None
patent: 9127987 (1997-05-01), None
patent: 9127994 (1997-05-01), None
patent: 9-127995 (1997-05-01), None
patent: 9130260 (1997-05-01), None
patent: 9-281995 (1997-10-01), None
patent: 10-11094 (1998-01-01), None
patent: 10-63297 (1998-03-01), None
GSM 06.60 version 6.0.1 Release 1997, “Digital Cellular Telecommunications System (Phase 2+); Enhanced Full Rate (EFR) Speech Transcoding” (ETSI EN 300 726, 2000) pp. 23-26.
K. Ozawa and M. Serizawa, “High Quality Multi-Pulse Based CELP Speech Coding at 6.4 kbit/s and Its Subjective Evaluation” (Proceeding of ICASSP, pp. 153-156, 1998).
R.E. Crochiere and L.R. Rabiner “Multirate Digital Signal Processing” (Prentice-Hall Signal Processing Series, pp. 26-43, 1983).
M.R. Schroeder and Bishnu S. Atal “Code excited linear prediction (CELP): High quality speech at very low bit rates” (Proceeding of ICASSP, pp. 937-940, 1985).
A. Ubale and Allen Gersho “Multi-band CELP Coding of Speech and Music” (Proceeding of IEEE Workshop on Speech Coding for Telecommunications, pp. 101-102, 1997.
ITU-T Recommendation G.729, “Coding of Speech at 8 kbits/s Using Conjugate-Structure Algebraic-Code-Excited Linear-Prediction (CS-ACSLP)”, pp. 9-22, 1996.
Japanese Office Action dated May 21, 2002 (w/ English translation of relevant portion).
Japanese Office Action issued Jun. 3, 2003 (w/ English translation of relevant portion.
Atsushi Murashima, et al., “Wideband Audio Coding Based on a Subband CELP with Pulse Excitations Using Common Pulse Positions,” C&C Media Research Laboratories, NEC Corporation (1998), p. 235.
Atsushi Murashima, et al., “Wideband Audio Coding Based on a Subband CELP with Frequency-domain Excitation Coding,” C&C Media Research Laboratories, NEC Corporation, Proceedings of the 1998 Information and Systems Society Conference of IEICE, (1998), p. 322.

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