Speech and music signal coder/decoder

Data processing: speech signal processing – linguistics – language – Speech signal processing – Synthesis

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Other Related Categories

C702S010000, C702S010000

Type

Reexamination Certificate

Status

active

Patent number

06865534

Description

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.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Speech and music signal coder/decoder does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Speech and music signal coder/decoder, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Speech and music signal coder/decoder will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3425758

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.