Data processing apparatus

Details Data processing apparatus Data processing apparatus

2002-01-24

2008-12-16

Chawan, Vijay B (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

C704S219000, C704S262000, C704S220000, C700S094000, C375S316000

Reexamination Certificate

active

07467083

ABSTRACT:
The present invention relates to a data processing apparatus capable of obtaining high-quality sound data. A tap generation section121generates a prediction tap used for a process in a prediction section125by extracting decoded speech data in a predetermined positional relationship with subject data of interest within the decoded speech data such that coded data is decoded by a CELP method and by extracting an I code located in a subframe according to a position of the subject data in the subject subframe. Similarly to the tap generation section122, a tap generation section122generates a class tap used for a process in a classification section123. The classification section123performs classification on the basis of the class tap, and a coefficient memory124outputs a tap coefficient corresponding to the classification result. The prediction section125performs a linear prediction computation by using the prediction tap and the tap coefficient and outputs high-quality decoded speech data. The present invention can be applied to mobile phones for transmitting and receiving speech.

REFERENCES:
patent: 4868867 (1989-09-01), Davidson et al.
patent: 5233660 (1993-08-01), Chen
patent: 5305332 (1994-04-01), Ozawa
patent: 5359696 (1994-10-01), Gerson et al.
patent: 5361323 (1994-11-01), Murata et al.
patent: 5634085 (1997-05-01), Yoshikawa et al.
patent: 5651091 (1997-07-01), Chen
patent: 5680507 (1997-10-01), Chen
patent: 5745871 (1998-04-01), Chen
patent: 6041297 (2000-03-01), Goldberg
patent: 6691082 (2004-02-01), Aguilar et al.
patent: 6990475 (2006-01-01), Kondo et al.
patent: 2001/0000190 (2001-04-01), Oshikiri et al.
patent: 2003/0055632 (2003-03-01), Chen
patent: 2003/0152165 (2003-08-01), Kondo et al.
patent: 450064 (1991-10-01), None
patent: 0 459 358 (1991-12-01), None
patent: 0 488 751 (1992-06-01), None
patent: 0 488 803 (1992-06-01), None
patent: 0 532 225 (1993-03-01), None
patent: 0 602 826 (1994-06-01), None
patent: 1 308 927 (2003-05-01), None
patent: 63-214032 (1988-09-01), None
patent: 1-205199 (1989-08-01), None
patent: 4-30200 (1992-02-01), None
patent: 4-502675 (1992-05-01), None
patent: 4-212999 (1992-08-01), None
patent: 4-213000 (1992-08-01), None
patent: 6-131000 (1994-05-01), None
patent: 6-214600 (1994-08-01), None
patent: 7-50586 (1995-02-01), None
patent: 11-3098 (1999-01-01), None
patent: 2971266 (1999-08-01), None
patent: WO 91/03790 (1991-03-01), None
Schroeder et al. “Code Excited Linear Prediction (CELP): High-Quality Speech at Very Low Bit Rates,” Proc. IEEE Int. Conf. Acoust. Speech, Signal Processing, pp. 937-940 (1985).

Affiliated with

Also associated with

Rating

Data processing apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Data processing apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Data processing apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4032569