1994-08-11
1997-01-07
MacDonald, Allen R.
395 228, 395 23, G10L 900
Patent
active
055925863
ABSTRACT:
A system for performing voice compression which includes, a conversion means for converting analog voice signals into discrete samples of digital voice data and collecting the discrete samples into segments, with a means for dividing the segments into subsegments and for producing therefrom a current voice subsegment. A pitch prediction means is used for determining the long term predicted gain of the current voice subsegment by comparing the current voice subsegment to reconstructed voice samples to produce a pitch predictor gain and a lag component and a pitch filter means is used for pitch filtering the current voice subsegment based on the pitch predictor gain and the lag component which then produces long term residual samples. The system includes a means for scaling the long term residual samples based on the peak amplitude of the long term residual samples to produce normalized long term residual samples and a means including a code book stored in a memory for locating a single memory address of a closest match between the normalized long term residual samples and the stored distinct normalized long term residual samples. The system includes an output means for providing the distinct memory address, the pitch predictor gain, the lag component and the peak amplitude for each voice subsegment and a means to reconstruct these samples based on these parameters.
REFERENCES:
patent: Re34034 (1992-08-01), O'Sullivan
patent: 3304372 (1967-02-01), Filipowsky et al.
patent: 3789165 (1974-01-01), Campanella et al.
patent: 3904830 (1975-09-01), Every, Sr. et al.
patent: 3973081 (1976-08-01), Hutchins
patent: 3997732 (1976-12-01), Every, Sr. et al.
patent: 4100377 (1978-07-01), Flanagan
patent: 4107471 (1978-08-01), Reed
patent: 4205202 (1980-05-01), Kahn
patent: 4284850 (1981-08-01), Clingenpeel
patent: 4354273 (1982-10-01), Araseki
patent: 4377860 (1983-03-01), Godbole
patent: 4403322 (1983-09-01), Kato et al.
patent: 4425661 (1984-01-01), Moses et al.
patent: 4445213 (1984-04-01), Baugh
patent: 4476559 (1984-10-01), Brolin et al.
patent: 4479195 (1984-10-01), Herr et al.
patent: 4479213 (1984-10-01), Galand et al.
patent: 4495620 (1985-01-01), Steele et al.
patent: 4500987 (1985-02-01), Hasegawa
patent: 4524244 (1985-06-01), Faggin et al.
patent: 4534024 (1985-08-01), Maxemchuk et al.
patent: 4546212 (1985-10-01), Crowder, Sr.
patent: 4578537 (1986-03-01), Faggin et al.
patent: 4587651 (1986-05-01), Nelson et al.
patent: 4593389 (1986-06-01), Wurzburg et al.
patent: 4598397 (1986-07-01), Nelson et al.
patent: 4609788 (1986-09-01), Miller et al.
patent: 4629829 (1986-12-01), Puhl et al.
patent: 4652703 (1987-03-01), Lu et al.
patent: 4660218 (1987-04-01), Hashimoto
patent: 4670874 (1987-06-01), Sato et al.
patent: 4697281 (1987-09-01), O'Sullivan
patent: 4700341 (1987-10-01), Huang
patent: 4707831 (1987-11-01), Weir et al.
patent: 4718082 (1988-01-01), Parker et al.
patent: 4740963 (1988-04-01), Eckley
patent: 4750169 (1988-06-01), Carse et al.
patent: 4751510 (1988-06-01), De Saint Michel et al.
patent: 4751736 (1988-06-01), Gupta et al.
patent: 4757527 (1988-07-01), Beniston et al.
patent: 4764955 (1988-08-01), Galand et al.
patent: 4807250 (1989-02-01), Tanaka
patent: 4809271 (1989-02-01), Kondo et al.
patent: 4813040 (1989-03-01), Futato
patent: 4827085 (1989-05-01), Yaniv et al.
patent: 4835765 (1989-05-01), Bergmans et al.
patent: 4839802 (1989-06-01), Wonak et al.
patent: 4845746 (1989-07-01), Li
patent: 4847900 (1989-07-01), Wakim
patent: 4862449 (1989-08-01), Hoefkens et al.
patent: 4864559 (1989-09-01), Perlman
patent: 4866732 (1989-09-01), Carey et al.
patent: 4887265 (1989-12-01), Felix
patent: 4890282 (1989-12-01), Lambert et al.
patent: 4901333 (1990-02-01), Hodgkiss
patent: 4905282 (1990-02-01), McGlynn et al.
patent: 4912756 (1990-03-01), Hop
patent: 4912758 (1990-03-01), Arbel
patent: 4914650 (1990-04-01), Sriram
patent: 4926448 (1990-05-01), Kraul et al.
patent: 4932048 (1990-06-01), Kenmochi et al.
patent: 4935954 (1990-06-01), Thompson et al.
patent: 4942569 (1990-07-01), Maeno
patent: 4953210 (1990-08-01), McGlynn et al.
patent: 4965789 (1990-10-01), Bottau et al.
patent: 4972457 (1990-11-01), O'Sullivan
patent: 4972462 (1990-11-01), Shibata
patent: 4972483 (1990-11-01), Carey
patent: 4977591 (1990-12-01), Chen et al.
patent: 4991169 (1991-02-01), Davis et al.
patent: 4995059 (1991-02-01), Ishikawa
patent: 4998241 (1991-03-01), Brox et al.
patent: 5001710 (1991-03-01), Gawrys et al.
patent: 5001745 (1991-03-01), Pollock
patent: 5005183 (1991-04-01), Carey et al.
patent: 5008926 (1991-04-01), Misholi
patent: 5014232 (1991-05-01), Andre
patent: 5020058 (1991-05-01), Holden et al.
patent: 5025443 (1991-06-01), Gupta
patent: 5036513 (1991-07-01), Greenblatt
patent: 5044010 (1991-08-01), Frenkiel et al.
patent: 5046188 (1991-09-01), Molnar
patent: 5051720 (1991-09-01), Kittirutsunetorn
patent: 5062133 (1991-10-01), Melrose
patent: 5065395 (1991-11-01), Shenoi et al.
patent: 5065425 (1991-11-01), Lecomte et al.
patent: 5081647 (1992-01-01), Bremer
patent: 5083310 (1992-01-01), Drory
patent: 5086471 (1992-02-01), Tanaka et al.
patent: 5099472 (1992-03-01), Townsend et al.
patent: 5107519 (1992-04-01), Ishikawa
patent: 5115429 (1992-05-01), Hluchyj et al.
patent: 5121385 (1992-06-01), Tominaga et al.
patent: 5127001 (1992-06-01), Steagall et al.
patent: 5127041 (1992-06-01), O'Sullivan
patent: 5132966 (1992-07-01), Hayano et al.
patent: 5136586 (1992-08-01), Greenblatt
patent: 5138662 (1992-08-01), Amano et al.
patent: 5146470 (1992-09-01), Fujii et al.
patent: 5150410 (1992-09-01), Bertrand
patent: 5151937 (1992-09-01), Chujo et al.
patent: 5153897 (1992-10-01), Sumiyoshi et al.
patent: 5162812 (1992-11-01), Aman et al.
patent: 5177734 (1993-01-01), Cummiskey et al.
patent: 5182762 (1993-01-01), Shirai et al.
patent: 5187591 (1993-02-01), Guy et al.
patent: 5187692 (1993-02-01), Haneda et al.
patent: 5193110 (1993-03-01), Jones et al.
patent: 5195130 (1993-03-01), Weiss et al.
patent: 5208812 (1993-05-01), Dudek et al.
patent: 5208850 (1993-05-01), Kino
patent: 5214656 (1993-05-01), Chung et al.
patent: 5228026 (1993-07-01), Albrow et al.
patent: 5233660 (1993-08-01), Chen
patent: 5235595 (1993-08-01), O'Dowd
patent: 5249218 (1993-09-01), Sainton
patent: 5258983 (1993-11-01), Lane et al.
patent: 5261027 (1993-11-01), Taniguchi et al.
patent: 5263019 (1993-11-01), Chu
patent: 5272695 (1993-12-01), Makino et al.
patent: 5276703 (1994-01-01), Budin et al.
patent: 5278900 (1994-01-01), Van Gerwen et al.
patent: 5282197 (1994-01-01), Kreitzer
patent: 5283638 (1994-02-01), Engberg et al.
patent: 5283819 (1994-02-01), Glick et al.
patent: 5289539 (1994-02-01), Maruyama
patent: 5295136 (1994-03-01), Ashley et al.
patent: 5305312 (1994-04-01), Fornek et al.
patent: 5307413 (1994-04-01), Denzer
patent: 5309562 (1994-05-01), Li
patent: 5313498 (1994-05-01), Sano
patent: 5317604 (1994-05-01), Osterweil
patent: 5319682 (1994-06-01), Clark
patent: 5327520 (1994-07-01), Chen
patent: 5329472 (1994-07-01), Sugiyama
patent: 5341374 (1994-08-01), Lewen et al.
patent: 5343521 (1994-08-01), Jullien et al.
patent: 5355365 (1994-10-01), Bhat et al.
patent: 5371853 (1994-12-01), Kao et al.
patent: 5381412 (1995-01-01), Otani
patent: 5390239 (1995-02-01), Morris et al.
patent: 5390250 (1995-02-01), Janse et al.
patent: 5406557 (1995-04-01), Baudoin
patent: 5414796 (1995-05-01), Jacobs et al.
patent: 5479407 (1995-12-01), Ko et al.
Zilog Intelligent Peripheral Controllers, "Z84C90 CMOS Z80.RTM. KIO Serial/Parallel/counter/timer," pp. 205-224, published in 1991.
AT&T Microelectronics, "WE.RTM. DSP16C Digital Signal processor/CODEC Preliminary Data Sheet," 32 pages, published in May 1991.
AT&T Microelectronics, "T7540 Digital Telephone CODEC Data Sheet and Addendum," pp. 1-4, published in Jul. 1991.
AT&T Microelectronics, "T7540 Digital Telephone CODEC Preliminary Data Sheet," pp. 1-64, published in Jan. 1991.
Zilog Intelligent Peripheral Controllers, "Z84C01 Z80.RTM. CPU with Clock Generator/Controller," pp. 43-73, published in 1991.
European Search Report for Application No. EP 93403164 comp
Maitra Sidhartha
Thanawala Ashish
Young Steve
MacDonald Allen R.
Multi-Tech Systems, Inc.
Onka Thomas J.
LandOfFree
Voice compression system and 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 Voice compression system and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Voice compression system and method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1772103