Inventor
ASAKAWA YOSHIAKI
JP13 patents
Patents
13 patentsUS5983172ANov 9, 1999
Method for coding/decoding, coding/decoding device, and videoconferencing apparatus using such device
HITACHI LTD97 citations97
US5384891AJan 24, 1995
Vector quantizing apparatus and speech analysis-synthesis system using the apparatus
HITACHI LTD58 citations95
US4975957ADec 4, 1990
Character voice communication system
HITACHI LTD75 citations95
US5566191AOct 15, 1996
Soft decision maximum likelihood decoding method with adaptive metric
HITACHI LTD58 citations93
US5142582AAug 25, 1992
Speech coding and decoding system with background sound reproducing function
HITACHI LTD24 citations92
US5119424AJun 2, 1992
Speech coding system using excitation pulse train
HITACHI LTD44 citations92
US5077798ADec 31, 1991
Method and system for voice coding based on vector quantization
HITACHI LTD39 citations92
US4776015AOct 4, 1988
Speech analysis-synthesis apparatus and method
HITACHI LTD38 citations92
US5956686ASep 21, 1999
Audio signal coding/decoding method
HITACHI LTD26 citations91
US5060268AOct 22, 1991
Speech coding system and method
HITACHI LTD17 citations74
US4985923AJan 15, 1991
High efficiency voice coding system
HITACHI LTD15 citations74
US4528688AJul 9, 1985
Continuous speech recognition method
HITACHI LTD19 citations74
US4718095AJan 5, 1988
Speech recognition method
HITACHI LTD17 citations73