Inventor
KITAYAMA SEISHI
JP8 patents
Patents
8 patentsUS4610022ASep 2, 1986
Voice encoding and decoding device
KOKUSAI DENSHIN DENWA CO LTD87 citations94
US4516259AMay 7, 1985
Speech analysis-synthesis system
KOKUSAI DENSHIN DENWA CO LTD59 citations94
US4633046ADec 30, 1986
Adaptive echo canceller
KOKUSAI DENSHIN DENWA CO LTD30 citations88
US4232400ANov 4, 1980
Echo control system
KOKUSAI DENSHIN DENWA CO LTD22 citations81
US4064378ADec 20, 1977
Echo cancelling system for multiplex telephone circuits
KOKUSAI DENSHIN DENWA CO LTD31 citations79
US4479036AOct 23, 1984
Echo control system
KOKUSAI DENSHIN DENWA CO LTD15 citations73
US4126770ANov 21, 1978
Echo canceller
KOKUSAI DENSHIN DENWA CO LTD18 citations71
US4282406AAug 4, 1981
Adaptive pitch detection system for voice signal
KOKUSAI DENSHIN DENWA CO LTD16 citations67