Inventor

TZENG FORREST F

US2 patents

Patents

2 patents

US5293449AMar 8, 1994

Analysis-by-synthesis 2,4 kbps linear predictive speech codec

COMSAT CORP225 citations92

US5459784AOct 17, 1995

Dual-tone multifrequency (DTMF) signalling transparency for low-data-rate vocoders

COMSAT CORP9 citations67