Echo canceller capable of cancelling an echo signal at a high sp

Echo canceller disabler for modulated data signals

Echo canceller disabler for modulated data signals

Echo canceller employing H-register and storage register

Echo canceller for a packet signal

Echo canceller for a variable-phase echo signal

Echo canceller for bidirectional digital transmission

Echo canceller for bidirectional transmission on two-wire subscr

Echo canceller for two-wire full duplex digital data transmissio

Echo canceller having FIR and IIR filters for cancelling long ta

Echo canceller processing techniques and processing

Echo canceller system

Echo canceller system in an ATM network

Echo canceller system suitable for a 2B1Q transmission code

Echo canceller system with shared coefficient memory

Echo canceller touch-up period in an echo-cancelling modem

Echo canceller using delta modulation

Echo canceller using two residual echoes

Echo canceller with means for determining filter coefficients fr

Echo cancelling device capable of coping with deterioration of a