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 suitable for a 2B1Q transmission code

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

Echo cancelling device for data transmission over two-wire lines

Echo cancelling device providing adjustment of the echo cancelle

Echo cancelling device with frequency sub-band filtering

Echo cancelling device with phase-roll correction

Echo cancelling method and apparatus using fast projection schem

Echo path transition detection

Echo reduction circuit

Echo suppression arrangement for an adaptive speakerphone

Echo suppressor with adaptive digital filter for transmission sy

Economical payload stream routing in a multiple-ring network

Efficient arbitration within point-to-point ringlet-based comput