Definitions for "Echo canceller"
Used by the phone company, an echo canceller is an electronic circuit that eliminates echo (or positive feedback) on a phone network and on video conference telephony links.
An electronic circuit which eliminates or attenuates the echo effect on satellite signals.
A circuit feature that turns off the incoming signal while one end of the call is talking (to avoid an annoying long distance echo). It must be disabled for Full Duplex (simultaneous 2-way calls). An echo canceller does not turn off the voice channel, as stated, but electronically removes unwanted echo, while maintaining a full-duplex channel. An echo suppressor disables the channel in one direction or the other, depending on who is talking. Echo cancellers must be disabled for some types of high speed modems calls, and must also be disabled for "clear channel" data calls, such as ISDN. Updated by: Jerry Skene, VP Business Development, Coherent Communications Systems Corp.
a component of a voice gateway that faces the public-switched-telephone network (PSTN) side of the gateway and reduces the level of echoes that have leaked from the transmit (Tx) path into the receive (Rx) path
A unit of hardware and software connected to the audio system, used to reduce the amount of echo 'reflected' back to the site transmitting the audio, and thus ensuring adequate sound quality.
a digital signal processor that continuously monitors the digitized speech going coming from the network (receive direction) and compares it to the signal in the reverse direction
A filter that will remove reflected signals on a transmission line that are caused by impedance mismatches.