Acoustic Echo Cancellation

Polycom phones use advanced acoustic echo cancellation (AEC) for handsfree operation using the speakerphone.

The phones significantly reduce echo while permitting natural communication.

You can configure the Acoustic Echo Cancellation (AEC) feature to remove the echo of the local loudspeaker from the local microphone without removing the near-end speech.

The AEC feature includes the following:
  • Talk State Detector: Determines whether the near-end user, far-end user, or both are speaking.
  • Linear Adaptive Filter: Adaptively estimates the loudspeaker-to-microphone echo signal and subtracts that estimate from the microphone signal.
  • Non-linear Processing: Suppresses any echo remaining after the Linear Adaptive Filter.

The phones also support headset echo cancellation.