Acoustic echo cancellation is important for audio teleconferencing when concurrent communication (or full-duplex transmission) of speech is necessary…
In acoustic echo cancellation, a measured microphone signal d(n) contains two signals:
- the near-end speech signal
- the far-end echoed speech signal
The main goal is to remove the far-end echoed speech signal from the microphone signal so that only the near-end speech signal gets transmitted.