Non-linear Acoustic Echo Cancellation Based on Mel-Frequency Domain Volterra Filtering

This paper proposes an acoustic echo cancellation (AEC) algorithm based on mel-frequency domain Volterra filtering in order to reduce complexity of a conventional Volterra filter. By doing this, the proposed AEC implemented in the mel-frequency domain can work around 8.98 times faster than the conventional one using linear-frequency domain Volterra filtering. Meanwhile, the echo return loss enhancement of the proposed AEC is 9 dB lower than the conventional one under a single talk condition.