Echo canceller employing dual-H architecture having split adaptive gain settings

摘要

A method for processing filter tap coefficients in an echo canceller comprises adapting high-energy filter tap coefficients and low-energy filter tap coefficients using adjustable gain constants; and separately adapting the high-energy filter tap coefficients from the low-energy filter tap coefficients. There is also disclosed an echo canceller for processing filter tap coefficients, the echo canceller comprising a tap energy detector arranged to adapt high-energy filter tap coefficients and low-energy filter tap coefficients using adjustable gain constants and adapt separately the high-energy filter tap coefficients from the low-energy filter tap coefficients.