Efficient non-intrusive divergence detection techniques in an in-service non-intrusive measurement device

摘要

Efficient non-intrusive techniques that minimise divergence and enable optimal echo path modelling of noise-impaired speech telephony circuits are proposed. Original simulation results show a modelling misadjustment improvement of 28 dB at an echo-to-noise ratio of 0 dB over 1 s adaptation using conventional real-time least-mean-square digital adaptive filter systems.