A Delay-Based Double-Talk Detector

Robust low-complexity transfer logic for two-path echo cancellation

“…Ensemble averages, together with the maximum and minimum, of the maximum foreground filter misalignment during double-talk for different near-end-to-echo ratios (NER) for the proposed transfer logic. and the delay based double-talk detector in [5], has been proposed. Extensive simulations have shown that the proposed transfer logic is more robust to double-talk than the conventional method, while also exhibiting slightly improved performance during a change of the echo-path.…”

“…Here, the improved deviation measure in [4] is incorporated in a complete two-path transfer logic solution together with the double-talk detector presented in [5]. It is also shown that the deviation measure, as well as the double-talk measure, can be calculated much more efficiently than originally presented.…”

“…(The reader is referred to [5] for more details.) The fourth and final condition of the proposed transfer logic is a straight-forward output error comparison according to σ…”

“…For the double-talk evaluation, a similar setup as in [5] where four different speech signals (two male and two female) of approximately 2 s each were used as near-end speech. The near-end speech was set to occur at four different positions in time within the 12 s far-end speech, yielding a total of 16 simulations.…”

“…filter deviation measure presented in [4] and the delay based double-talk detector presented in [5]. A more efficient way of calculating the delay based measures than in the original papers is also presented.…”