Christophe Tournery

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In handsfree tele or video conferencing acoustic echoes arise due to the coupling between the loudspeaker and microphone. Usually an acoustic echo canceler (AEC) is used for eliminating the undesired echoes. The weaknesses of AEC are that it is relatively complex and that it is not robust against non-linearities occurring when using low-end components such(More)
The time delay for each partition is estimated as the slope of the phase difference between left and right channels Φ(k, i) = arg (X1(k, i)X ? 2 (k, i)) . Below the phase wrapping boundary the slope corresponds to phase delays, and to group delays above. Φ̂(k, i) = a1i or Φ̂(k, i) = a1i + a0 The linear regression is done in the weighted least squares sense,(More)
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