A Spectral Slit Approach to Doubletalk Detection

作者：Low Siow Yong^*; Venkatesh Svetha; Nordholm Sven

来源：IEEE Transactions on Audio Speech and Language Processing, 2012, 20(3): 1074-1080.

DOI：10.1109/TASL.2011.2168210

• Acoustic echo cancellation (AEC)
• doubletalk detector
• spectral slit

A new class of doubletalk detector based on exploiting a spectral slit is proposed. This is achieved by spectrally deleting a frequency band in the far-end signal such that when the near-end signal is present, only the near-end spectral information is present. The proposed method relies solely on the detection of speech activity period in the slit area, and significantly, it requires no estimation of the echo path. Evaluation in typical acoustic echo setups shows that the proposed method outperforms other conventional doubletalk detectors in terms of probability of miss detection even under poor echo-to-noise ratio (ENR), low echo-to-far-end ratio (EFR) conditions, and echo path change.

• 出版日期2012-3