Z. Liu, A. Subramanya, Z. Zhang, Jasha Droppo, and Alex Acero
Continuing our previous work [1, 2] on using air- and bone-conductive integrated microphones, and in particular on using the direct filtering approach  for speech enhancement in noisy environments, we present in this paper a refined version of the direct filtering algorithm. The new algorithm takes into account explicitly the leakage of background noise into the bone channel. We also present a new algorithm that detects and removes an artifact known as teeth clacks. Experiments show that the addition of the above algorithms improves system performance to a large extent even in highly nonstationary noisy environments.
In Proc. ICASSP
Publisher Institute of Electrical and Electronics Engineers, Inc.
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