TY - GEN
T1 - Direction of arrival estimation in highly reverberant environments using soft time-frequency mask
AU - Tourbabin, Vladimir
AU - Donley, Jacob
AU - Rafaely, Boaz
AU - Mehra, Ravish
N1 - Publisher Copyright: © 2019 IEEE.
PY - 2019/10/1
Y1 - 2019/10/1
N2 - A recent approach to improving the robustness of sound localization in reverberant environments is based on pre-selection of time- frequency pixels that are dominated by direct sound. This approach is equivalent to applying a binary time-frequency mask prior to the localization stage. Although the binary mask approach was shown to be effective, it may not exploit the information available in the captured signal to its full extent. In an attempt to overcome this limitation, it is hereby proposed to employ a soft mask instead of the binary mask. The proposed weighting scheme is based directly on a metric of the direct-to-reverberant sound ratio in each individual time-frequency pixel. Evaluation using simulated reverberant speech recordings indicates substantial improvement in the localization performance when using the proposed soft mask weighting.
AB - A recent approach to improving the robustness of sound localization in reverberant environments is based on pre-selection of time- frequency pixels that are dominated by direct sound. This approach is equivalent to applying a binary time-frequency mask prior to the localization stage. Although the binary mask approach was shown to be effective, it may not exploit the information available in the captured signal to its full extent. In an attempt to overcome this limitation, it is hereby proposed to employ a soft mask instead of the binary mask. The proposed weighting scheme is based directly on a metric of the direct-to-reverberant sound ratio in each individual time-frequency pixel. Evaluation using simulated reverberant speech recordings indicates substantial improvement in the localization performance when using the proposed soft mask weighting.
KW - Direction of arrival estimation
KW - Microphone-array processing
KW - Reverberation
UR - http://www.scopus.com/inward/record.url?scp=85077988486&partnerID=8YFLogxK
U2 - 10.1109/WASPAA.2019.8937233
DO - 10.1109/WASPAA.2019.8937233
M3 - Conference contribution
T3 - IEEE Workshop on Applications of Signal Processing to Audio and Acoustics
SP - 383
EP - 387
BT - 2019 IEEE Workshop on Applications of Signal Processing to Audio and Acoustics, WASPAA 2019
T2 - 2019 IEEE Workshop on Applications of Signal Processing to Audio and Acoustics, WASPAA 2019
Y2 - 20 October 2019 through 23 October 2019
ER -