Air and Bone Conductive Integrated Microphones for Robust Speech Detection and Enhancement
- Y. Zheng ,
- Zicheng Liu ,
- Zhengyou Zhang ,
- Mike Sinclair ,
- Jasha Droppo ,
- Li Deng ,
- Alex Acero ,
- Xuedong Huang
Proceedings IEEE Workshop on Automatic Speech Recognition and Understanding |
Published by Institute of Electrical and Electronics Engineers, Inc.
We present a novel hardware device that combines a regular microphone with a bone-conductive microphone. The device looks like a regular headset and it can be plugged into any machine with a USB port. The bone-conductive microphone has an interesting property: it is insensitive to ambient noise and captures the low frequency portion of the speech signals. Thanks to the signals from the bone-conductive microphone, we are able to detect very robustly whether the speaker is talking, eliminating more than 90% of background speech. Furthermore, by combining both channels, we are able to significantly remove background speech even when the background speaker speaks at the same time as the speaker wearing the headset.
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