94 GHz Millimeter Wave Conducted Speech Enhancement
نویسندگان
چکیده
منابع مشابه
A 94-GHz Millimeter-Wave Sensor for Speech Signal Acquisition
High frequency millimeter-wave (MMW) radar-like sensors enable the detection of speech signals. This novel non-acoustic speech detection method has some special advantages not offered by traditional microphones, such as preventing strong-acoustic interference, high directional sensitivity with penetration, and long detection distance. A 94-GHz MMW radar sensor was employed in this study to test...
متن کاملA Novel Method for Speech Acquisition and Enhancement by 94 GHz Millimeter-Wave Sensor
In order to improve the speech acquisition ability of a non-contact method, a 94 GHz millimeter wave (MMW) radar sensor was employed to detect speech signals. This novel non-contact speech acquisition method was shown to have high directional sensitivity, and to be immune to strong acoustical disturbance. However, MMW radar speech is often degraded by combined sources of noise, which mainly inc...
متن کاملThe Application of Nonlinear Spectral Subtraction Method on Millimeter Wave Conducted Speech Enhancement
A nonlinear multiband spectral subtraction method is investigated in this study to reduce the colored electronic noise in millimeter wave MMW radar conducted speech. Because the oversubtraction factor of each Bark frequency band can be adaptively adjusted, the nonuniform effects of colored noise in the spectrum of the MMW radar speech can be taken into account in the enhancement process. Both t...
متن کاملTapered Slot Antennas with MMIC for 94 GHz Band Passive Millimeter-wave Imager
M. Sato, T. Hirose, H. Kobayashi, H. Sato, K. Sawaya and K. Mizuno 1 Device Development Div., Fujitsu Ltd. 10-1, Morinosato-Wakamiya, Atsugi, Kanagawa, Japan E-mail: [email protected] 2 Integrated Sensing systems Dept., Fujitsu Ltd. 1-1-1, Kamikodanaka, Nakaharaku, Kawasaki, 211-8588, Japan 3 Graduate School of Electrical Communication, Tohoku University Aza-Aoba 05, Aramaki, Aobaku, S...
متن کاملAdvanced MMIC Receiver for 94-GHz Band Passive Millimeter-Wave Imager
In this paper, we present the development of an advanced MMIC receiver for a 94-GHz band passive millimeter-wave (PMMW) imager. Our configuration is based on a Dicke receiver in order to reduce fluctuations in the detected voltage. By introducing an electronic switch in the MMIC, we achieved a high resolution millimeter-wave image in a shorter image collection time compared to that with a conve...
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ژورنال
عنوان ژورنال: TELKOMNIKA (Telecommunication Computing Electronics and Control)
سال: 2017
ISSN: 2302-9293,1693-6930
DOI: 10.12928/telkomnika.v15i3.5166