منابع مشابه
Towards Online Maximum Kurtosis Beamforming
In prior work, the current authors investigated the use of optimization criteria for beamforming that exploit the non-Gaussianity of human speech. In particular, we examined beamforming algorithms designed to maximize the kurtosis or negentropy of the subband output of a generalized sidelobe canceller. These techniques, while effective, require making multiple passes through the data, and hence...
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The early fault characteristics of rolling element bearings carried by vibration signals are quite weak because the signals are generally masked by heavy background noise. To extract the weak fault characteristics of bearings from the signals, an improved spectral kurtosis (SK) method is proposed based on maximum correlated kurtosis deconvolution (MCKD). The proposed method combines the ability...
متن کاملKurtosis and the Phase Structure of Images
Many studies have shown that natural imagery exhibit certain statistical regularities such as scale invariance and non-Gaussian behavior. In particular, it has been shown that the marginal statistics (histograms) of filtered images have distributions with large kurtosis. Furthermore, the joint statistics of two or more filter responses are non-Gaussian often with circular and “diamond” shaped d...
متن کاملMaximum kurtosis beamforming with the generalized sidelobe canceller
This paper presents an adaptive beamforming application based on the capture of far-field speech data from a real single speaker in a real meeting room. After the position of a speaker is estimated by a speaker tracking system, we construct a subbanddomain beamformer in generalized sidelobe canceller (GSC) configuration. In contrast to conventional practice, we then optimize the active weight v...
متن کاملBlind Dereverberation using Maximum Kurtosis of the Speech Residual
Reverberation in speech, caused by room reflections, is problematic specially for hands-free telephonic applications in a confined space. The problem is even severe for hearing impaired people. Therefore blind speech dereverberation is an important research area. The task is to remove reverberation from the output of a room, where the room impulse response, as well as the clean speech signal is...
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ژورنال
عنوان ژورنال: Geophysical Journal International
سال: 1988
ISSN: 0956-540X,1365-246X
DOI: 10.1111/j.1365-246x.1988.tb00475.x