发明名称 |
Nonlinear Dimensionality Reduction of Spectrograms |
摘要 |
Embodiments of the invention disclose a system and a method for reducing a dimensionality of a spectrogram matrix. The method constructs an intermediate time basis matrix and an intermediate frequency basis matrix and applies iteratively a non-negative matrix factorization (NMF) to the intermediate time basis matrix and the intermediate frequency basis matrix until a termination condition is reached, wherein the NMF is subject to a constraint on a an independence regularization term, wherein the constraint is in a form of a gradient of the term.
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申请公布号 |
US2011078224(A1) |
申请公布日期 |
2011.03.31 |
申请号 |
US20090571156 |
申请日期 |
2009.09.30 |
申请人 |
WILSON KEVIN W;RAMAKRISHNAN BHIKSHA R |
发明人 |
WILSON KEVIN W.;RAMAKRISHNAN BHIKSHA R. |
分类号 |
G06F17/14;G06F17/16 |
主分类号 |
G06F17/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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