Title:
空間的4次キュムラント行列束を利用したブラインド音源分離
Document Type and Number:
Japanese Patent JP4271041
Kind Code:
B2
Abstract:
Blind source separation (BSS) of statistically independent signals with low signal-to-noise plus interference ratios under a narrowband assumption utilizes cumulants in conjunction with spectral estimation of the signal subspace to perform the blind separation. The BSS technique utilizes a higher-order statistical method, specifically fourth-order cumulants, with the generalized eigen analysis of a matrix-pencil to blindly separate a linear mixture of unknown, statistically independent, stationary narrowband signals at a low signal-to-noise plus interference ratio having the capability to separate signals in spatially and/or temporally correlated Gaussian noise. This BSS provides the ability to blindly separate signals in situations where no second-order technique has been found to perform the blind separation satisfactorily, for example, at a low signal-to-noise ratio when the number of sources equals the number of sensors or when the noise is spatially and temporally colored.
Inventors:
John F, Dishman
Martin, Patrick G
Edward Raymond, Beadle
Martin, Patrick G
Edward Raymond, Beadle
Application Number:
JP2003586801A
Publication Date:
June 03, 2009
Filing Date:
April 14, 2003
Export Citation:
Assignee:
Harris Corporation
International Classes:
G10L21/028; G01S3/74; G06K9/00; G06K9/62; G10L21/0308; H04B1/707; H04K1/00; H04K1/02
Domestic Patent References:
| JP2000242624A |
Other References:
阿久澤利直,”独立成分解析第15回-非ホロノームアルゴリズム再考”,Computer Today,株式会社サイエンス社,2001年1月号,No.101,p.64-72
島村祐一他,”4次キュムラントを用いたMMPによる多重遅延波の遅延時間と到来方向の推定法”,電子情報通信学会論文誌,Vol.J81-B-II,No.4,p.289-296(1998-04)
島村祐一他,”4次キュムラントを用いたMMPによる多重遅延波の遅延時間と到来方向の推定法”,電子情報通信学会論文誌,Vol.J81-B-II,No.4,p.289-296(1998-04)
Attorney, Agent or Firm:
Tadahiko Ito
Shinsuke Onuki
Tadashige Ito
Shinsuke Onuki
Tadashige Ito