Title:
高度に相関する混合のための強調ブラインド信号源分離アルゴリズム
Document Type and Number:
Japanese Patent JP2011511321
Kind Code:
A
Abstract:
An enhanced blind source separation technique is provided to improve separation of highly correlated signal mixtures. A beamforming algorithm is used to precondition correlated first and second input signals in order to avoid indeterminacy problems typically associated with blind source separation. The beamforming algorithm may apply spatial filters to the first signal and second signal in order to amplify signals from a first direction while attenuating signals from other directions. Such directionality may serve to amplify a desired speech signal in the first signal and attenuate the desired speech signal from the second signal. Blind source separation is then performed on the beamformer output signals to separate the desired speech signal and the ambient noise and reconstruct an estimate of the desired speech signal. To enhance the operation of the beamformer and/or blind source separation, calibration may be performed at one or more stages.
Inventors:
One, Song
Ramakrishnan, Dinesh
Gupta, Samia Kumar
Choi, Eddie L. Tea.
Ramakrishnan, Dinesh
Gupta, Samia Kumar
Choi, Eddie L. Tea.
Application Number:
JP2010545157A
Publication Date:
April 07, 2011
Filing Date:
January 29, 2009
Export Citation:
Assignee:
QUALCOMM INCORPORATED
International Classes:
G10L21/02; H04R1/40; H04R3/00
Foreign References:
| WO2006077745A1 | 2006-07-27 |
Other References:
JPN5011008859; ＰＡＮ ＱＩＯＮＧＦＥＮＧ: 'ＣＯＭＢＩＮＥＤ ＳＰＡＴＩＡＬ／ＢＥＡＭＦＯＲＭＩＮＧ ＡＮＤ ＴＩＭＥ／ＦＲＥＱＵＥＮＣＹ ＰＲＯＣＥＳＳＩＮＧ ＦＯＲ ＢＬＩＮＤ ＳＯＵＲＣＥ ＳＥＰＡＲＡＴＩＯＮ' １３．ＥＵＲＯＰＥＡＮ ＳＩＧＮＡＬ ＰＲＯＣＥＳＳＩＮＧ ＣＯＮＦＥＲＥＮＣＥ［ＯＮＬＩＮＥ］ , 20050908
Attorney, Agent or Firm:
Kurata Masatoshi
Satoshi Kono
Makoto Nakamura
Yoshihiro Fukuhara
Takashi Mine
Toshio Shirane
Sadao Muramatsu
Nobuhisa Nogawa
Kocho Chojiro
Naoki Kono
Katsu Sunagawa
Katsumura Hiro
Tatsushi Sato
Takashi Okada
Mihoko Horiuchi
Takenori Masanori
Takuzo Ichihara
Yamashita Gen
Satoshi Kono
Makoto Nakamura
Yoshihiro Fukuhara
Takashi Mine
Toshio Shirane
Sadao Muramatsu
Nobuhisa Nogawa
Kocho Chojiro
Naoki Kono
Katsu Sunagawa
Katsumura Hiro
Tatsushi Sato
Takashi Okada
Mihoko Horiuchi
Takenori Masanori
Takuzo Ichihara
Yamashita Gen