US 6,983,264 B2 | ||
Signal separation method and apparatus for restoring original signal from observed data | ||
Junya Shimizu, Yokohama (Japan) | ||
Assigned to International Business Machines Corporation, Armonk, N.Y. (US) | ||
Filed on Oct. 25, 2001, as Appl. No. 10/45,271. | ||
Claims priority of application No. 2001-335122 (JP), filed on Nov. 01, 2000. | ||
Prior Publication US 2002/0136328 A1, Sep. 26, 2002 | ||
Int. Cl. G06F 15/18 (2006.01) |
U.S. Cl. 706—22 | 35 Claims |
1. A signal separation method comprising restoring an original signal from observed data, obtained by observing multiple mixed
signals, including the steps of:
estimating, from said observed data, a separation matrix using an adaptive filter that suppresses the H-infinity norm concerning
said separation matrix until the H-infinity norm is equal to or smaller than a provided scalar value; and
restoring said original signal by multiplying said separation matrix by said observed data.
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