Separation system for non-stationary sources

Details Separation system for non-stationary sources Separation system for non-stationary sources

1998-02-05

1999-12-07

Mai, Tan V.

Electrical computers: arithmetic processing and calculating

Electrical digital calculating computer

Particular function performed

708300, G06F 1710

Patent

active

05999956&

ABSTRACT:
A source separation system (10) processes input signals formed by mixtures of primary signals originating from sources and estimates the primary signals so that the estimates do not differ even in the presence of non-stationary input signals. The system includes a first separation sub-assembly (12) which produces first estimates of the primary signals, a second sub-assembly (14) which adaptively determines the separation coefficients, and a third sub-assembly (15) which standardizes the first estimates and produces first standardized estimates used for the calculation of the separation coefficients. An output module (17) produces estimates which have between them the same proportionality ratio as that existing between the primary signals. A selection module (19) avoids an estimate being duplicated on various outputs in the case where certain primary signals are absent or very weak.

REFERENCES:
patent: 3696203 (1972-10-01), Leonard
patent: 5293405 (1994-03-01), Gersbach et al.
patent: 5652541 (1997-07-01), Yang et al.
Multi-layer Neural Networks WIth A Local Adaptive Learning Rule Ror Blind Separation of Source Signals, by A. Cichocki, W. Kasprzak, S. Amari, International Symposium on Nonlinear Theory And Its Applications (NOLTA '95) Las Vegas, Dec. 10-14, 1995, 1Ce-5, pp. 61 to 65.

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