Optimal ratio estimator for multisensor systems

Details Optimal ratio estimator for multisensor systems Optimal ratio estimator for multisensor systems

2005-03-15

2005-03-15

Assouad, Patrick (Department: 2857)

Data processing: measuring, calibrating, or testing

Measurement system

Statistical measurement

C702S177000, C702S179000, C702S183000, C702S197000

Reexamination Certificate

active

06868365

ABSTRACT:
A signal processing technique can be effectively used for source separation, signal enhancement, and noise reduction when using a twin microphone system. The class of stochastic signals for which ratio-estimates can be computed from histograms is defined. This class fits real-world signals of interest such as voice signals. Theoretical computation in closed form of the optimal estimator for this class of signals is disclosed. Two practical implementation solutions are disclosed, as is a practical solution to exploit an echoic environment model. Furthermore, two novel techniques for signal demixing are presented. The application of the optimal estimator and the suboptimal estimator to the case of more than two channels is disclosed.

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