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2. Extraction of a signal embedded in noise
This is the most classic and well-known aspect of signal processing. The overall signal to be processed e (t ) is the sum of the useful signal x (t ) and the noise b (t ) :
One of the essential parameters of the problem is the signal-to-noise ratio ρ
e
, which is the quotient of the powers of these two components:
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Extraction of a signal embedded in noise
Determining signal characteristics
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