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Figure 2 | BioMedical Engineering OnLine

Figure 2

From: Spectral subtraction denoising preprocessing block to improve P300-based brain-computer interfacing

Figure 2

Illustration of border discontinuity artifact in the old spectral subtraction method and its solution in the new method. (Appear in Methods). Illustration of border discontinuity artifact in the old spectral subtraction method and its solution in the new method. The top plot shows the original signal, the middle plot shows the signal processed with the old spectral subtraction method with a clear artifact at the border in the beginning of the signal. This problem is absent in the new spectral subtraction method at the bottom.

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