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Figure 2
(a) With strong signal filtering (e.g. using a Butterworth filter), the EXAFS region is denoised well at the expense of smoothing out the sharp pre-edge peak. (b) By reducing the denoising strength, the pre-edge peak sharpness is maintained while the EXAFS region remains noisy. (c) By using interpolation-based data warping, not only is the noise in the EXAFS region highly suppressed but the sharp pre-edge features in the XANES region are also maintained.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 33| Part 3| May 2026| Pages 658-682
https://doi.org/10.1107/S1600577526001712
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