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Time invariant noise contributions in the absorbance experiment (A) and the intensity experiment (B) shown in Figure 7.13.3. For clarity, the intensity-derived time-invariant noise vector is transposed by −0.2 absorbance units. While the amplitude for the low frequency noise is larger in the intensity measurement, the amplitude of the high frequency noise from the absorbance measurement is larger due to the convolution of the two noise vectors, one from each channel.
