Comparison of Analog and Digital Differentiation Techniques

With respect to the quality of spectra, both derivative modes are comparable. This can be seen in Fig. 4-44. Of course, the spectra are not absolutely congruent — this cannot be expected -, because it is not possible for all parameters to be the same when established by different methods and different apparatuses. The main shape is similar. 

Price to performance Filtering and smoothing Distortion asymmetric Amplitude Optimization 

AA-correction (A-shift) Influence of scan velocity Influence of slit width Longtime storage Low-order derivatives Higher-order derivatives 

Simultaneous recording of more than one derivative Quality of derivatives 

Knowledge of computer-technology or given algorithms required 

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