Application of unorthodox stimuli in computer measurement: dielectric relaxation as an example

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Abstract
The use of stimuli in computer-aided measurement which would not be available in classical techniques is discussed. In particular the problem that ideal filters are non-causal can be evaded by the generation of wholly band-limited functions in a computer. Because the consequent waveforms tend to be slowly converging, a special type of signal generator with a compact form of data storage is required. These principles are applied to the measurement of low frequency relaxation and illustrative results for an RC model and the polymer PMMA are presented.

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