Application of a microcomputer for the cross-spectral analysis with pseudorandom signal in electroanalytical chemistry

A digital memory device and a microcomputer are introduced to calculate correlation functions and Fourier transform in voltammetric measurements. Typical cross-spectra for simple diffusion and kinetic processes are obtained. The fast Fourier transform (FFT) modified for microcomputers was used for speed-up of the calculation. The cross-spectra obtained gave information about the electrode process such as the pattern of the accompanied chemical reaction and the kinetic parameter of the chemical reaction.