@ARTICLE{Borys_Andrzej_Another_2022, author={Borys, Andrzej}, volume={vol. 68}, number={No 1}, journal={International Journal of Electronics and Telecommunications}, pages={115-122}, howpublished={online}, year={2022}, publisher={Polish Academy of Sciences Committee of Electronics and Telecommunications}, abstract={In this paper, a new proof of ambiguity of the formula describing the aliasing and folding effects in spectra of sampled signals is presented. It uses the model of non-ideal sampling operation published by Vetterli et al. Here, their model is modified and its black-box equivalent form is achieved. It is shown that this modified model delivers the same output sequences but of different spectral properties. Finally, a remark on two possible understandings of the operation of non-ideal sampling is enclosed as well as fundamental errors that are made in perception and description of sampled signals are considered.}, type={Article}, title={Another Proof of Ambiguity of the Formula Describing Aliasing and Folding Effects in Spectrum of Sampled Signal}, URL={http://ochroma.man.poznan.pl/Content/122811/PDF/17-3594-Borys_sk_new.pdf}, doi={10.24425/ijet.2022.139858}, keywords={signal sampling, occurrence of spectrum aliasing and folding, modelling of non-ideal signal sampling operation, Vetterli’s model}, }