Temat: non-Ideal signal - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Another Proof of Ambiguity of the Formula Describing Aliasing and Folding Effects in Spectrum of Sampled Signal
Autorzy:: Borys, Andrzej
Powiązania:: https://bibliotekanauki.pl/articles/2055252.pdf
Data publikacji:: 2022
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: signal sampling
occurrence of spectrum aliasing and folding
modelling of non-ideal signal sampling operation
Vetterli's model
Opis:: 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.
Źródło:: International Journal of Electronics and Telecommunications; 2022, 68, 1; 115--122
2300-1933
Pojawia się w:: International Journal of Electronics and Telecommunications
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Extended Definitions of Spectrum of a Sampled Signal
Autorzy:: Borys, Andrzej
Powiązania:: https://bibliotekanauki.pl/articles/1844508.pdf
Data publikacji:: 2021
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: spectrum of sample signal
ideal versus non-ideal sampling
modelling of signal sampling process
Opis:: It is shown that a number of equivalent choices for the calculation of the spectrum of a sampled signal are possible. Two such choices are presented in this paper. It is illustrated that the proposed calculations are more physically relevant than the definition currently in use.
Źródło:: International Journal of Electronics and Telecommunications; 2021, 67, 3; 395-401
2300-1933
Pojawia się w:: International Journal of Electronics and Telecommunications
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: On modelling and description of the output signal of a sampling device
Autorzy:: Borys, Andrzej
Powiązania:: https://bibliotekanauki.pl/articles/2202544.pdf
Data publikacji:: 2023
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: signal sampling
modelling
ideal or non-ideal sampling
averaging operator
Dirac and Kronecker deltas
Opis:: The problem of an inconsistent description of an “interface” between the A/D converter and the digital signal processor that implements, for example, a digital filtering (described by a difference equation) – when a sequence of some hypothetical weighted Dirac deltas occurs at its input, instead of a sequence of numbers – is addressed in this paper. Digital signal processors work on numbers, and there is no “interface” element that converts Dirac deltas into numbers. The output of the A/D converter is directly connected to the input of the signal processor. Hence, a clear conclusion must follow that sampling devices do not generate Dirac deltas. Not the other way around. Furthermore, this fact has far-reaching implications in the spectral analysis of discrete signals, as discussed in other works referred to in this paper.
Źródło:: Archives of Electrical Engineering; 2023, 72, 1; 147--155
1427-4221
2300-2506
Pojawia się w:: Archives of Electrical Engineering
Dostawca treści:: Biblioteka Nauki

Artykuł

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