Přesné obvodové prvky s konstantní fází určené pro audio aplikace
| Autor: | Jiri Petrzela |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
passive filter
Frequency response necelistvý řád ladder network Computer science circuit synthesis žebříková struktura Phase (waves) kmitočtová odezva 02 engineering and technology computer.software_genre constant phase element nuly a póly fractional-order 0202 electrical engineering electronic engineering information engineering Electronic engineering General Materials Science pasivní filtr prvek s konstantní fází Audio signal processing Instrumentation audio effect Electronic filter Audio frequency Electronic circuit Fluid Flow and Transfer Processes Signal processing Process Chemistry and Technology admittance function synthesis zeroes and poles 020208 electrical & electronic engineering General Engineering audio efekt 020206 networking & telecommunications Computer Science Applications syntéza admitanční funkce obvodová syntéza 21 fractional-order Frequency domain frequency response computer |
| Zdroj: | Applied Sciences-Basel. 2019, vol. 9, issue 22, p. 1-35. Applied Sciences Volume 9 Issue 22 |
| ISSN: | 2076-3417 |
| DOI: | 10.3390/app9224888 |
| Popis: | This review paper introduces real-valued two-terminal fully passive RC ladder structures of the so-called constant phase elements (CPEs). These lumped electronic circuits can be understood as two-terminal elements described by fractional-order (FO) dynamics, i.e., current&ndash voltage relation described by non-integer-order integration or derivation. Since CPEs that behave almost ideally are still not available as off-the-shelf components, the correct behavior must be approximated in the frequency domain and is valid only in the predefined operational frequency interval. In this study, an audio frequency range starting with 20 Hz and ending with 20 kHz has been chosen. CPEs are designed and values tabularized for predefined phase shifts that are commonly used in practice. If constructed carefully, a maximum phase error less than 0.5° can be achieved. Several examples of direct utilization of designed CPEs in signal processing applications are provided. |
| Databáze: | OpenAIRE |
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