Detail publikace

Accurate constant phase elements dedicated for audio signal processing

PETRŽELA, J.

Originální název

Accurate constant phase elements dedicated for audio signal processing

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

This review paper introduces real-valued two-terminal fully passive RC ladder structures of the so-called constant phase elements (CPE). These lumped electronic circuits can be understood as two-terminal elements described by fractional-order (FO) dynamic, i.e. current-voltage relation described by non-integer-order integration or derivation. Since CPE that behaves close to ideal is still not off-the-shelf component, correct behavior must be approximated in the frequency domain and is valid only in the predefined operational frequency interval. In this study, 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, maximum phase error less than 0.5° can be achieved. Several examples of direct utilization of designed CPEs in signal processing applications are provided.

Klíčová slova

admittance function synthesis; audio effect; circuit synthesis; constant phase element; 21 fractional-order; frequency response; ladder network; passive filter; zeroes and poles

Autoři

PETRŽELA, J.

Vydáno

15. 11. 2019

Nakladatel

MDPI

Místo

Basel (Switzerland)

ISSN

2076-3417

Periodikum

Applied Sciences - Basel

Ročník

9

Číslo

22

Stát

Švýcarská konfederace

Strany od

1

Strany do

35

Strany počet

35

URL

https://www.mdpi.com/2076-3417/9/22/4888

Plný text v Digitální knihovně

http://hdl.handle.net/11012/184116

BibTex

@article{BUT159900,
  author="Jiří {Petržela}",
  title="Accurate constant phase elements dedicated for audio signal processing",
  journal="Applied Sciences - Basel",
  year="2019",
  volume="9",
  number="22",
  pages="1--35",
  doi="10.3390/app9224888",
  issn="2076-3417",
  url="https://www.mdpi.com/2076-3417/9/22/4888"
}