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Digital filters with embossed amplitude-frequency characteristics

Keywords:

A.I. Tyazhev – Dr. Sc. (Eng.), Professor, Department of Radio Broadcasting and Television, Volga State University of Telecommunications and Informatics (Samara). E-mail: tyagev@psati.ru


In the article the analytical expressions for the calculation of non-recursive digital filter with relief amplitude-frequency characteristics. Non-recursive digital filter-tions (NTSF) have a linear phase response (PFC) and thus can be of any relief amplitude-frequency charac-teristic (AFC) in the band of pro-blowing. Due to this quality digital filters with a relief response may simul- Menno-filter noise from the signal and eliminate the amplitude-frequency signal distortions arising from the flatness of communication channels. In this paper anali-cal expressions for calculating the coefficients NTSF with relief response to four types: low pass filter (LPF), a high pass filter (HPF), band-pass filter (PF) and notch filter (RF). The basis of the formulas on the method of obtaining the smallest quad-Ratov (MNCs). The coefficients NTSF symmetric with respect to the central co-coefficient, which ensures linear phase. The resulting article formula for calculating the coefficients NTSF can be useful to developers of digital-signal processing howling.
References:

 

  1. Ivanova V.G., Tjazhev A.I. Cifrovaja obrabotka signalov i signalnye processory. Samara. 2008. 264 s.
  2. Eliseev S.N., Tjazhev A.I. Analogovye i cifrovye filtry CHebysheva 1-go i 2-go roda // Vestnik SONIIR. 2008. № 1. S. 65−69.

 

June 24, 2020
May 29, 2020

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