An Implementation of Digital Crossover Network by using Perfect Linear Phase IIR Filters

  • Kanna, C. (Information Dept., Faculty of Engineering, King Mongkut's Institute of Technology Ladkrabang) ;
  • Sookcharoenphol, D. (Information Dept., Faculty of Engineering, King Mongkut's Institute of Technology Ladkrabang) ;
  • Janjitrapongvej, K. (Information Dept., Faculty of Engineering, King Mongkut's Institute of Technology Ladkrabang)
  • Published : 2003.10.22

Abstract

In this paper, the implementation technique of digital crossover network using perfect linear phase IIR filters is presented. This system has various advantages which cannot be obtained from analog crossover network such as linear phase response, flat group delay and sharp cut-off at low-order over audio frequency band. The simulation results show that the group delay response is maximally flat and twice more attenuation in stop-band than the prototype elliptic IIR filter at all desired frequency.

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