Filter Structures

  • Dietrich Schlichthärle


Digital filter algorithms are usually represented in form of block diagrams and flowgraphs. Both representations are based on the following three basic elements:
  • Addition of two signal sequences

  • Multiplication of a sequence by a constant

  • Delay of a sequence by one sample period T

The last-mentioned function corresponds to the operation of a D flip-flop in digital systems. Triggered by the rising or falling edge of the applied clock signal, the information at the input is stored and passed to the output. This leads to the situation that we find a sample value at the output of the delay element that was applied to the input during the previous clock period. Shift-register structures, in which sample sequences can be stored and shifted, are realised by serial arrangement of the named delay elements.


Transfer Function Group Delay Wave Parameter Filter Structure Delay Element 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • Dietrich Schlichthärle
    • 1
  1. 1.Tenovis GmbH 6 Co KGFrankfurt/MainGermany

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