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The necessities in Filter Theory

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Background

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Bode plot

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See swarthmore

OP Amp

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Overview (pdf)

See Hyperphysics

Analog Filter Analysis (Continuous Time)

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First Order Filters

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Second Order Filters

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Digital Filter Analysis (Discrete Time)

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Sample Processing Methods

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  • Tapped Delays (A.pdf)
  • Programming Considerations
  • Circular Buffers

FIR Filter Realizations

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  • Direct Form FIR Filter
  • Canonical Form FIR Filter
  • Cascade Form FIR Filter

IIR Filter Realizations

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  • Direct Form IIR Filter (A.pdf)
  • Canonical Form IIR Filter
  • Cascade Form IIR Filter


FIR (Finite Impulse Response) Filters

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  • Block Processing Methods
  • Sample Processing Methods
  • Window Method
  • Kaiser Window
  • Frequency Sampling Method


IIR (Infinite Impulse Response) Filters

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  • Bilinear Transform
  • 1st Order Lowpass and Highpass Filters
  • 2nd Order Lowpass and Highpass Filters
  • Parametric Equalizer Filters
  • Comb Filters
  • High Order Filters



Example Octave Codes for Digital Filters

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Octave Functions for Filters

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  • Octave Functions for Filters (A.pdf)




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