Freeware Listing: 6this

Returns equivalent IIR coefficients for an analog RC filter Usage: [B,A] = RC_FILTER(r, c, fs, type); R is the resistance value (in ohms) C is the capacitance value (in farrads) FS is the digital sample rate (in Hz) type is a character string defining filter type Choices are: 'high' or 'low' This function uses a pre-calculated equation for both of these circuits that only requires the resistance and capacitance value to get a true digital filter equivalent to a basic analog filter. The math behind these equations is based off the basic bilinear transform technique that can be found in many DSP textbooks.

  • Platform: Matlab, Scripts

6this: Freeware | All

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