Bilinear Transformation

FIR lowpass, highpass, bandpass, bandstop filter design

FIR multiple bandpass FIR filter design

FIR window functions

IIR filter frequency transformation

IIR filter frequency transformation design for multiple bandpass IIR filter design

IIR Butterworth, Chebyshev I, Chebyshev II, and elliptic filter design

IIR filter order estimation

Frequency domain least-squares FIR filter design

Frequency and time domain least-squares filter design

Optimal Chebyshev error FIR filter design (Parks-McClellan algorithm)

Optimal Savitsky-Golay FIR filter design

Decimation filter design

Interpolation filter design

Quadrature mirror filter design