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Filter Design Terms

FIR, IIR, biquad, lattice, polyphase, Parks-McClellan, windowing (Hamming/Hann/Kaiser), filter specification, group delay, linear phase.

9 terms in this category.

A B C F I L P W
A
  • All-Pass Filter An all-pass filter is a filter that passes all frequency components of a signal with (ideally) equal gain while introducing a frequency-depe...
B
  • Biquad Filter A biquad filter is a second-order recursive digital filter described by a transfer function with two poles and two zeros, implemented using ...
C
  • CIC Filter A CIC (Cascaded Integrator-Comb) filter is a computationally efficient multirate filter structure built entirely from adders, subtractors, a...
F
  • FIR Filter A Finite Impulse Response (FIR) filter is a discrete-time digital filter whose output depends only on a finite window of past and present in...
I
  • IIR Filter An IIR (Infinite Impulse Response) filter is a discrete-time filter whose output depends on both current and past input samples and on past ...
L
  • Linear Phase A filter has linear phase if its phase response is a linear function of frequency, meaning all frequency components of a signal are delayed ...
  • Low-Pass Filter A low-pass filter (LPF) is a filter that passes signal components below a defined cutoff frequency while attenuating components above it. It...
P
  • Parks-McClellan Parks-McClellan is an iterative algorithm for designing equiripple (minimax) optimal linear-phase FIR filters by minimizing the maximum weig...
W
  • Window Function A window function is a finite-length weighting sequence applied to a block of time-domain samples before computing a Discrete Fourier Transf...