Table 2.
Relative advantages and disadvantages of digital filters commonly used in neuroscience.
| Filter type |
Filter Name | Transition Width |
Passband ripple |
Stopband performance |
Computational Efficiency |
Phase delay |
|---|---|---|---|---|---|---|
| FIR | Equiripple | ++ | +++ | ++ | ++ | Linear |
| Least-squares | + | ++ | +++ | + | Linear | |
| Windowed sinc: Hamming | ++ | ++ | ++ | + | Linear | |
| Windowed sinc: rectangular | +++ | + | + | + | Linear | |
| Windowed sinc: Kaiser | + | +++ | +++ | + | Linear | |
| IIR | Butterworth | + | ++ | ++ | +++ | Nonlinear |
| Chebyshev I | ++ | + | +++ | +++ | Nonlinear | |
| Chebyshev II | ++ | +++ | + | +++ | Nonlinear | |
| Elliptic | +++ | + | + | +++ | Nonlinear |
+++ = excellent performance; ++ = moderate performance; + = relatively poor performance.