Advantage is that it has the most flat passband meaning that it is very good at simulating the passband of an ideal filter.
The disadvantage is that it has a horrible stopband because it gradually goes to zero so some parts of the stopband are still passed. However, for an nth-order Butterworth Filter, as n increases, the closer it is to an ideal filter. However, it is highly impractical to build a ridiculously high order Butterworth filter.
Advantages are getting a steeper decline in the band. Disadvantages are having more distortion in the wavelength frequency available.
in text form
Butterworth filter
advantages: 1. It has a sharp cut-off and narrow transition width. 2. The frequency response specifications can be satisfied by a lower order filter. 3. Due to presence of zeroes unlike butterworth, chebyshev, it can effectively notch out frequencies. disadvantages: 1. It has ripples both in passband as well as stopband. 2. It has a highly non-linear phase response in passband especially near band-edge. 3. Design and implementation is complicated.
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The Butterworth Filter is a signal processing filter that is very renowned for things such as being able to solve "Impossible" math equations and doing things that would normally trouble a human.
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