Why is Cheby 2 filter uncommon?

1. What is special about Chebyshev filter?
2. Why Chebyshev is better than Butterworth?
3. What is the difference between Chebyshev I and Chebyshev II filters?
4. How does Chebyshev filter work?

What is special about Chebyshev filter?

The primary attribute of Chebyshev filters is their speed, typically more than an order of magnitude faster than the windowed-sinc. This is because they are carried out by recursion rather than convolution. The design of these filters is based on a mathematical technique called the z-transform, discussed in Chapter 33.

Why Chebyshev is better than Butterworth?

Chebyshev type I filter minimizes the height of the maximum ripple. For the same filter order, the stopband attenuation is higher for the Chebyshev filter. Compared to a Butterworth filter, a Chebyshev-I filter can achieve a sharper transition between the passband and the stopband with a lower order filter.

What is the difference between Chebyshev I and Chebyshev II filters?

the type I Chebyshev filter has ripple in the pass band and a flat stop band, type II is the opposite with a flat pass band and ripple in the stop band.

How does Chebyshev filter work?

Chebyshev filters are nothing but analog or digital filters. These filters have a steeper roll off & type-1 filter (more pass band ripple) or type-2 filter (stop band ripple) than Butterworth filters. The property of this filter is, it reduces the error between the characteristic of the actual and idealized filter.