A Chebyshev Filter is a type of electronic filter used in signal processing to allow certain frequencies to pass while attenuating others. It is characterized by its ripple effect in the passband, which means that the output signal can vary slightly within the desired frequency range. This design allows for a sharper cutoff compared to other filters, such as Butterworth Filters, making it useful in applications where precise frequency selection is important. There are two main types of Chebyshev Filters: Type I, which has ripple only in the passband, and Type II, which has ripple only in the stopband. The choice between these types depends on the specific requirements of the application, such as the desired balance between passband flatness and roll-off steepness.