stopband ripple การใช้

• Elliptic filters are generally specified by requiring a particular value for the passband ripple, stopband ripple and the sharpness of the cutoff.
• This results in a filter which is maximally insensitive to component variations, but the ability to independently specify the passband and stopband ripples will be lost.
• Alternatively, one may give up the ability to adjust independently the passband and stopband ripple, and instead design a filter which is maximally insensitive to component variations.