EasyCalculusca-156

Chebyshev Ripple Factor

Problem

A Chebyshev type I filter with passband ripple Rp decibels has ripple factor epsilon = sqrt(10^(Rp/10) - 1).

Given Rp >= 0, return epsilon. A zero ripple gives epsilon = 0.

Hint

The ripple in decibels converts to a linear amplitude ratio before solving for epsilon.

case 1

in: [1]

expected: 0.5088471399095875

case 2

in: [0]

expected: 0

case 3

in: [3]

expected: 0.9976283451109834

case 4

in: [0.5]

expected: 0.34931140018894796

Starter codePython

def chebyshev_ripple(rp_db):
    # Your code here
    pass

4 test cases · run your code against them in the editor