stop band ripples vs stop band attenuation?

What is difference between stop band ripples and stop band attenuation?Please show/explain with matlab plot

Answer 1

[Star Strider]

For all intents and purposes, they are the same thing. In filters with stopband ripples, that parameter sets the stopband attenuation as well as the magnitude of ths stopband ripples. For other filers (e.g. Butterworth), it only specifies the stopband attenuation.