Howtosignalprocessing
- Is attenuation and ripple same?
- What is stopband ripple?
- What is a good stopband attenuation?
- Is passband ripple and passband attenuation same?
Is attenuation and ripple same?
the ripple is a certain amount of amplification or attenuation tolerated in the pass band of the filter. So it depends if those effects are critical for your application or not.
What is stopband ripple?
Ripples are the fluctuations (measured in dB) in the pass band, or stop band, of a filter's frequency magnitude response curve. Elliptic and Chebyshev-based filters have constant ripple across their pass bands. While Bessel and Butterworth derived filters have no ripple in their pass band responses.
What is a good stopband attenuation?
Depending on application, the required attenuation within the stopband may typically be a value between 20 and 120 dB higher than the nominal passband attenuation, which often is 0 dB.
Is passband ripple and passband attenuation same?
So the passband ripple is the amount of variation in the amplitude, within the designated passband of the filter, and stop band attenuation is the minimum attenuation level with the designated rejection band of the filter.
