Downsides of higher order filtfilt's

1. Are higher order filters better?
2. What happens when filter order is increased?
3. Why do we go for higher order filters?
4. What happens when you increase the order of a Butterworth filter?

Are higher order filters better?

High-order filters are used because they have the ability to roll off gain after the bandwidth at a sharper rate than low-order filters. The attenuation of a filter above the bandwidth grows proportionally to the number of poles. When rapid attenuation is required, higher-order filters are often employed.

What happens when filter order is increased?

The higher the order of a filter, the faster its rolloff rate is. The order of a filter is given as an integer value and is derived from the filter's transfer function.

Why do we go for higher order filters?

Higher order filters provided greater roll off rates between pass band and stop band. They are also necessary to achieve required levels of attenuation or sharpness of cutoff.

What happens when you increase the order of a Butterworth filter?

If you increase the order of the filter, the rate of a roll-off period is also increased. And for second-order, it is -40 dB/decade. The quality factor for the Butterworth filter is 0.707.