The third-order super smoother low-pass butterworth filter (3 pole) is a classic J.F indicator.
I have found many places where the algorithms are not uniform and some are even wrong. So, I did some research and wrote a low pass filter that I think is correctly defined. This indicator is often used as one of the basic elements of other trading systems.
When you are using it, you need to enter the Period setting period.
Free but Open Source
Note: USDT_TRC20 deposits sent from decentralized exchanges are not yet supported.
In true TradingView spirit, the author of this script has published it open-source, so traders can understand and verify it. Cheers to the author! You may use it for free, but reuse of this code in a publication is governed by House Rules. You can favorite it to use it on a chart.