OPEN-SOURCE SCRIPT

Band-Pass Filter

Just a clean script that can be applied on top of other indicators/sources or you can take the function out of the source and use it in other scripts.

The idea for this was taken from https://www.pinecoders.com/techniques/dsp/#fir-band-pass-filters-design except I am utilizing an EMA instead of SMA. Simply put, we are combining a low-pass filter (moving average) with a high-pass filter (smoothed difference between the source and moving average). The result is a filter/moving average that provides a great combination of minimizing noise while still reacting strongly to price and trend changes.

I like to use this filter in place of other MAs in Pine Scripts to smooth my data. So instead of doing something like sma(stochastic,5) I can easily plug in bp(stochastic,5). It works just fine for your primary moving averages against price as well.
Exponential Moving Average (EMA)filtersmooth

Open-source script

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 publication is governed by House rules. You can favorite it to use it on a chart.

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