📅 Fri, Mar 31, 2017 ⏲️ ~ 1 minutes

Arduino Single EMA Library for Low Pass and High Pass Filter

The Single EMA Filter library implements an exponential filter. The library allows for low pass and high pass filtering. The Single EMA Filter class uses templates to allow it to work with different types (int, long, float, …).

For more information, see the entry Exponential Low Pass and High Pass Filter (EMA) in Arduino.

User Manual

Constructor

The Single EMA filter is instantiated through its constructor, which takes the Alpha parameter of the filter as the only value.

SingleEMAFilter<int> singleEMAFilter(const size_t alpha);

Using the Filter

// Add a new value to the filter and return the Low Pass filtered value
singleEMAFilter.AddValue(value);

// Get the last Low Pass filtered value (the same as the one returned when adding the value to the filter)
singleEMAFilter.GetLowPass();

// Get the last High Pass filtered value
singleEMAFilter.GetHighPass();