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Exponential-Filter provides an exponential filter to smooth a "noisy" input data value.

License: MIT License

C++ 100.00%

exponential exponential-filter exponential-smoothing arduino low-pass-filter lpf schmitt-trigger

exponential-filter's Introduction

Exponential-Filter Library for Arduino

Arduino Exponential-Filter provides an exponential filter to smooth a "noisy" input data value.

OUTPUT[t] = OUTPUT[t-1] + α(INPUT[t] - OUTPUT[t-1])
         += α(INPUT[t] - OUTPUT[t-1])

Where:
α   = ∆t/ (RC + ∆t)

When:
τ = RC [seconds]
  = 1 / 2πƒ

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