TypHo22/Exponential-Filter
The simplest filter is the exponential filter. It is a low-pass filter. ntended to pass low frequencies and dampen high frequencies. There is only one tuning parameter the filterconstant fC. It requires the storage of only one variable - the previous output. It is an IIR filter (autoregressive) - the effects of an input change decay exponentially until the limits of displays or computer arithmetic hide it.
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