Decay

A first order lowpass filter than can be used as a diode detector as well.

Pins

io	letter	name	unit	description
in	X	input	auto	input signal
	D	decay rate	seconds	RC time constant
out	=		auto	filtered input signal

Parameters

name	option	key	description
mode	above	a	when to accumulate the input signal
	below	b
	both	o

Notes

The decay filter is identical to an RC circuit in electronics. An optional diode may be placed before the input resistor. In above mode, if the input signal is above the output value, the output value will rise. Otherwise it will fall twords zero. Below mode is the opposite. Both mode removes the diode from the circuit, causing the output to always follow the input. If D is not connected, a default value of 0.01 is used. Negative values of D are converted to positive values.