-The blue trace represents the input signal, the green trace represents the peak envelope follower, and the red trace represents the peaks: the output of the peak processor. The peak envelope follower follows the input signal when the signal is rising and decays slowly when the signal is falling. An attenuated version of this envelope serves as the reference input to a xref:reference/misc/schmitt_trigger.adoc[Schmitt Trigger]. The attenuation is controlled by the processor's sensitivity parameter: a positive fraction less than one. Higher values indicate higher sensitivity. The signal is compared to this reference and the output is high when the signal is greater than the envelope, plus or minus some hysteresis.
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