Decycler Oscillator indicator is created based on "Decyclers" article by John F. Ehlers in the magazine "Technical Analysis of Stocks & Commodities" (September 2015).
22423 The indicator has three input parameters:
- HP period - high-frequency filter period
- Coefficient - adjustment ratio (for using two or more oscillators)
- Applied price - calculation price
The oscillator eliminates strongly low-frequency components of the Simple Decycler indicator by using the Ehlers Highpass half-period filter and converting the output of the filter into an oscillator.
The oscillator is calculated by counting the ratio of input data of the high-frequency filter to the price and then multiplying by the ratio equal to 1.0 by default

Fig. 1. Decycler Oscillator

Fig. 2. Decycler Oscillator + Simple Decycler