Level: 2
Background
John F. Ehlers introuced Zero Crossings Period Measurer in his "Cycle Analytics for Traders" chapter 5 on 2004.
Function
The band-pass filter can be used as a relatively simple measurement of the dominant cycle. A cycle is complete when the waveform crosses zero two times from the last zero crossing. Therefore, each successive zero...
![ETHUSD: [blackcat] L2 Ehlers Zero Crossings Period Measurer](https://s3.tradingview.com/l/lIco4pvI_mid.png "[blackcat] L2 Ehlers Zero Crossings Period Measurer")
