# John Ehlers Toolbox

This is a discussion on John Ehlers Toolbox within the Trading tools forums, part of the Trading Forum category; John Ehlers Discrete Fourier Transform - indicator for MetaTrader 5 Fourier transform applied to charts of currency pairs with the ...

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1. ## John Ehlers Discrete Fourier Transform

John Ehlers Discrete Fourier Transform - indicator for MetaTrader 5

Fourier transform applied to charts of currency pairs with the construction of a spectrogram. By John Ehlers. Description of mathematics by link (eng.): https://www.mesasoftware.com/papers/...ForTraders.pdf

I've a question about the Hilbert Sine Wave indicator.... The Alpha parameter from wich equation would it be obtained? it's the usual 2/( period +1 ) or does it represent a different relation?

i would like to find the optimal Alpha, but first i would like to fully understand it, and how to calculate it

3. Originally Posted by Ghizzo

I've a question about the Hilbert Sine Wave indicator.... The Alpha parameter from wich equation would it be obtained? it's the usual 2/( period +1 ) or does it represent a different relation?

i would like to find the optimal Alpha, but first i would like to fully understand it, and how to calculate it

I have sent this request to Igor for his consideration (I think - he will reply).

4. ## The 2 Pole Butterworth Filter

The 2 Pole Butterworth Filter - indicator for MetaTrader 5

The indicator was created by John Ehlers and described in his book "Cybernetic Analysis For Stocks And Futures", page 192. This is one of its many noise-cutting filters.
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Cybernetic Analysis for Stocks and Futures: Cutting-Edge DSP Technology to Improve Your Trading - post #425

5. ## premium section indicator: AllInverse Fisher Transform with IFT for CMO

AllInverseFisher_v2.1 600+ indicator is on this post (premium section link). This is the updated Inverse Fisher Transform indicator with MTF feature, with level mode for Overbought/Oversold Levels and with the ability to plot the IFT for CMO.

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