Fabii Ehlers Trend Baseline

Cleaner trend signals. Fewer false flips. Five Ehlers filters that separate real moves from market noise. No repaint.

Any pair, any market, any timeframe. 


▬▬▬ THE PROBLEM ▬▬▬

Most moving averages smooth the price. They also smooth the signal. When markets chop, they flip direction repeatedly. When they trend, they lag the move.

The problem is not smoothness. The problem is noise. Random price fluctuations that look like signals but are not. You act on them, the market reverses, and you are on the wrong side.

Fabii Ehlers Trend Baseline uses five digital signal processing filters — techniques originally developed for electrical engineering, adapted by John Ehlers for financial markets — to separate signal from noise before the baseline calculates. The result reacts to real trend changes and ignores the rest.


▬▬▬ HOW IT WORKS ▬▬▬

A DSP filter sits at the centre. Around it, two adaptive deviation bands expand in volatile conditions and tighten during consolidation.

The trend flips bullish when price closes above the upper band. It flips bearish when price closes below the lower band. The baseline and candles change colour. A buy or sell arrow marks the bar.

When price pushes beyond the band in the direction of the active trend, the Momentum Confirmation Zone appears — direction and momentum aligned, visible in one glance.

Everything calculates on the closed bar. The signal does not change after the bar closes.


▬▬▬ FIVE DSP FILTERS ▬▬▬

  • FRAMA (Fractal Adaptive MA) — Measures the fractal dimension of price movement to determine how trending or random the market is. Speeds up in trending conditions, slows down in noise. Each period setting produces a genuinely different baseline — slow at 20, significantly slower at 100.
  • Super Smoother (Ehlers 2-pole) — A two-pole Butterworth filter that removes high-frequency noise while preserving trend direction with minimal lag. Ehlers' own reference filter for trend-following. Clean output, very few false signals in sideways markets.
  • Low-Pass (Ehlers 2-pole) — A Gaussian-style two-pole low-pass filter. Heavier smoothing than Super Smoother for the same period. Useful when you want to track the dominant trend on longer timeframes and can accept slightly more lag.
  • Laguerre Filter — A four-stage recursive filter whose response is controlled by the period setting. Short periods give fast, reactive output. Long periods produce a slow, extremely smooth baseline that only moves on sustained directional pressure.
  • G-Channel (midline) — A fast recursive envelope that tracks the local maximum and minimum simultaneously, outputting their midpoint as the baseline. Adapts instantly to volatility shifts. Less smooth than the other filters but the fastest to respond to a genuine trend change.


▬▬▬ MOMENTUM CONFIRMATION ZONE ▬▬▬

A noise-filtered baseline still needs a confluence check. Direction confirmed by a DSP filter is not the same as momentum backing that direction right now.

When price closes beyond the deviation band in the direction of the active trend, the Momentum Confirmation Zone lights up. The filter shows the trend — the zone shows the push is real. Both on one chart, no second indicator.


▬▬▬ HOW TO USE IT ▬▬▬

  1. Attach the indicator to any chart. Default settings work on most pairs and timeframes.
  2. Select the filter that fits your approach: Super Smoother for general use, FRAMA for adaptive behaviour, G-Channel for the fastest reaction.
  3. Watch the baseline colour. Green — trend is bullish. Red — trend is bearish.
  4. Wait for a buy or sell arrow on bar close. That is the trend flip signal.
  5. When the Momentum Confirmation Zone appears in the same direction, momentum confirms. That is your entry filter.


▬▬▬ KEY FEATURES ▬▬▬

  • Five DSP-filter baselines — FRAMA, Super Smoother, Low-Pass, Laguerre, G-Channel. One selector, same structure for each.
  • Adaptive deviation bands — dotted lines that widen in volatile conditions and tighten in consolidation.
  • Momentum Confirmation Zone — highlights the bars where direction and momentum align. No second indicator needed.
  • Coloured candles — follow the active trend direction at any zoom level.
  • Buy and sell arrows — appear on the bar where the trend flips. Anchored to the deviation band via ATR offset. EA-ready: buffers 19 (Buy) and 20 (Sell) accessible via iCustom.
  • Laguerre period — period setting directly controls the filter response. Short period for fast signals, long period for slow and smooth.
  • Alerts — trend-flip (Long / Short) and band-cross (Risk-On / Risk-Off). Popup, sound and push notification. Fires once per bar on close.
  • Bar limit — display the last N bars only (default 500). Clean chart, unaffected calculation.
  • Any pair, any timeframe, any market.


▬▬▬ INPUTS ▬▬▬

Parameter Description Default
Color bars Colour candles by trend direction true
Show baseline Display the baseline line true
Show deviation bands Display the upper and lower dotted bands true
Show speculation zones Display the Momentum Confirmation Zone true
Price source OHLC source for baseline calculation close
Baseline type FRAMA / Super Smoother / Low-Pass / Laguerre / G-Channel FRAMA
Baseline length Number of bars for the baseline 28
Deviation multiplier Width of the deviation bands 1.0
Laguerre gamma override Manual gamma value — 0 = auto from length 0.0
Show buy/sell arrows Display entry arrows on trend flip true
Buy arrow code Wingdings code for buy arrow 233
Sell arrow code Wingdings code for sell arrow 234
ATR period ATR period for arrow offset 14
Arrow offset (x ATR) Distance between arrow and band 0.5
Alert on trend flip Alert when trend flips Long or Short true
Alert on band cross Alert on Risk-On / Risk-Off band cross false
Alert channel: popup Enable popup alert false
Alert channel: sound Enable sound alert false
Alert channel: push Enable push notification false
Sound file Name of the sound file alert.wav
Limit to N bars Restrict display to the last N bars true
Bars to display Number of bars to display (min 50) 500


▬▬▬ WHY TRUST IT ▬▬▬

Signal calculates on the closed bar only. Once the bar closes, the signal does not change. No repaint.

Compatible with the MetaTrader 5 Strategy Tester. Test it on your own pairs and timeframes before you go live.


▬▬▬ PART OF THE FABII TREND BASELINE SERIES ▬▬▬

This is the Ehlers version — five DSP filters engineered to cut noise.

The series also includes Essential (free, SMA/EMA/SMMA), Responsive (HMA/DEMA/TEMA/T3/ZLEMA), Adaptive (KAMA/VIDYA/ALMA/ADXVMA/OCN NMA) and Universal (all 18 baselines in one).

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▬▬▬ A NOTE ON REVIEWS ▬▬▬

Question or issue? Message me first — I answer within 24 hours and fix fast.

If this saved you time on a few trades, a short review helps other traders find it. Even one line — say which filter and timeframe you use it on.


▬▬▬ GET IT ▬▬▬

30 USD. Instant access. Test it in the Strategy Tester on your own charts first.

I answer within 24 hours.


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