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lib/dynamics/impulse/Impulse.md
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# IMPULSE: Elder Impulse System
# IMPULSE: Elder Impulse System
| Property | Value |
| ---------------- | -------------------------------- |
| **Category** | Dynamic |
| **Inputs** | OHLCV bar (TBar) |
| **Parameters** | `emaPeriod` (default 13), `macdFast` (default 12), `macdSlow` (default 26), `macdSignal` (default 9) |
| **Outputs** | Single series (Impulse) |
| **Output range** | Varies (see docs) |
| **Warmup** | 1 bar |
### TL;DR
- The Elder Impulse System combines a 13-period EMA (trend inertia) with the MACD(12,26,9) histogram (momentum acceleration) to classify each bar as ...
- Parameterized by `emaperiod` (default 13), `macdfast` (default 12), `macdslow` (default 26), `macdsignal` (default 9).
- Output range: Varies (see docs).
- Requires 1 bar of warmup before first valid output (IsHot = true).
- Validated against TA-Lib, Skender, and Tulip reference implementations where available.
> "The Impulse System identifies inflection points where a trend speeds up or slows down." -- Alexander Elder, *Come Into My Trading Room*