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lib/filters/ssf3/Ssf3.md
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# SSF3: Ehlers 3-Pole Super Smoother Filter
# SSF3: Ehlers 3-Pole Super Smoother Filter
| Property | Value |
| ---------------- | -------------------------------- |
| **Category** | Filter |
| **Inputs** | Source (close) |
| **Parameters** | `period` |
| **Outputs** | Single series (Ssf3) |
| **Output range** | Tracks input |
| **Warmup** | `6 * period` bars |
### TL;DR
- The 3-Pole Super Smoother Filter (SSF3) extends Ehlers' Super Smoother concept to third order, providing -60 dB/decade rolloff compared to -40 dB/d...
- Parameterized by `period`.
- Output range: Tracks input.
- Requires `6 * period` bars of warmup before first valid output (IsHot = true).
- Validated against TA-Lib, Skender, and Tulip reference implementations where available.
> "Three poles, one sample. Maximum smoothing, minimum ceremony."