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feat(oscillators): add DSO - Ehlers Deviation-Scaled Oscillator

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Implement DSO (TASC Oct 2018) with SSF 2-pole filter, RMS normalization,
and Fisher Transform (±0.99 clamp). Sealed class, O(1) streaming RMS via
RingBuffer, precomputed SSF coefficients.

New files: Dso.cs, Dso.Quantower.cs, Dso.md, dso.pine,
  Dso.Tests.cs (27), Dso.Validation.Tests.cs (7), Dso.Quantower.Tests.cs (11)

Updated: Exports.cs, _bridge.py, oscillators.py, SPEC.md,
  _sidebar.md, lib/_index.md, oscillators/_index.md,
  docs/indicators.md, docs/pinescript.md

All 19,565 tests pass, 0 warnings.
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Miha Kralj
2026-03-17 11:59:04 -07:00
parent 5fc6e27d8e
commit 7db48e2418
16 changed files with 1468 additions and 0 deletions
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lib/_index.md
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@@ -95,6 +95,7 @@
| [DEMA](trends_IIR/dema/Dema.md) | Double Exponential MA | Trends (IIR) |
| [DMX](dynamics/dmx/Dmx.md) | Jurik Directional Movement Index | Dynamics |
| [DOSC](oscillators/dosc/Dosc.md) | Derivative Oscillator | Oscillators |
| [DSO](oscillators/dso/Dso.md) | Ehlers Deviation-Scaled Oscillator | Oscillators |
| [DPO](oscillators/dpo/Dpo.md) | Detrended Price Oscillator | Oscillators |
| [DSTOCH](oscillators/dstoch/Dstoch.md) | Double Stochastic (Bressert) | Oscillators |
| [DSMA](trends_IIR/dsma/Dsma.md) | Deviation-Scaled MA | Trends (IIR) |