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

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.
This commit is contained in:
Miha Kralj
2026-03-17 11:59:04 -07:00
parent 5fc6e27d8e
commit 7db48e2418
16 changed files with 1468 additions and 0 deletions
+1
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@@ -138,6 +138,7 @@
* [DECO - Ehlers Decycler Oscillator](/lib/oscillators/deco/Deco.md)
* [DEM - DeMarker Oscillator](/lib/oscillators/dem/Dem.md)
* [DOSC - Derivative Oscillator](/lib/oscillators/dosc/Dosc.md)
* [DSO - Ehlers Deviation-Scaled Oscillator](/lib/oscillators/dso/Dso.md)
* [DPO - Detrended Price Oscillator](/lib/oscillators/dpo/Dpo.md)
* [DSTOCH - Double Stochastic (Bressert)](/lib/oscillators/dstoch/Dstoch.md)
* [DYMI - Dynamic Momentum Index](/lib/oscillators/dymi/dymi.md)