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docs/ai/Common/DTS.Common/Enums/DTS.Viewer/Reports/PowerSpectralDensity.md

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+---
+source_files:
+  - Common/DTS.Common/Enums/DTS.Viewer/Reports/PowerSpectralDensity/WindowAveragingType.cs
+  - Common/DTS.Common/Enums/DTS.Viewer/Reports/PowerSpectralDensity/PassFilterType.cs
+  - Common/DTS.Common/Enums/DTS.Viewer/Reports/PowerSpectralDensity/WindowWidth.cs
+  - Common/DTS.Common/Enums/DTS.Viewer/Reports/PowerSpectralDensity/WindowType.cs
+generated_at: "2026-04-17T16:35:07.692917+00:00"
+model: "zai-org/GLM-5-FP8"
+schema_version: 1
+sha256: "cbf2ecb747cdc1d7"
+---
+
+# Documentation: Power Spectral Density Enums
+
+## 1. Purpose
+
+This module defines four enumeration types used to configure Power Spectral Density (PSD) report generation within the DTS Viewer application. These enums provide strongly-typed configuration options for window functions, window widths, averaging methods, and filter types used in spectral analysis. All enums are decorated with `TypeConverter` and `Description` attributes to support user-friendly display in UI components.
+
+---
+
+## 2. Public Interface
+
+### `WindowAveragingType`
+**Namespace:** `DTS.Common.Enums.Viewer.Reports`  
+**Type:** `enum`
+
+Specifies the averaging method applied during PSD window processing.
+
+| Member | Description Attribute | Underlying Value |
+|--------|----------------------|------------------|
+| `Averaging` | "Averaging" | 0 |
+| `PeakHoldMax` | "Peak Hold MAX" | 1 |
+| `PeakHoldMin` | "Peak Hold MIN" | 2 |
+
+---
+
+### `PassFilterType`
+**Namespace:** `DTS.Common.Enums.Viewer.Reports`  
+**Type:** `enum`
+
+Specifies the filter algorithm type for PSD analysis.
+
+| Member | Description Attribute | Underlying Value |
+|--------|----------------------|------------------|
+| `Bessel` | "Bessel" | 0 |
+| `Butterworth` | "Butterworth" | 1 |
+| `Chebyshev` | "Chebyshev" | 2 |
+
+**Note:** A fourth member `CriticalDamping` is commented out in the source (see Gotchas).
+
+---
+
+### `WindowWidth`
+**Namespace:** `DTS.Common.Enums.Viewer.Reports`  
+**Type:** `enum`
+
+Specifies the FFT window size in samples. All values are explicit powers of two.
+
+| Member | Description Attribute | Underlying Value |
+|--------|----------------------|------------------|
+| `FiveTwelve` | "512" | 512 |
+| `TenTwentyFour` | "1024" | 1024 |
+| `TwentyFortyEight` | "2048" | 2048 |
+| `FortyNinetySix` | "4096" | 4096 |
+| `EightyOneNinetyTwo` | "8192" | 8192 |
+
+---
+
+### `WindowType`
+**Namespace:** `DTS.Common.Enums.Viewer.Reports`  
+**Type:** `enum`
+
+Specifies the window function applied to data before FFT transformation.
+
+| Member | Description Attribute | Underlying Value |
+|--------|----------------------|------------------|
+| `Rectangle` | "Rectangle" | 0 |
+| `Hamming` | "Hamming" | 1 |
+| `Hanning` | "Hanning" | 2 |
+| `Blackman` | "Blackman" | 3 |
+|