Update README.md

README.md

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----
-license: cc-by-4.0
----
+---
+license: cc-by-4.0
+language:
+- en
+tags:
+- code
+pretty_name: SAM
+size_categories:
+- 10K<n<100K
+---
+
+## Dataset Overview
+
+- **Name**: SAM (Spatial Audio-driven human Motion)
+- **Purpose**: This dataset provides paired human motion sequences and corresponding spatial audio for modeling and analysis.
+- **Source**: Captured using a Vicon motion capture system.
+- **Size**: Over 9 hours of recordings at 120 frames per second (FPS).
+
+## Folder Structure
+
+```text
+SAM/
+|- audio/
+│- bvh/
+|- c3d/
+|- motion/
+|- retarget/
+|- splits/
+|- stereo_audio/
+|- ignore_list.txt
+|- ssl.npy
+|- subject_ids.txt
+```
+
+- **`audio/`**: Stereo audio clips that have already been separated into left and right channels.
+- **`bvh/`**: Raw BVH motion-capture exports from the Vicon Shogun pipeline.
+- **`c3d/`**: Raw C3D recordings from the same capture sessions, preserved for custom processing.
+- **`motion/`**: MOSPA-ready motion files in NPZ format, including the sound-source location in the character’s local space.
+- **`retarget/`**: BVH files after the retargeting step, prior to conversion into the NPZ motion assets.
+- **`splits/`**: Dataset split definitions (train/val/test) stored as three TXT files indexed by IDs.
+- **`stereo_audio/`**: Stereo audio sequences aligned with each motion sample via shared IDs.
+
+## Important Files
+
+- **`ignore_list.txt`**: IDs flagged for questionable motion or audio; skip them at your discretion.
+- **`ssl.npy`**: Global sound-source coordinates (AMASS frame). Shape `(12, 4, 3)` = 12 subjects × 4 speakers × XYZ.
+- **`subject_ids.txt`**: Maps every motion sequence ID to its subject.
+
+## How to Use This Dataset
+
+Usage and baseline pipelines: [MOSPA](https://github.com/xsy27/Mospa-Acoustic-driven-Motion-Generation.git).
+
+## ID Encoding
+
+Each sample ID is a 7-digit token:
+
+| Digits | Meaning | Values |
+| --- | --- | --- |
+| 0–2 | Audio clip |  |
+| 3 | Source direction | `0 front`, `1 right`, `2 left`, `3 back` |
+| 4 | Speaker | `0 Speaker_A_R`, `1 Speaker_A_L`, `2 Speaker_B_R`, `3 Speaker_B_L` |
+| 5 | Distance | `0 close`, `1 far` |
+| 6 | Motion genre | `0 insensitive`, `1 neutral`, `2 sensitive` |
+
+## Known Issues
+
+We recommend retargeting motions yourself; raw BVH/C3D files are provided for that purpose. Some sound-source annotations contain mocap noise, so consider using the fixed global locations defined in `ssl.npy`.