Add dataset card

README.md

@@ -1,52 +1,66 @@
 ---
-dataset_info:
-  features:
-  - name: audio_eng
-    dtype:
-      audio:
-        decode: false
-  - name: audio_lug
-    dtype:
-      audio:
-        decode: false
-  - name: text_eng
-    dtype: string
-  - name: text_lug
-    dtype: string
-  - name: id
-    dtype: string
-  - name: speaker_eng
-    dtype: string
-  - name: speaker_lug
-    dtype: string
-  - name: src_dur_s
-    dtype: float32
-  - name: tgt_dur_s
-    dtype: float32
-  - name: dur_ratio
-    dtype: float32
-  - name: src_speech_ratio
-    dtype: float32
-  - name: tgt_speech_ratio
-    dtype: float32
-  - name: source_dataset
-    dtype: string
-  - name: source_subset
-    dtype: string
-  splits:
-  - name: train
-    num_bytes: 57887644626.887215
-    num_examples: 144740
-  - name: test
-    num_bytes: 1181429475.1127872
-    num_examples: 2954
-  download_size: 58588608851
-  dataset_size: 59069074102.0
-configs:
-- config_name: default
-  data_files:
-  - split: train
-    path: data/train-*
-  - split: test
-    path: data/test-*
+language:
+- en
+- lug
+license: cc-by-4.0
+task_categories:
+- automatic-speech-recognition
+- translation
+pretty_name: Synthetic Parallel EN-LG (external)
 ---
+
+# Synthetic Parallel EN↔LG — external
+
+Voice-controlled synthetic parallel speech dataset for Luganda-English
+speech-to-speech translation, generated by the Hibiki-Zero fine-tuning pipeline.
+
+## Generation
+
+| Component | Model |
+|-----------|-------|
+| Translation | `Sunbird/translate-nllb-3.3b-salt` |
+| TTS | `Sunbird/orpheus-3b-tts-multilingual` |
+
+**English speakers:** `salt_eng_0001, salt_eng_0002, salt_eng_0003`
+
+**Luganda speakers:** `salt_lug_0001, waxal_lug_0001, waxal_lug_0002, waxal_lug_0003, waxal_lug_0004, waxal_lug_0005, waxal_lug_0007`
+
+**Speaker sampling:** N ∈ {1 (70%), 2 (20%), 3 (10%)} draws per text pair.
+
+## Source datasets (transcripts only — source audio discarded)
+
+  - `evie-8/afrispeech-200` (subset: `default`, lang: eng)
+  - `yigagilbert/combined-audio-eng` (subset: `default`, lang: eng)
+  - `yigagilbert/cv24-lug-eng` (subset: `default`, lang: eng)
+
+## Post-processing
+
+- Silero / energy VAD silence trim on every clip
+- Duration filter: Luganda 1.5–30.0 s,
+  English 1.0–30.0 s
+- Duration ratio filter: 0.3–4.0
+- Speech-activity filter: ≥ 0.35
+- Sample rate: 24000 Hz (mono, float32 → PCM-16 WAV)
+
+## Schema
+
+| Column | Type | Description |
+|--------|------|-------------|
+| `audio_lug` | Audio | Luganda synthesized clip |
+| `audio_eng` | Audio | English synthesized clip |
+| `text_lug` | string | Luganda transcript |
+| `text_eng` | string | English transcript |
+| `speaker_lug` | string | Orpheus speaker ID used for Luganda |
+| `speaker_eng` | string | Orpheus speaker ID used for English |
+| `src_dur_s` | float | Luganda clip duration after VAD trim (s) |
+| `tgt_dur_s` | float | English clip duration after VAD trim (s) |
+| `dur_ratio` | float | tgt / src duration ratio |
+| `src_speech_ratio` | float | VAD speech fraction — Luganda |
+| `tgt_speech_ratio` | float | VAD speech fraction — English |
+| `source_dataset` | string | Originating HF dataset repo |
+| `source_subset` | string | Originating subset / config name |
+
+## Failure manifest
+
+Rows that failed TTS generation (after 3 retries) or post-processing
+are logged to: [https://huggingface.co/datasets/yigagilbert/synthetic-parallel-external/resolve/main/failure_manifest.jsonl](https://huggingface.co/datasets/yigagilbert/synthetic-parallel-external/resolve/main/failure_manifest.jsonl)