| --- |
| 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) |
|
|
