Datasets:
Tasks:
Automatic Speech Recognition
Formats:
parquet
Languages:
Nigerian Pidgin
Size:
1K - 10K
License:
| language: | |
| - pcm | |
| license: cc-by-sa-4.0 | |
| task_categories: | |
| - automatic-speech-recognition | |
| tags: | |
| - audio | |
| - speech | |
| - naija | |
| - pidgin | |
| dataset_info: | |
| features: | |
| - name: id | |
| dtype: string | |
| - name: speaker | |
| dtype: string | |
| - name: transcription | |
| dtype: string | |
| - name: audio | |
| dtype: audio | |
| - name: clip_start_ms | |
| dtype: int64 | |
| - name: clip_end_ms | |
| dtype: int64 | |
| - name: source_sent_id | |
| dtype: string | |
| - name: source_url | |
| dtype: string | |
| size_categories: | |
| - 1K<n<10K | |
| # **Naija-ASR-Corpus v2.0 (NAC-v2.0)** | |
| *A Foundational Automatic Speech Recognition Corpus for Nigerian Pidgin (Naija, PCM)* | |
| --- | |
| ## 📌 Dataset Summary | |
| **Naija-ASR-Corpus (NAC-v2.0)** is a speech dataset derived from the **Universal | |
| Dependencies Naija Spoken Corpus (UD_Naija-NSC)**. | |
| The NAC Team processed the original long-form recordings by: | |
| 1. **Segmenting** the audio into sentence-level clips. | |
| 2. **Aligning** each clip to its transcript (`text_ortho`) from the CoNLL-U source. | |
| 3. **Tagging** each sample with a unique id and the original speaker code. | |
| --- | |
| ## 🧩 Schema | |
| | Column | Type | Description | | |
| |------------------|--------|----------------------------------------------------------------------| | |
| | `id` | string | Unique identifier for this sample (UUID4) | | |
| | `speaker` | string | Speaker code from the source corpus (`speaker_id` in UD_Naija-NSC) | | |
| | `transcription` | string | ASR transcript text | | |
| | `audio` | audio | The audio clip, 16kHz mono | | |
| | `clip_start_ms` | int64 | Clip start offset (ms) in the original long-form recording | | |
| | `clip_end_ms` | int64 | Clip end offset (ms) in the original long-form recording | | |
| | `source_sent_id` | string | Sentence id from the UD_Naija-NSC source | | |
| | `source_url` | string | URL of the original long-form recording | | |
| Rows: **5883** | |
| --- | |
| ## 🛠️ Data Source & Attribution | |
| This dataset is derived from the **Universal Dependencies Naija Spoken Corpus | |
| (UD_Naija-NSC)**. The original continuous recordings were split into | |
| sentence-level clips and matched with their transcripts to build ASR-ready | |
| audio/text pairs. | |
| > This dataset contains content derived from *UD_Naija-NSC (Universal | |
| > Dependencies Naija Spoken Corpus)*, licensed under **CC-BY-SA 4.0**. | |
| > - **Original Authors:** UD_Naija-NSC contributors. | |
| > - **Original License:** https://creativecommons.org/licenses/by-sa/4.0/ | |
| --- | |
| ## 📜 Licensing | |
| Since this dataset is a derivative work of UD_Naija-NSC (CC-BY-SA 4.0), it is | |
| released under the **Creative Commons Attribution-ShareAlike 4.0 | |
| International (CC BY-SA 4.0)** license. | |
| You are free to: | |
| - **Share** — copy and redistribute the material in any medium or format. | |
| - **Adapt** — remix, transform, and build upon the material for any purpose, | |
| even commercially. | |
| Under the following terms: | |
| - **Attribution** — give appropriate credit to UD_Naija-NSC and the NAC Team. | |
| - **ShareAlike** — distribute your contributions under the same license as | |
| the original. | |
| --- | |
| ## 👥 Contributors | |
| ### NAC Team (Dataset Curation & Processing) | |
| - **Team Lead:** Augustine, Silver, Timmy | |
| - **Contributors:** Bryan, Ekene, Emmanuella, Shamsa | |
| ### Original Data Creators | |
| - **UD_Naija-NSC Team** (Universal Dependencies) | |
| --- | |
| ## 🙏 Acknowledgements | |
| This dataset builds on the same UD_Naija-NSC segmentation-and-alignment | |
| pipeline used to produce [`timniel/Pidgin_ASR_Dataset_Combined`](https://huggingface.co/datasets/timniel/Pidgin_ASR_Dataset_Combined). | |
| Credit and thanks go to **timniel** and the NAC Team for that earlier | |
| combined dataset and the processing approach it established — this release | |
| extends it with per-sample unique IDs, speaker attribution, clip timing, | |
| and source provenance fields. | |
| --- | |
| Pushed to: `voicedata/pidginData` | |