README.md

---
language:
- pcm
license: cc-by-sa-4.0
task_categories:
- automatic-speech-recognition
tags:
- audio
- speech
- naija
- pidgin
dataset_info:
  features:
  - name: audio
    dtype: audio
  - name: text
    dtype: string
size_categories:
- 1K<n<10K
---
# **Naija-ASR-Corpus v1.0 (NAC-v1.0)**

*A Foundational Automatic Speech Recognition Corpus for Nigerian Pidgin (Naija, PCM)*

---

## 📌 **Dataset Summary**

**Naija-ASR-Corpus (NAC-v1.0)** 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.  **Transcribing/Aligning** the text to create paired audio-text data suitable for ASR training.

This dataset is designed to support the development of Automatic Speech Recognition (ASR) systems for **Nigerian Pidgin (Naija, ISO 639-3: PCM)**.

---

## 🎯 **Use Cases**

* Automatic speech recognition (ASR)
* Speech-to-text research
* Linguistic analysis of segmented Naija speech

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## 🌍 **Language**

* **Language:** Nigerian Pidgin (Naija)
* **ISO 639-3 Code:** **PCM**

---

## 🧩 **Dataset Composition**

| Component              | Description                                           |
| ---------------------- | ----------------------------------------------------- |
| **Total Utterances**   | 5,883 processed speech clips                          |
| **Audio Format**       | `.wav` files, mono, 16kHz                             |
| **Transcripts**        | UTF-8 text                                            |

---

## 💻 **Code & Reproduction**

The scripts used to download, slice, process, and upload this dataset are open source available on GitHub:

1.  **Data Preparation (Slicing & Filtering):**
    *   [https://github.com/Timniel/naija-pidgin-asr-prep](https://github.com/Timniel/naija-pidgin-asr-prep)
2.  **Hugging Face Uploader Pipeline:**
    *   [https://github.com/Timniel/naija-asr-hf-uploader](https://github.com/Timniel/naija-asr-hf-uploader)

---

## 🛠️ **Data Source & Attribution**

**Source Material:**
This dataset is entirely derived from the **Universal Dependencies Naija Spoken Corpus (UD_Naija-NSC)**.

**modifications by NAC Team:**
The original continuous recordings were split into shorter clips (`pidgin_0001.wav` to `pidgin_5883.wav`) and matched with specific transcripts to facilitate machine learning tasks.

**Required Attribution:**
> 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/](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), this dataset 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** — You must give appropriate credit to **UD_Naija-NSC** and the **NAC Team**.
*   **ShareAlike** — If you remix, transform, or build upon the material, you must distribute your contributions under the same license as the original.

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## 👥 **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)