---
pretty_name: OpenBible Swahili
language:
- swa
license: cc-by-sa-4.0
task_categories:
- automatic-speech-recognition
- text-to-speech
---

# Dataset Card for OpenBible Swahili

OpenBible Swahili is a verse-level segmented audio of [Swahili: Biblica® Open Kiswahili Contemporary Version (Neno)](https://open.bible/bibles/swahili-biblica-audio-bible/). This dataset/project is inspired by [masakhane-io/bibleTTS](https://github.com/masakhane-io/bibleTTS) and [coqui-ai/open-bible-scripts](https://github.com/coqui-ai/open-bible-scripts), with a twist of applying the more recent [Massively Multilingual Speech (MMS)](https://arxiv.org/abs/2305.13516) for audio alignment.

## Dataset Details

### Dataset Description

> For a more detailed description, please refer to [OpenBible-TTS](https://github.com/bookbot-hive/OpenBible-TTS/tree/main).

We followed the [CTC Forced Alignment API Tutorial](https://pytorch.org/audio/main/tutorials/ctc_forced_alignment_api_tutorial.html) graciously provided by PyTorch. We used the [Massively Multilingual Speech (MMS)](https://arxiv.org/abs/2305.13516) model to align the audio to the text.

Like the challenges explained in the MMS paper, we also faced the same noisy audio alignment issues:

- Chapter introduction narration
- Occasional verse number reading
- Digits/number handling

While [masakhane-io/bibleTTS](https://github.com/masakhane-io/bibleTTS) proposes a solution by manually (1) inserting chapter introduction transcript and (2) spells out numbers, we decided to use a mix of MMS' method by (1) inserting `*` token for additional speech (e.g. chapter introduction, verse number reading) and (2) converting digits to words using [num2words](https://github.com/rhasspy/num2words), if available.

The aligned verse text and audio are then segmented into verse-level segments for TTS model training. We recommend reading the MMS paper for better understanding.

- **Homepage:** [https://github.com/bookbot-hive/OpenBible-TTS/](https://github.com/bookbot-hive/OpenBible-TTS/)
- **Repository:** [https://github.com/bookbot-hive/OpenBible-TTS/](https://github.com/bookbot-hive/OpenBible-TTS/)
- **Point of Contact:** [Wilson Wongso](mailto:wilson@bookbotkids.com)

## Usage

```py
from datasets import load_dataset

# all 66 books
dataset = load_dataset("bookbot/OpenBible_Swahili", trust_remote_code=True)
# only Genesis
dataset = load_dataset("bookbot/OpenBible_Swahili", "GEN", trust_remote_code=True)
```

## Dataset Structure

### Data Instances

```python
{
    "id": "GEN_001_001",
    "verse_id": "GEN 1:1",
    "audio": {
        "path": "GEN/GEN_001/GEN_001_001.wav",
        "array": array([0.0010376, 0.0007019, 0.00015259, ..., 0.00817871, 0.00482178, 0.01132202]),
        "sampling_rate": 44100,
    },
    "verse_text": "Hapo mwanzo Mungu aliumba mbingu na dunia.",
    "transcript": "hapo mwanzo mungu aliumba mbingu na dunia",
}
```

### Data Fields

- `id`: a unique identifier for the verse, formatted as `BOOK_CHAPTER_VERSE`.
- `verse_id`: the verse identifier, formatted as `BOOK CHAPTER:VERSE`.
- `audio`: a dictionary containing the path to the audio file, the decoded audio array, and the sampling rate.
  - `path`: the path to the audio file.
  - `array`: the decoded audio array.
  - `sampling_rate`: the sampling rate of the audio.
- `verse_text`: the verse text, with proper capitalization and punctuations.
- `transcript`: the lowercased, punctuation-removed version of `verse_text`, used during forced-alignment.

### Data Splits

| USX Code | Book Name       |   #verses |
| :------: | --------------- | --------: |
|   GEN    | Genesis         |      1533 |
|   EXO    | Exodus          |      1213 |
|   LEV    | Leviticus       |       859 |
|   NUM    | Numbers         |      1288 |
|   DEU    | Deuteronomy     |       959 |
|   JOS    | Joshua          |       658 |
|   JDG    | Judges          |       618 |
|   RUT    | Ruth            |        85 |
|   1SA    | 1 Samuel        |       810 |
|   2SA    | 2 Samuel        |       695 |
|   1KI    | 1 Kings         |       816 |
|   2KI    | 2 Kings         |       719 |
|   1CH    | 1 Chronicles    |       942 |
|   2CH    | 2 Chronicles    |       822 |
|   EZR    | Ezra            |       280 |
|   NEH    | Nehemiah        |       406 |
|   EST    | Esther          |       167 |
|   JOB    | Job             |      1070 |
|   PSA    | Psalms          |      2461 |
|   PRO    | Proverbs        |       915 |
|   ECC    | Ecclesiastes    |       222 |
|   SNG    | Song of Songs   |       117 |
|   ISA    | Isaiah          |      1292 |
|   JER    | Jeremiah        |      1364 |
|   LAM    | Lamentations    |       154 |
|   EZK    | Ezekiel         |      1273 |
|   DAN    | Daniel          |       357 |
|   HOS    | Hosea           |       197 |
|   JOL    | Joel            |        73 |
|   AMO    | Amos            |       146 |
|   OBA    | Obadiah         |        21 |
|   JON    | Jonah           |        48 |
|   MIC    | Micah           |       105 |
|   NAM    | Nahum           |        47 |
|   HAB    | Habakkuk        |        56 |
|   ZEP    | Zephaniah       |        53 |
|   HAG    | Haggai          |        38 |
|   ZEC    | Zechariah       |       211 |
|   MAL    | Malachi         |        55 |
|   MAT    | Matthew         |      1071 |
|   MRK    | Mark            |       678 |
|   LUK    | Luke            |      1151 |
|   JHN    | John            |       879 |
|   ACT    | Acts            |      1007 |
|   ROM    | Romans          |       433 |
|   1CO    | 1 Corinthians   |       437 |
|   2CO    | 2 Corinthians   |       257 |
|   GAL    | Galatians       |       149 |
|   EPH    | Ephesians       |       155 |
|   PHP    | Philippians     |       104 |
|   COL    | Colossians      |        95 |
|   1TH    | 1 Thessalonians |        89 |
|   2TH    | 2 Thessalonians |        47 |
|   1TI    | 1 Timothy       |       113 |
|   2TI    | 2 Timothy       |        83 |
|   TIT    | Titus           |        46 |
|   PHM    | Philemon        |        25 |
|   HEB    | Hebrews         |       303 |
|   JAS    | James           |       108 |
|   1PE    | 1 Peter         |       105 |
|   2PE    | 2 Peter         |        61 |
|   1JN    | 1 John          |       105 |
|   2JN    | 2 John          |        13 |
|   3JN    | 3 John          |        15 |
|   JUD    | Jude            |        25 |
|   REV    | Revelation      |       404 |
|          | **Total**       | **31103** |

## Additional Information

### Licensing Information

[CC-BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/)