Ngangam Speech to Text: Preserving a Gur Language with AI
Ngangam is a tonal Gur language spoken by around 50,000 people in northern Togo and Benin. It is a vital part of daily life in communities like Kara and Atakora, used in homes, markets, and ceremonies. However, like many minority languages, Ngangam faces pressure from French, the official language of both countries. Digital tools that support Ngangam can help maintain its vitality.
Why Accurate Speech-to-Text Matters
Transcribing Ngangam audio is not just a technical exercise; it is a way to document oral history, create educational materials, and make content accessible. For example, elders’ stories can be turned into written texts for future generations. Local radio stations can subtitle their broadcasts for deaf listeners. Researchers can analyze speech patterns without manual effort. Without a reliable speech-to-text tool, these tasks are slow and expensive.
Challenges in Transcribing Ngangam
- Tonal system: Ngangam uses pitch to distinguish meaning. A single syllable can have high or low tone, changing the word entirely. Most ASR systems ignore tone, leading to errors.
- Limited data: Publicly available Ngangam speech datasets are scarce. Training a model from scratch is impractical.
- Code-switching: Many speakers mix Ngangam and French, sometimes within the same sentence. The system must handle both.
- Orthographic variation: Different writers may spell the same word differently (e.g., using 'c' or 'k'). Flexibility is needed.
How Speechyou Overcomes These Challenges
Speechyou’s Ngangam model uses a combination of transfer learning from related Gur languages and fine-tuning on a curated corpus. The acoustic model includes tone detection, so words like nɔŋ (speech) and nɔ̀ŋ (mouth) are distinguished. A multilingual component handles French loanwords. Users can also upload a custom glossary to enforce preferred spellings.
Use Cases for Ngangam Transcription
- Oral history preservation: Record and transcribe interviews with elders.
- Community media: Add subtitles to Ngangam videos on YouTube or Facebook.
- Education: Create reading materials from spoken lessons.
- Accessibility: Provide live captions for community meetings.
- Linguistic research: Build corpora for dictionary projects.
- Religious contexts: Transcribe sermons for distribution.
Getting Started with Speechyou
To transcribe Ngangam audio, simply upload your file or use the live recording feature. Choose Ngangam as the language. Speechyou will process the audio and return a transcript with timestamps. You can export as plain text, SRT, or VTT. The Solo plan includes unlimited transcription, making it affordable for individuals and small organizations.
Future of Ngangam Speech Technology
As more Ngangam speakers use Speechyou, the model improves through active learning. We are committed to supporting minority languages and ensuring that no language is left behind in the digital age. Whether you are a linguist, a community leader, or a content creator, Speechyou gives you the power to turn Ngangam speech into text accurately and efficiently.
