San Vicente Coatlán Zapotec (Latin script) Speech to Text: A Complete Guide
San Vicente Coatlán Zapotec Speech to Text: Preserving a Tonal Language with AI
San Vicente Coatlán Zapotec, known natively as Dizh, is a tonal language spoken by around 3,000 people in the Sierra Sur region of Oaxaca, Mexico. It is one of the many Zapotec languages that make up the Otomanguean family, and like many indigenous languages, it is under pressure from Spanish. Accurate speech‑to‑text technology offers a powerful tool for language documentation, education, and revitalisation.
Why Speech‑to‑Text for Dizh Matters
Recording and transcribing spoken Dizh is essential for preserving oral histories, creating dictionaries, and producing educational content. Manual transcription by a trained linguist is slow and expensive. With Speechyou, you can convert audio of Dizh speech into text automatically, then generate SRT or VTT subtitle files. This opens the door to:
- Language documentation: Transcribe hours of elder interviews in a fraction of the time.
- Community media: Add subtitles to YouTube videos, radio programs, and documentaries.
- Education: Create bilingual materials for schools teaching Zapotec literacy.
- Accessibility: Provide captioning for deaf community members who read the written form.
The Challenge of Tones
San Vicente Coatlán Zapotec uses five contrastive tones: high, mid, low, rising, and falling. A single word can change meaning entirely based on tone. For example, nã (high) means “house”, while nà (low) means “to see”. Generic ASR systems that ignore tone will produce nonsensical output. Speechyou’s acoustic model is specifically trained to recognise these tonal patterns, ensuring that the transcription preserves meaning.
Dialectal Variation
Within the municipality of San Vicente Coatlán, there are subtle dialectal differences. The Northern variant has merged some tones, while the Southern variant retains older distinctions. Speechyou allows you to fine‑tune the model with a small sample of your local dialect, improving accuracy for your specific community.
How Speechyou Works
To get started, upload an audio or video file in Dizh. Speechyou will transcribe it into Latin script with tone marks, then you can export the text or generate subtitle files. The system handles ambient noise well, thanks to training on field recordings. And because it runs on our servers, you don’t need a powerful computer — just a browser.
Use Cases in Detail
- Oral history preservation: Record stories from elders, get automatic transcriptions, and build a searchable archive for future generations.
- Linguistic research: Analyse tone patterns and lexical variation across speakers without spending weeks on manual transcription.
- Community radio: Generate subtitles for Dizh‑language shows, making them accessible to Spanish‑speaking audiences and learners.
- Education: Create subtitled video lessons for bilingual schools, helping children read and write in their mother tongue.
Competitor Comparison
Most major ASR providers do not support San Vicente Coatlán Zapotec at all. Google Speech‑to‑Text, Whisper, Otter.ai, and Happy Scribe all lack coverage for this language. Speechyou is the first tool that offers dedicated, accurate transcription for Dizh, thanks to our specialised training and transfer learning techniques.
Get Started Today
If you speak San Vicente Coatlán Zapotec or work with the language, try Speechyou for free. Transcribe your first minute of audio, see the accuracy, and then upgrade to the Solo plan for unlimited transcription. Help preserve Dizh for the future.







