Molimo Speech to Text: Bringing Automatic Transcription to an Endangered Language

Where Is Molimo Spoken?

Molimo, known natively as Mox, is a Papuan language of the Trans–New Guinea family, spoken in a cluster of villages in the mountains of Morobe Province, Papua New Guinea. With fewer than 1,000 speakers, it is classified as endangered. The language uses a Latin script introduced by missionaries, but written materials are scarce. Most of its speakers are bilingual in Tok Pisin, the national lingua franca, yet Molimo remains the primary language for daily conversation and cultural expression.

Why Accurate Speech to Text Matters for Molimo

Accurate automatic speech recognition (ASR) for Molimo is not just a technical convenience — it is a tool for language survival. Transcription allows communities to record and archive oral traditions, create subtitles for locally produced videos, and develop literacy materials for children. For researchers, it speeds up the work of documenting grammar and vocabulary. Until recently, no ASR tool supported Molimo, forcing those who needed text from audio to do it manually.

Transcription Challenges Specific to Molimo

Tonal Phonology

Molimo uses contrasting lexical tones, meaning a word’s pitch can change its definition. Most commercial speech engines ignore tone, producing garbled results. Speechyou’s model incorporates tonal training data to distinguish minimal pairs.

Dialectical Variation

As mentioned in the dialects section, variations in consonants and vowels across villages can confuse a model trained on a single dialect. Speechyou mitigates this by training on multiple dialect recordings and offering dialect-specific tuning.

Lack of Training Data

Low-resource languages typically suffer from a data scarcity problem. Speechyou solves this with transfer learning from related Finisterre–Huon languages and incremental learning as users submit transcriptions.

Use Cases in Practice

• Oral history preservation: Elders recount stories and genealogies, which are recorded and automatically transcribed to create a permanent written archive.
• Educational subtitles: Schools produce Molimo-subtitled videos for teaching both the language and other subjects.
• Health outreach: NGOs broadcast malaria or nutrition information in Molimo and then distribute text versions of the announcements.
• Religious translation: Churches transcribe sermons and scriptural readings for distribution in remote areas.
• Linguistic field research: Academics upload field recordings and receive time-aligned transcripts for analysis.

How Speechyou Helps

Speechyou offers the first ever AI-powered speech-to-text service for Molimo. The platform supports uploading audio or video files of up to 2GB and outputs text in minutes. You can generate subtitles in SRT or VTT format, ready for use in video editing software. The Solo plan includes unlimited transcription, making it affordable for individuals and community groups. By using Speechyou, Molimo speakers and advocates can ensure their language remains documented and accessible in the digital age.

Getting Started

To transcribe Molimo audio, simply upload your file, select “Molimo” as the language, and click transcribe. The system will return a draft that you can edit and export. As more users contribute, the model becomes even more accurate, benefiting the entire community.

Speechyou is committed to supporting endangered languages. We invite anyone working with Molimo to try our service and help us improve.