Section 3: STT/TTS & Speech Technology
How does Language Cloud support STT and TTS development?
Last Updated: July 30, 2026Short Answer Language Cloud helps communities organize the recordings, transcripts, translations, metadata, and language resources required for future speech technology projects. Expanded Answer Speech technologies do not begin with software. They begin with language resources. Before communities can realistically develop: Speech recognition Text-to-speech systems Pronunciation tools Voice assistants AI language applications they need organized language...
Can old recordings still be useful?
Last Updated: July 30, 2026Short Answer Absolutely. Historical recordings often contain some of the most valuable language resources available to a community. Expanded Answer Many communities possess recordings that were created decades ago. These recordings may exist on: Cassette tapes Reel-to-reel tapes CDs DVDs Hard drives Institutional archives Sometimes these recordings are overlooked because they seem outdated. In reality,...
How do dialects affect speech technologies?
Last Updated: July 30, 2026Short Answer Dialect differences influence pronunciation, vocabulary, grammar, and speaking patterns, all of which can affect how speech technologies perform. Expanded Answer Dialect variation is a natural part of language. Many Indigenous languages include: Regional pronunciations Alternate vocabulary Different spellings Local expressions Community-specific usage patterns These differences are important cultural and linguistic assets. However, they...
Why does speaker diversity matter?
Last Updated: July 30, 2026Short Answer Speech technologies perform better when they learn from a diverse group of speakers rather than a small number of voices. Expanded Answer No two people speak exactly the same way. Differences may occur because of: Age Gender Family history Dialect Community Personal speaking style Humans naturally adapt to these variations. Technology often struggles....
What is audio-text alignment?
Last Updated: July 30, 2026Short Answer Audio-text alignment is the process of connecting recordings directly to transcripts and translations so that spoken language and written language can be searched and studied together. Expanded Answer Imagine listening to a one-hour recording. Without a transcript, finding a specific word or story can be difficult. Even when a transcript exists, locating the...
Why are Elder recordings so important?
Last Updated: July 30, 2026Short Answer Elder recordings preserve language knowledge, pronunciation, storytelling traditions, cultural teachings, and lived experiences that may not exist anywhere else. Expanded Answer When communities think about language preservation, they often focus on words. But fluent Elders preserve much more than vocabulary. Every recording captures layers of knowledge that are difficult or impossible to preserve...
How much data is needed for speech recognition?
Last Updated: July 30, 2026Short Answer There is no universal answer. The amount of data required depends on the language, goals, dialects, speaker diversity, and desired level of accuracy. Expanded Answer One of the most common questions communities ask is: “How many recordings do we need?” The answer varies considerably. Several factors influence performance: Number of speakers Recording quality...
What is required to build Indigenous language speech models?
Last Updated: July 30, 2026Short Answer Successful speech technologies require organized recordings, transcripts, translations, metadata, speaker diversity, and long-term community participation. Expanded Answer Building speech technology is often compared to building a house. The visible technology is only the final layer. The foundation comes first. Speech technologies depend upon: RecordingsHigh-quality recordings provide examples of real language use. TranscriptsWritten representations...
Why don’t mainstream speech systems work well for Indigenous languages?
Last Updated: July 30, 2026Short Answer Most commercial speech systems were trained using enormous datasets from major world languages and often lack sufficient exposure to Indigenous language data. Expanded Answer People are often surprised when speech recognition performs poorly for Indigenous languages. The reason is relatively simple. Artificial intelligence learns from examples. Mainstream speech systems have typically been trained...
Why are STT and TTS important for Indigenous languages?
Last Updated: July 30, 2026Short Answer Speech technologies can help communities preserve oral knowledge, improve language accessibility, strengthen education, and create new opportunities for language learning. Expanded Answer Many Indigenous languages have traditionally been transmitted orally. As a result, recordings often contain some of the richest language resources available. Speech technologies create opportunities to unlock the value of those...
What is Text-to-Speech (TTS)?
Last Updated: July 30, 2026Short Answer Text-to-Speech (TTS) technology converts written text into spoken audio, allowing learners to hear words, phrases, lessons, and stories spoken aloud. Expanded Answer One of the biggest challenges facing language learners is access to fluent speakers. A learner may have a dictionary. They may have written lessons. They may have educational materials. But they...
What is Speech-to-Text (STT)?
Last Updated: July 30, 2026Short Answer Speech-to-Text (STT) technology converts spoken language into written text. In language revitalization, it can help communities transcribe recordings, interviews, stories, lessons, and conversations more efficiently. Expanded Answer Every language revitalization program eventually faces the same challenge. There are more recordings than there is time to transcribe. Many communities possess: Elder interviews Oral histories...