On the recordRead 12 Oct 202618 facts
Flite
Plans and prices
Flite
Free
Open source speech synthesis engine · single 8K diphone voice included
Read 12 Oct 2026 · github.com
On the record
- API access
- Yesgithub.com · read 20 Sep 2026
- Commercial use
- Yesgithub.com · read 20 Sep 2026
- Companion app
- The README describes Bard Storyteller as an app that reads text, HTML, and EPUB ebooks aloud using Flite.github.com · read 12 Oct 2026
- Deployment
- Voice, lexicon, and language data can be compiled into C representations and linked into an application, and voice files may also be loaded from disk or HTTP.github.com · read 12 Oct 2026
- Export formats
- WAVgithub.com · read 20 Sep 2026
- Features
- The command-line program synthesizes strings or files to audio devices or waveform files, and the library provides simple functions for applications.github.com · read 12 Oct 2026
- Implementation
- The engine is written in ANSI C and does not require Festival or FestVox to compile or run.github.com · read 12 Oct 2026
- Integration
- Flite can be used as a library in applications, and the repository documents SAPI support for clustergen voices.github.com · read 12 Oct 2026
- Languages
- The project describes Indic language support and hundreds of languages through grapheme support.github.com · read 12 Oct 2026
- License
- The project says the core code is free to use in commercial products under its BSD-like copyright terms; some included files have separate licenses.github.com · read 12 Oct 2026
- Purpose
- Flite is a small, fast, open source run-time text-to-speech engine.github.com · read 12 Oct 2026
- Quality tradeoff
- The bundled 8 kHz diphone voice is described as a sample voice, and the README notes it is less computationally expensive but more robotic than other voice technology in Flite.github.com · read 12 Oct 2026
- Resource limits
- For standard diphone voices, the README estimates maximum run-time memory at less than twice the memory needed for the generated waveform, or under 1 MB on 32-bit architectures.github.com · read 12 Oct 2026
- Security
- The README warns that command-line feature-setting options are debug facilities and malicious values can stop Flite from working, so they are not intended for standard users.github.com · read 12 Oct 2026
- Thread safety
- The README describes Flite as thread safe, with the release notes specifying thread safety after initialization.github.com · read 12 Oct 2026
- Use cases
- It is designed for small devices such as phones and PDAs, as well as large servers that need to serve many ports.github.com · read 12 Oct 2026
- Voices
- The distribution includes one 8K diphone voice, a pruned lexicon, and US English models; additional voices can be downloaded or loaded from files or an HTTP connection.github.com · read 12 Oct 2026
