eSpeak NG 1.49.1 — GPL v3 or later
Copyright eSpeak NG contributors.
Unmodified browser build: https://github.com/pettarin/espeakng.js-cdn
Corresponding source and Emscripten build instructions: espeak-ng-1.49.1-source.zip
Upstream: https://github.com/espeak-ng/espeak-ng/tree/1.49.1
The built-in voice is synthesized, not a human recording.