The installer now fetches one male and one female Piper voice per language (Swedish
NST/Lisa, English Ryan/Lessac), with genders confirmed by measuring each voice's pitch
rather than guessed from the name. Settings -> Audio gets a voice selector per language
with its own Test button that always plays the Piper voice. Male is preselected for both.
The integration test now runs its server with an empty home directory, so voices
installed on the developer's own machine can't leak into it.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Announcements can use Piper, a free local neural TTS, instead of the browser's system
voice. No account, no paid service, and it keeps working with no internet at the track.
- npm run tts:install (or Settings -> Audio -> Install) downloads the standalone Piper
release for Linux/Windows/macOS plus Swedish and English voices into piper/ once
- server/tts.js generates each line once, one at a time, and caches it as WAV under
data/tts/; a new line takes ~0.3 s with the standalone build
- src/piper_speech.js plays it and falls back to the browser voice if Piper is missing,
errors, or takes over 2.5 s, so no announcement is lost and timing is never held up
- "Pre-generate phrases and driver names" renders every fixed phrase and name in both
languages before race day
Browser voice stays the default. Generation routes fall under the admin PIN.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
