Until now the Speaches branch sent every request to the single env-configured
model (de_DE-thorsten — a German voice for English radio), so the voice pool
had no audible effect. A server-side registry now resolves the logical voice
ids to disjoint controller/pilot Piper speakers; unknown ids keep the env
fallback and the cache key follows the resolved pair.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Whisper prompt seeding (per request):
- ptt.post.ts builds the prompt as generic ICAO bias + this state's expected
readback appended LAST (survives the 224-token truncation), in both raw token
form and spoken ICAO form via new radioSpeech.speakToken().
- pm.vue passes the expected phrase + active variable values; classroom.vue
passes the lesson's expected field values.
Per-field readback debug:
- sttMatch.matchTranscriptionToFields returns fields[] (matched/missing + which
view matched) plus normalized/denormalized transcription views.
- useRadioBackend types readback_report on the transmit response.
- pm.vue renders a "Readback check" panel in the right log rail; classroom.vue
renders per-field rows under the STT panel.
Radio-pronunciation fixes (radioSpeech.ts):
- callsign expander handles multi-letter suffixes (DLH6RK -> Lufthansa six Romeo
Kilo).
- toRadioSpeech now expands airports (EDDC -> Echo Delta Delta Charlie).
- bare altitudes >=1000 in a clearance context are spoken ("climb initially
5000" -> "climb initially five thousand feet"); speeds/headings untouched.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Replace the generic one-line Whisper prompt with a vocabulary-rich bias prompt
(phonetic alphabet, aviation number words, common phraseology, and the airline
telephony names pulled live from DEFAULT_AIRLINE_TELEPHONY) and set
temperature: 0. Aviation R/T is a constrained domain, so seeding the expected
vocabulary improves transcription of callsigns, runways, and readbacks — the
upstream input to the decision engine. Stays within the ~224-token prompt cap.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Usage tracking:
- new UsageEvent collection records every STT/TTS/LLM call per user with
provider, model, volume (audio seconds, characters, tokens) and an
estimated USD cost; self-hosted providers (Speaches/Piper) and cache
hits record at $0
- pricing table for whisper-1, tts-1, gpt-5-nano & co. in server/utils/usage.ts
- weekly KPI mail gains an "AI-Nutzung & Kosten" section: weekly and
rolling 30-day cost, per-kind breakdown, top 5 users by cost
- quota alert mail when rolling 30-day cost exceeds USAGE_ALERT_USD
(default $5), at most once per calendar month (UsageAlertDelivery)
Hardening:
- /api/atc/say now requires an authenticated session (middleware
exemption removed); useFlightLabAudio sends the bearer token
- /api/service/tools/latency requires auth (was a public LLM endpoint)
- per-user rate limits: PTT 20/min, say 60/min, latency 5/min
- cron endpoints (waitlist-drip, weekly-kpi-report) require a shared
secret via ?secret= or x-cron-secret (CRON_SECRET, falls back to
KPI_CRON_SECRET); allowed with a warning while unset so existing
deployments keep working
- PTT records the actual transcribed audio duration for billing accuracy
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Clients that already ran the full radiotelephony normalizer (see
normalizeATCText) pass preNormalized: true so the server skips
normalizeATC — double-normalizing corrupts the text, e.g. expandAirports
spells the city name "MAIN" letter-by-letter.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Real ATIS broadcasts run continuously; tuning in mid-broadcast should
drop the pilot into the current spoken position, then loop. The frontend
now generates the full announcement once via TTS, plays it as a looping
HTMLAudioElement, and seeks to ((Date.now() - lastUpdated) / duration)
on metadata-load so all clients tuned to the same ATIS hear it phase-
synced. The loop starts/stops automatically with frequency tuning and
restarts on info-letter change. say.post.ts now caches tag=atis like
tag=flightlab to avoid re-synthesizing identical announcements.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
- Fix client: playbackRate was set to 1 for non-native-speed providers (Speaches/Piper),
making the speed slider ineffective in the main Pizzicato audio path
- Fix server: pass speed parameter to Speaches TTS API
- Add pitch-preserving playback via MediaElementSourceNode when rate != 1,
routing through the same Web Audio effects chain (radio filters, distortion, etc.)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- say.post.ts:
- added AudioFmt type, format helpers (mime/ext), Speaches TTS integration
- routing: Speaches > Piper > OpenAI fallback
- supports dynamic formats (, ===============================================================================
flac - Command-line FLAC encoder/decoder version 1.5.0
Copyright (C) 2000-2009 Josh Coalson
Copyright (C) 2011-2025 Xiph.Org Foundation
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
===============================================================================
This is the short help; for all options use 'flac --help'; for more explanation
and examples please consult the manual. This manual is often distributed
alongside the program as a man page or an HTML file. It can also be found
online at https://xiph.org/flac/documentation_tools_flac.html
To encode:
flac [-#] [INPUTFILE [...]]
-# is -0 (fastest compression) to -8 (highest compression); -5 is the default
To decode:
flac -d [INPUTFILE [...]]
To test:
flac -t [INPUTFILE [...]], , ) or smallest
- uses VOICE_ID and SPEACHES_BASE_URL from ENV
- response returns correct mime, extension & base64
- meta extended with modelUsed and format
- ports & defaults configurable via ENV
