diff --git a/rc-race-sound-pack/README.md b/rc-race-sound-pack/README.md
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+# RC Race Sound Pack
+
+Repository-ready sound assets and event manifest for an RC racing timing application.
+
+## Included
+- 48 kHz / 16-bit mono WAV effects
+- Start tone
+- Transponder/pass beep
+- Warning and final-lap tones
+- Personal-best sting
+- Fastest-lap trophy sting
+- Track-record fanfare
+- Race-finish sting
+- Position gain/loss cues
+- Swedish and English TTS scripts in `sound_manifest.json`
+
+## Voice files
+Generate TTS as WAV and place files in `sounds/en/` and `sounds/sv/`, using the event keys
+from `sound_manifest.json` as filenames, for example `sounds/sv/fastest_lap.wav`.
+
+Recommended voice style: clear professional race director / PA announcer, energetic but short.
+Keep announcements dry (no reverb) so they remain intelligible over RC cars and PA systems.
+
+## Start sequence
+1. Play `drivers_ready`
+2. Play `start_phrase`
+3. Wait a random 1–4 seconds
+4. Play `effects/start_beep.wav`
+5. Start race timing on the tone
+
+## Integration
+Treat `sound_manifest.json` as the contract between timing events and audio assets.
+Effects can be used immediately; voice assets can later be replaced without code changes.
diff --git a/rc-race-sound-pack/sound_manifest.json b/rc-race-sound-pack/sound_manifest.json
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+{
+  "format": {
+    "sample_rate": 48000,
+    "channels": 1,
+    "pcm": "16-bit",
+    "recommended_runtime_gain_db": -6
+  },
+  "effects": [
+    "fastest_lap_trophy.wav",
+    "final_lap.wav",
+    "personal_best.wav",
+    "position_gain.wav",
+    "position_loss.wav",
+    "race_finish.wav",
+    "start_beep.wav",
+    "track_record_fanfare.wav",
+    "transponder_pass.wav",
+    "warning.wav"
+  ],
+  "voice_events": {
+    "en": {
+      "race_1_minute": "Race starts in one minute.",
+      "race_30_seconds": "Thirty seconds to start.",
+      "drivers_ready": "Drivers, stand by.",
+      "start_phrase": "Starting on the sound of the tone.",
+      "personal_best": "Personal best!",
+      "fastest_lap": "Fastest lap!",
+      "track_record": "New track record!",
+      "new_leader": "We have a new race leader.",
+      "one_minute_remaining": "One minute remaining.",
+      "thirty_seconds_remaining": "Thirty seconds remaining.",
+      "final_lap": "Final lap.",
+      "time_expired": "Time has expired. Finish the lap you are on.",
+      "race_finished": "Race is finished.",
+      "race_winner": "Race winner!"
+    },
+    "sv": {
+      "race_1_minute": "Start om en minut.",
+      "race_30_seconds": "Trettio sekunder till start.",
+      "drivers_ready": "Förare, gör er redo.",
+      "start_phrase": "Start på signalen.",
+      "personal_best": "Personbästa!",
+      "fastest_lap": "Snabbaste varv!",
+      "track_record": "Nytt banrekord!",
+      "new_leader": "Vi har en ny ledare.",
+      "one_minute_remaining": "En minut kvar.",
+      "thirty_seconds_remaining": "Trettio sekunder kvar.",
+      "final_lap": "Sista varvet.",
+      "time_expired": "Tiden är slut. Slutför pågående varv.",
+      "race_finished": "Racet är avslutat.",
+      "race_winner": "Segrare!"
+    }
+  },
+  "runtime": {
+    "start_delay_seconds": {
+      "min": 1.0,
+      "max": 4.0,
+      "randomize": true
+    },
+    "passing_sound": "effects/transponder_pass.wav",
+    "start_sound": "effects/start_beep.wav",
+    "fastest_lap_sound": "effects/fastest_lap_trophy.wav",
+    "track_record_sound": "effects/track_record_fanfare.wav",
+    "finish_sound": "effects/race_finish.wav"
+  }
+}
\ No newline at end of file
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