feat: add --listen-during-wake-sound argument (#273)

* feat: add --listen-during-wake-sound argument

---------

Co-authored-by: Florian Asche <github@florian-asche.de>

linux_voice_assistant/__main__.py

@@ -224,6 +224,11 @@ async def main() -> None:
         default=900.0,  # 15 minutes
         help="Seconds before a ringing timer auto-stops (default: 900)",
     )
+    parser.add_argument(
+        "--listen-during-wake-sound",
+        action="store_true",
+        help="Start listening immediately after wake word detection, without waiting for the wake sound to finish",
+    )
     parser.add_argument(
         "--debug",
         action="store_true",
@@ -426,6 +431,7 @@ async def main() -> None:
         mic_noise_suppression=preferences.mic_noise_suppression,
         audio_input_channels=args.audio_input_channels,
         timer_max_ring_seconds=args.timer_max_ring_seconds,
+        listen_during_wake_sound=args.listen_during_wake_sound,
     )
 
     if fallback_used:

linux_voice_assistant/models.py

@@ -174,6 +174,7 @@ class ServerState:
     mic_volume: int = 100  # 1–100, default maximum
     audio_input_channels: int = 2  # number of mic channels to stream
     timer_max_ring_seconds: float = 900.0
+    listen_during_wake_sound: bool = False
 
     def broadcast(self, msgs: "Iterable[message.Message]") -> None:
         """Send messages to every connected API client.

linux_voice_assistant/satellite.py

@@ -834,10 +834,25 @@ class VoiceSatelliteProtocol(APIServer):
         self._pipeline_active = True
         self._emit(LVAEvent.WAKE_WORD_DETECTED)
         self.duck()
-        self.state.tts_player.play(
-            self.state.wakeup_sound,
-            done_callback=lambda: self._on_wakeup_sound_finished(wake_word_phrase),
+        if self.state.listen_during_wake_sound:
+            _LOGGER.debug("Starting audio streaming immediately (listen_during_wake_sound enabled)")
+            self.state.tts_player.play(self.state.wakeup_sound)
+            self._start_audio_streaming(wake_word_phrase)
+        else:
+            self.state.tts_player.play(
+                self.state.wakeup_sound,
+                done_callback=lambda: self._on_wakeup_sound_finished(wake_word_phrase),
+            )
+
+    def _start_audio_streaming(self, wake_word_phrase: str) -> None:
+        """Start streaming audio during wake sound detection."""
+        _LOGGER.debug(
+            "Starting audio streaming for: %s",
+            wake_word_phrase,
         )
+        self.send_messages([VoiceAssistantRequest(start=True, wake_word_phrase=wake_word_phrase)])
+        self._is_streaming_audio = True
+        self._emit(LVAEvent.LISTENING)
 
     def _on_wakeup_sound_finished(self, wake_word_phrase: str) -> None:
         """Callback invoked when the wakeup chime finishes; begin STT streaming."""