[3.0.0] generating silence

chatbot.py

@@ -96,6 +96,24 @@ class STTSink(Sink):
         self.user_ws = {}
         self.buffers = {}          # audio accumulé par user
         self.last_send = {}        # timestamp dernier envoi
+        self.last_voice = {}
+
+        asyncio.run_coroutine_threadsafe(self._send_silence_loop(), MAIN_LOOP)
+
+    async def _send_silence_loop(self):
+        while True:
+            await asyncio.sleep(0.2)
+            now = time.time()
+
+            for user_id, last in list(self.last_voice.items()):
+                if now - last > 0.7:
+                    # 200 ms de silence @ 16kHz int16
+                    silence = np.zeros(3200, dtype=np.int16).tobytes()
+
+                    await self._send_audio(user_id, silence)
+
+                    # reset pour éviter le spam
+                    self.last_voice[user_id] = now
 
     async def _get_ws(self, user_id):
         if user_id not in self.user_ws:
@@ -123,9 +141,12 @@ class STTSink(Sink):
             return
 
         audio = discord_pcm_to_whisper_int16(pcm_bytes)
+
         if not audio:
             return
 
+        self.last_voice[user_id] = time.time()
+
         if user_id not in self.buffers:
             self.buffers[user_id] = []
             self.last_send[user_id] = time.time()