Update app.py

app.py

@@ -311,9 +311,9 @@ class RealTimeAudioProcessor:
     """
     Manages a single live call, bridging audio between the SAN system and Millis AI.
     """
-    PHONE_RATE = 16000
+    PHONE_RATE = 8000
     MILLIS_RATE = 16000
-    CHUNK_MS = 20
+    CHUNK_MS = 40
     BYTES_PER_SAMPLE = 2
 
     MILLIS_CHUNK_SIZE = int(MILLIS_RATE * CHUNK_MS / 1000 * BYTES_PER_SAMPLE)