diff --git a/example/lib/main.dart b/example/lib/main.dart
index effb54c..7b677df 100644
--- a/example/lib/main.dart
+++ b/example/lib/main.dart
@@ -38,7 +38,7 @@ class MyApp extends StatelessWidget {
 class MyHomePage extends StatelessWidget {
   const MyHomePage({super.key});
 
-  final url = 'ws://localhost:7880';
+  final url = 'wss://livekit.example.com';
   final token = 'your_token_here';
 
   /// handle join button pressed, fetch connection details and connect to room.
diff --git a/lib/src/context/room_context.dart b/lib/src/context/room_context.dart
index 21f0a16..47cb730 100644
--- a/lib/src/context/room_context.dart
+++ b/lib/src/context/room_context.dart
@@ -199,7 +199,10 @@ class RoomContext extends ChangeNotifier with ChatContextMixin {
   /// Get the [Room] instance.
   Room get room => _room;
 
-  /// enable audio visualizer
+  /// enable audio visualizer, default is false
+  /// if true, the audio visualizer will be enabled in the room.
+  /// you can use the [AudioVisualizerWidget] widget to show the
+  /// audio visualizer.
   final bool enableAudioVisulizer;
 
   String? _roomName;