diff --git a/src/pipecat/frames/frames.py b/src/pipecat/frames/frames.py
index 1b43f8ba3..6d2ece36e 100644
--- a/src/pipecat/frames/frames.py
+++ b/src/pipecat/frames/frames.py
@@ -1093,15 +1093,17 @@ class StartInterruptionFrame(InterruptionFrame):
 
 @dataclass
 class UserStartedSpeakingFrame(SystemFrame):
-    """Frame indicating user has started speaking.
+    """Frame indicating that the user turn has started.
 
-    Emitted by VAD to indicate that a user has started speaking. This can be
-    used for interruptions or other times when detecting that someone is
-    speaking is more important than knowing what they're saying (as you will
-    get with a TranscriptionFrame).
+    Emitted when the user turn starts, which usually means that some
+    transcriptions are already available.
 
     Parameters:
         emulated: Whether this event was emulated rather than detected by VAD.
+
+            .. deprecated:: 0.0.99
+                This field is deprecated and will be removed in a future version.
+
     """
 
     emulated: bool = False
@@ -1109,12 +1111,17 @@ class UserStartedSpeakingFrame(SystemFrame):
 
 @dataclass
 class UserStoppedSpeakingFrame(SystemFrame):
-    """Frame indicating user has stopped speaking.
+    """Frame indicating that the user turn has ended.
 
-    Emitted by the VAD to indicate that a user stopped speaking.
+    Emitted when the user turn ends. This usually coincides with the start of
+    the bot turn.
 
     Parameters:
         emulated: Whether this event was emulated rather than detected by VAD.
+
+            .. deprecated:: 0.0.99
+                This field is deprecated and will be removed in a future version.
+
     """
 
     emulated: bool = False
diff --git a/src/pipecat/processors/aggregators/llm_response_universal.py b/src/pipecat/processors/aggregators/llm_response_universal.py
index 56b5e9e22..9c687492c 100644
--- a/src/pipecat/processors/aggregators/llm_response_universal.py
+++ b/src/pipecat/processors/aggregators/llm_response_universal.py
@@ -407,7 +407,7 @@ class LLMUserAggregator(LLMContextAggregator):
         if self._params.enable_user_speaking_frames:
             logger.debug(f"User started speaking (user turn start strategy: {strategy})")
             # TODO(aleix): These frames should really come from the top of the pipeline.
-            await self.broadcast_frame(UserStartedSpeakingFrame, emulated=strategy is None)
+            await self.broadcast_frame(UserStartedSpeakingFrame)
             await self.broadcast_frame(InterruptionFrame)
 
     async def _trigger_bot_turn_start(self, strategy: BaseBotTurnStartStrategy):
@@ -419,7 +419,7 @@ class LLMUserAggregator(LLMContextAggregator):
         if self._params.enable_user_speaking_frames:
             logger.debug(f"User stopped speaking (bot turn start strategy: {strategy})")
             # TODO(aleix): This frame should really come from the top of the pipeline.
-            await self.broadcast_frame(UserStoppedSpeakingFrame, emulated=strategy is None)
+            await self.broadcast_frame(UserStoppedSpeakingFrame)
 
         # Always push context frame.
         await self.push_aggregation()