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fix: STTMuteFilter no longer sends STTMuteFrame

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This commit is contained in:
Mark Backman
2025-11-06 11:38:28 -05:00
parent 9f2ddcc5f4
commit f6b6aa8766
3 changed files with 14 additions and 30 deletions
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22
src/pipecat/processors/filters/stt_mute_filter.py
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@@ -118,24 +118,16 @@ class STTMuteFilter(FrameProcessor):
self._first_speech_handled = False
self._bot_is_speaking = False
self._function_call_in_progress = False
self._is_muted = False # Initialize as unmuted, will set state on StartFrame if needed
@property
def is_muted(self) -> bool:
"""Check if STT is currently muted.
Returns:
True if STT is currently muted and audio frames are being suppressed.
"""
return self._is_muted
self._is_muted = False
async def _handle_mute_state(self, should_mute: bool):
"""Handle STT muting and interruption control state changes."""
if should_mute != self.is_muted:
if should_mute != self._is_muted:
logger.debug(f"STTMuteFilter {'muting' if should_mute else 'unmuting'}")
self._is_muted = should_mute
await self.push_frame(STTMuteFrame(mute=should_mute), FrameDirection.UPSTREAM)
await self.push_frame(STTMuteFrame(mute=should_mute), FrameDirection.DOWNSTREAM)
# Note: We don't send STTMuteFrame to the STT service itself.
# The filter blocks frames locally, but the STT service continues
# processing audio to keep streaming connections alive (e.g., Google STT).
async def _should_mute(self) -> bool:
"""Determine if STT should be muted based on current state and strategies."""
@@ -215,7 +207,7 @@ class STTMuteFilter(FrameProcessor):
),
):
# Only pass VAD-related frames when not muted
if not self.is_muted:
if not self._is_muted:
await self.push_frame(frame, direction)
else:
logger.trace(f"{frame.__class__.__name__} suppressed - STT currently muted")
@@ -224,5 +216,5 @@ class STTMuteFilter(FrameProcessor):
await self.push_frame(frame, direction)
# Finally handle mute state change if needed
if should_mute is not None and should_mute != self.is_muted:
if should_mute is not None and should_mute != self._is_muted:
await self._handle_mute_state(should_mute)