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Add Penalty when Smart Turn hasn't been run #86

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Merged
sam-s10s merged 2 commits into from
Feb 25, 2026
+10 −0
Merged

Add Penalty when Smart Turn hasn't been run #86

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651ef95
Add No Signal Penalty for Smart Turn
LArmstrongDev Feb 24, 2026
b9556b3
Update Penalty to Extend TTL
LArmstrongDev Feb 24, 2026
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6 changes: 6 additions & 0 deletions sdk/voice/speechmatics/voice/_client.py
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Original file line number Diff line number Diff line change
Expand Up @@ -318,6 +318,7 @@ def __init__(
)

# Uses ForceEndOfUtterance message
# Todo - fix this logic as use FEOU isn't the same as just not using fixed.
self._uses_forced_eou: bool = not self._uses_fixed_eou
self._forced_eou_active: bool = False
self._last_forced_eou_latency: float = 0.0
Expand Down Expand Up @@ -1421,6 +1422,7 @@ async def _emit_end_of_turn(self) -> None:
# Flag as turn active
self._turn_active = False


# Metadata (for LAST view)
metadata = MessageTimeMetadata(start_time=self._turn_start_time, end_time=self._previous_view.end_time)

Expand Down Expand Up @@ -1526,6 +1528,10 @@ async def _calculate_finalize_delay(
# Smart Turn enabled
if self._smart_turn_detector:
annotation.add(AnnotationFlags.SMART_TURN_ACTIVE)
# If Smart Turn hasn't returned a result yet but is enabled, add NO_SIGNAL annotation.
# This covers the case where the TTL fires before VAD triggers Smart Turn inference.
if not annotation.has(AnnotationFlags.SMART_TURN_TRUE) and not annotation.has(AnnotationFlags.SMART_TURN_FALSE):
annotation.add(AnnotationFlags.SMART_TURN_NO_SIGNAL)
else:
annotation.add(AnnotationFlags.SMART_TURN_INACTIVE)

Expand Down
4 changes: 4 additions & 0 deletions sdk/voice/speechmatics/voice/_models.py
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Expand Up @@ -261,6 +261,7 @@ class AnnotationFlags(str, Enum):
SMART_TURN_INACTIVE = "smart_turn_inactive"
SMART_TURN_TRUE = "smart_turn_true"
SMART_TURN_FALSE = "smart_turn_false"
SMART_TURN_NO_SIGNAL = "smart_turn_no_signal"


# ==============================================================================
Expand Down Expand Up @@ -445,6 +446,9 @@ class EndOfTurnConfig(BaseModel):
EndOfTurnPenaltyItem(
penalty=2.0, annotation=[AnnotationFlags.SMART_TURN_FALSE, AnnotationFlags.SMART_TURN_ACTIVE]
),
EndOfTurnPenaltyItem(
penalty=1.5, annotation=[AnnotationFlags.SMART_TURN_NO_SIGNAL, AnnotationFlags.SMART_TURN_ACTIVE]
),
#
# VAD - only applied when smart turn is not in use and on the speaker stopping
EndOfTurnPenaltyItem(
Expand Down