fix merge segments

app/core/config.py

@@ -63,8 +63,8 @@ class Settings(BaseSettings):
     vad_min_silence_duration_ms: int = 800
     
     # Post-processing
-    merge_threshold_s: float = 0.5  # Merge segments from same speaker if gap < this
-    min_segment_duration_s: float = 0.3 # Remove segments shorter than this
+    merge_threshold_s: float = 0.30  # Merge segments from same speaker if gap < this
+    min_segment_duration_s: float = 0.35 # Remove segments shorter than this
     
     # Transcribe
     CONTEXT_WINDOW_S: int = 20

app/services/alignment.py

@@ -33,11 +33,11 @@ class AlignmentService:
     Uses word-center-based algorithm for accurate speaker-to-text mapping.
     """
     
-    PAUSE_THRESHOLD = 1.0
-    CENTER_TOL = 0.18 # ms
-    OVERLAP_TH = 0.25 # > x% segments
+    PAUSE_THRESHOLD = 0.45
+    CENTER_TOL = 0.15 # ms
+    OVERLAP_TH = 0.20 # > x% segments
     DIA_MERGE_GAP = 0.25
-    MAX_SEGMENT_DURATION = 12.0
+    MAX_SEGMENT_DURATION = 6.5
     
     @staticmethod
     def get_word_center(word: WordTimestamp) -> float: