Update app.py

app.py

@@ -839,11 +839,12 @@ def format_output_word(word_text: str, similarity_score: float, detected_phoneme
     return output_text, colored_text
 
 @app.post("/api/transcribe")
-async def transcribe(audio: UploadFile = File(...)):
+async def transcribe(audio: UploadFile = File(...), similarity_threshold: float = Form(0.4)):
     log("=== STARTING WHISPERX ENGLISH-ONLY PHONEME ANALYSIS ===")
     
-    # Fixed similarity threshold
-    similarity = 0.8
+    # Use similarity threshold from frontend (default 0.4)
+    similarity = max(0.0, min(1.0, similarity_threshold))  # Clamp between 0 and 1
+    log(f"Using similarity threshold: {similarity:.2f}")
     
     try:
         # Load WhisperX models if needed