Update app.py

app.py

@@ -635,6 +635,8 @@ def apply_glossary_tooltips(text):
 
     return html_output
     
+
+
 def synthesize_audio(text, language="English"):
     if not text.strip():
         return None
@@ -648,69 +650,19 @@ def synthesize_audio(text, language="English"):
             "german": "de",
             "hindi": "hi",
             "arabic": "ar",
-            "urdu": "ur",
-            "chinese": "zh",
-            "japanese": "ja"
+            "urdu": "ur"  # gTTS supports Urdu as 'ur'
         }
         
         # Get language code (default to English if not found)
         lang_code = lang_map.get(language.lower(), "en")
         
-        # Split text into chunks of 200 characters (gTTS limit)
-        chunk_size = 200
-        text_chunks = [text[i:i+chunk_size] for i in range(0, len(text), chunk_size)]
-        
-        audio_files = []
-        
-        # Generate audio for each chunk
-        for i, chunk in enumerate(text_chunks):
-            tts = gTTS(text=chunk, lang=lang_code, slow=False)
-            with tempfile.NamedTemporaryFile(suffix=f"_{i}.mp3", delete=False) as tmp_file:
-                chunk_path = tmp_file.name
-                tts.save(chunk_path)
-                audio_files.append(chunk_path)
+        # Generate speech with proper language handling
+        tts = gTTS(text=text[:200], lang=lang_code, slow=False)
         
-        # Combine all chunks into one audio file
-        with tempfile.NamedTemporaryFile(suffix="_combined.mp3", delete=False) as combined_file:
-            combined_path = combined_file.name
-            
-            # Use ffmpeg to concatenate audio files
-            if len(audio_files) > 1:
-                try:
-                    import subprocess
-                    # Create a file list for ffmpeg
-                    with open("file_list.txt", "w") as f:
-                        for file in audio_files:
-                            f.write(f"file '{file}'\n")
-                    
-                    # Concatenate using ffmpeg
-                    subprocess.run([
-                        "ffmpeg",
-                        "-f", "concat",
-                        "-safe", "0",
-                        "-i", "file_list.txt",
-                        "-c", "copy",
-                        combined_path
-                    ], check=True)
-                except Exception as e:
-                    print(f"Audio concatenation error: {e}")
-                    # Fallback to first chunk if concatenation fails
-                    combined_path = audio_files[0]
-            else:
-                combined_path = audio_files[0]
-            
-            # Clean up temporary files
-            for file in audio_files:
-                try:
-                    os.unlink(file)
-                except:
-                    pass
-            try:
-                os.unlink("file_list.txt")
-            except:
-                pass
-            
-            return combined_path
+        with tempfile.NamedTemporaryFile(suffix=".mp3", delete=False) as tmp_file:
+            tmp_path = tmp_file.name
+            tts.save(tmp_path)
+            return tmp_path
             
     except Exception as e:
         print(f"Audio synthesis error: {e}")