Update app.py

app.py

@@ -61,7 +61,7 @@ async def paragraph_to_speech(text, voice, rate, pitch):
     for part in parts:
         if (re.search(r'-?\d+', part)):   #if there are any digit following the voice tag, eg 1F20 or 1F-20 
             match = re.search(r'-?\d+', part)
-            pitch = match.group()         #Set pitch to set value as noted in the tag
+            pitch = int(match.group())         #Set pitch to set value as noted in the tag
             # Remove only the first integer found
             part = re.sub(r'-?\d+', '', part, count=1).strip()  #cut out the pitch int from text part