diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -42,3 +42,7 @@
 ## 0.4.1.1 -- 2021-07-06
 
 * Fourth version revised B. Fixed spelling and stylistic issues in the documentation. 
+
+## 0.4.2.0 -- 2021-07-08
+
+* Fourth version revised C. Added filtering possibilities and two generalized functions to the EspeakNG_IPA module.
diff --git a/EspeakNG_IPA.hs b/EspeakNG_IPA.hs
--- a/EspeakNG_IPA.hs
+++ b/EspeakNG_IPA.hs
@@ -20,31 +20,59 @@
 {-| Given a language 'String' supported by the espeak-ng or espeak (which one is installed properly, the espeak-ng
 is a preferred one) and the needed text returns the IPA representation. Is just some wrapper around the espeak functionality. -}
 espeakNG_IPA :: String -> String -> IO String
-espeakNG_IPA voice xs =
+espeakNG_IPA = espeakNG_IPA_G id
+{-# INLINE espeakNG_IPA #-}
+
+{-| Given a language 'String' supported by the espeak-ng or espeak (which one is installed properly, the espeak-ng
+is a preferred one) and the needed text returns the IPA representation filtered of the \'ˈ\' and \':\' characters.
+Is just some wrapper around the espeak functionality. -}
+espeakNG_IPA1 :: String -> String -> IO String
+espeakNG_IPA1 = espeakNG_IPA_G (filter (\x -> x /= 'ˈ' && x /= ':'))
+{-# INLINE espeakNG_IPA1 #-}
+
+{-| Given a language 'String' supported by the espeak-ng or espeak (which one is installed properly, the espeak-ng
+is a preferred one) and the needed text prints the IPA representation. Is just some wrapper around the espeak functionality. -}  
+espeakNG_IPA_ :: String -> String -> IO ()
+espeakNG_IPA_ = espeakNG_IPA_G_ id
+{-# INLINE espeakNG_IPA_ #-}
+
+{-| Given a language 'String' supported by the espeak-ng or espeak (which one is installed properly, the espeak-ng
+is a preferred one) and the needed text prints the IPA representation filtered of the \'ˈ\' and \':\' characters.
+Is just some wrapper around the espeak functionality. -}  
+espeakNG_IPA1_ :: String -> String -> IO ()
+espeakNG_IPA1_ = espeakNG_IPA_G_ (filter (\x -> x /= 'ˈ' && x /= ':'))
+{-# INLINE espeakNG_IPA1_ #-}
+
+{-| Given a conversion function that is applied to the resulting 'String' before it is returned, a language
+'String' supported by the espeak-ng or espeak (which one is installed properly, the espeak-ng
+is a preferred one) and the needed text returns the IPA representation. Is just some wrapper around the espeak functionality. -}
+espeakNG_IPA_G :: (String -> String) -> String -> String -> IO String
+espeakNG_IPA_G g voice xs =
  case showE "espeak-ng" of
    Just path -> readProcessWithExitCode path ("-xq":"--ipa":"-v":[voice]) xs >>=
      \(hcode,hout,herr) -> case hcode of
-        ExitSuccess -> return (unwords . lines $ hout)
-        _ -> error ("EspeakNG_IPA.espeakNG_IPA: " ++ show herr)
+        ExitSuccess -> return (g . unwords . lines $ hout)
+        _ -> error ("EspeakNG_IPA.espeakNG_IPA_G: " ++ show herr)
    _ -> case showE "espeak" of
           Just path2 -> readProcessWithExitCode path2 ("-xq":"--ipa":"-v":[voice]) xs >>=
             \(hcode,hout,herr) -> case hcode of
-               ExitSuccess -> return (unwords . lines $ hout)
-               _ -> error ("EspeakNG_IPA.espeakNG_IPA: " ++ show herr)
-          _ -> error ("EspeakNG_IPA.espeakNG_IPA: No espeak or espeak-ng executable is installed in the PATH directories. ")
+               ExitSuccess -> return (g . unwords . lines $ hout)
+               _ -> error ("EspeakNG_IPA.espeakNG_IPA_G: " ++ show herr)
+          _ -> error ("EspeakNG_IPA.espeakNG_IPA_G: No espeak or espeak-ng executable is installed in the PATH directories. ")          
 
-{-| Given a language 'String' supported by the espeak-ng or espeak (which one is installed properly, the espeak-ng
-is a preferred one) and the needed text prints the IPA representation. Is just some wrapper around the espeak functionality. -}  
-espeakNG_IPA_ :: String -> String -> IO ()
-espeakNG_IPA_ voice xs =
+{-| Given a conversion function that is applied to the resulting 'String' before it is printed, a language
+'String' supported by the espeak-ng or espeak (which one is installed properly, the espeak-ng
+is a preferred one) and the needed text prints the IPA representation. Is just some wrapper around the espeak functionality. -}
+espeakNG_IPA_G_ :: (String -> String) -> String -> String -> IO ()
+espeakNG_IPA_G_ g voice xs =
  case showE "espeak-ng" of
    Just path -> readProcessWithExitCode path ("-xq":"--ipa":"-v":[voice]) xs >>=
      \(hcode,hout,herr) -> case hcode of
-        ExitSuccess -> putStrLn (unwords . lines $ hout)
-        _ -> error ("EspeakNG_IPA.espeakNG_IPA_: " ++ show herr)
+        ExitSuccess -> putStrLn (g . unwords . lines $ hout)
+        _ -> error ("EspeakNG_IPA.espeakNG_IPA_G_: " ++ show herr)
    _ -> case showE "espeak" of
           Just path2 -> readProcessWithExitCode path2 ("-xq":"--ipa":"-v":[voice]) xs >>=
             \(hcode,hout,herr) -> case hcode of
-               ExitSuccess -> putStrLn (unwords . lines $ hout)
-               _ -> error ("EspeakNG_IPA.espeakNG_IPA_: " ++ show herr)
-          _ -> error ("EspeakNG_IPA.espeakNG_IPA_: No espeak or espeak-ng executable is installed in the PATH directories. ")
+               ExitSuccess -> putStrLn (g . unwords . lines $ hout)
+               _ -> error ("EspeakNG_IPA.espeakNG_IPA_G_: " ++ show herr)
+          _ -> error ("EspeakNG_IPA.espeakNG_IPA_G_: No espeak or espeak-ng executable is installed in the PATH directories. ")          
diff --git a/phonetic-languages-simplified-generalized-examples-array.cabal b/phonetic-languages-simplified-generalized-examples-array.cabal
--- a/phonetic-languages-simplified-generalized-examples-array.cabal
+++ b/phonetic-languages-simplified-generalized-examples-array.cabal
@@ -3,7 +3,7 @@
 -- http://haskell.org/cabal/users-guide/
 
 name:                phonetic-languages-simplified-generalized-examples-array
-version:             0.4.1.1
+version:             0.4.2.0
 synopsis:            Helps to create texts with the given phonetic properties (e. g. poetic).
 description:         Is rewritten from the modules of the @phonetic-languages-simplified-examples-array@ package. Can be used not only for Ukrainian, but also for other languages. 
 homepage:            https://hackage.haskell.org/package/phonetic-languages-simplified-generalized-examples-array