App inventor analog to digital audio

Dear experts, I ask for your help, I need to convert the sound from the microphone to digital in the app inventor, I spent a lot of time searching for information, but I did not find anything, I hope you can help with something. And yes, if I made a mistake in one word, do not judge strictly, I really do not know English😁

Sound Recorder ?

https://puravidaapps.com/snippets.php#2soundrecorder

Here an extension to get level sound…

https://groups.google.com/forum/#!topic/mitappinventortest/xOnKBdUS3xM