Stopping early when whispering

[thiswillbeyourgithub]

Hi, this is related to #27

Having lost my voice recently (shoutout to speech.sh I made quickly to speak today) I noticed than whispering to your app makes it stop early during my speech. I think this might be due to a low absolute volume threshold because otherwise the text is detected fine.

Hence, like in #27 I think it would be good to allow disabling / changing the silence threshold / timeout etc.

Thanks a lot!

[luisherranz]

I'm also having this issue. I'd rather always have to tap to end the recording.

[luisherranz]

It also stops when I stop to think for a while 😄