Thank you for the update. I still have no microphone array but some time to get back to voice2json 
The recognition of my voice is not so good. I still have not trained because I still have no microphone for my raspi (Tasker only). Here comes the quesions: Which microphone can you recommend ? I thing I need an usb microphone since I googled the "respeaker 2 mic pi hats" (you recommended before) is mounted / connected by the GPIO what I think will be a problem with my cooling solution. The other question: What if my gf will try speech recognition when trained to my voice ? Will this work or will I get thrown something to my head after the recognition fails always ?
EDIT: Another thing. I am to dumb for getting how the training works. I start it with: msg.payload = "train"
well... and then ? Normally I know similar software that expects me to read given text and wants voice sample with that text. - hmmmpf, but this one seems to work elsehow.
