Voice Interface prototyping without the need to "click" or "hold" a microphone button [closed]

I want to do prototype a voice interface. Adobe XD would be the perfect fit because you can use specific phrases to trigger elements and also play speech really easy. Unfortunately you need to hold your finger on the screen to "activate" the microphone when I view the screens on my phone. Is there a specific tool that offers a "always listening" function, while the prototype is opened? I can't believe it is that hard to find something, Protopie for example only offers the option to listen to general sound, not specific voice commands.