Hey there Shrey,
I have no experience with the code or voice commands, but wonder if there's a way to use an Action Filter instead of a displayed Filter? If that's something that is worth looking into, actions are what control when a user clicks or hovers to control something on a viz. I'm wondering if there is just different code for passing the filter as an action instead of a filter that shows up. Let us know what you find out for sure, as this is very cool to see and read about!