Noisy Voices - Diafanes

I can't hear your voice but I can see your lips move 
that's because we are missing the invisible 

All those things that I can't touch nor see 
Make me wonder what is this world I feel 
All those noises, and all those voices I can hear 
Are they real, as real as me? 

Are these machine voices as real as those in thoughts? 
Is the sound a mechanical power or a sensation? 

There are many things around me that I can't notice 
Limited senses show me this narrow part of truth