“What would it mean for your business if you could target potential clients who are actively discussing their need for your services in their day-to-day conversations? No, it's not a Black Mirror episode—it's Voice Data, and CMG has the capabilities to use it to your business advantage.”
Of course this is possible. Is it practical? Nope. There is already so much data harvested by the likes you Google and Facebook that they can tell what you like, what videos or articles you read, what you share, in some cases who you talk to. Importing a shit ton of audio data is pointless, they already know what you like.