There's sound but I turned it off. They just speak gibberish. This is one of those instances where I feel like it's important to try it so we can develop our own sort of personal rules and balance. We'll be immersed in this technology soon, whether we like it or not—unless we go the Luddite route and live in a an off-the-grid cabin in the woods. Sometimes that doesn't sound so bad to me. : )