Sound vibrations and how do they operate through thoughts?

Question - Gurudev, please talk about the sound vibrations and how do they operate through thoughts? Like how in meditation we take our Mantra.

Gurudev Sri Sri - It works. That is it. How it works, we do not know. See, nowadays there are sensors on different objects, and when you touch them, the light comes on. Just your touch can open the locks. Your telephone works by a simple touch of yours. Your laptop and iPad works this way as well. All this happens just with a touch, isn't that so? So, all the five senses - touch, smell, taste, sight, and sound, they are nothing but electromagnetic vibrations. Science can explain this very well.