Experience Real Sound!

 

Mrs B pointed this one out to me. I don't know what to make of it. I think it refers to vinyl records and I suppose these do start with mechanical vibrations in a groove but these are then converted into an electrical signal. Is it analogue that they consider real? If we hear it as a sound, it is a real sound. Ultrasound is interesting. It really is a mechanical vibration but we often experience it in a visual form. So a cool advertising slogan and lots to think about!