there is a device which claims to improve sonics by injecting a combination RF and infrasound into the listening environment, It is possible that standing waves could be created in large rooms, and that these could possibly affect the rendition of sound at the listening position. Another possibility is that the frequencies could affect the physiology of the listener in some manner.
It is difficult to fathom how the injection of RF could be of any benefit, and it is probably a chimera added for marketing purposes.