The frequency at 727 Hz is one of the known Rife frequencies that have been researched in the last century. Dr. Raymond Rife was able to destroy viruses, bacteria and other foreign pathogens by means of special frequencies.
He applied electromagnetic fields. Later this research was continued, but also with audio frequencies.
This frequency can be found in the list of "all healing" frequencies by Dr. Raymond Rife. This list should be applied with the necessary scepticism. This healing frequency is a complementary procedure which should only be used to support your own vitality. Drink plenty of water. Listen to the session with headphones only.