Nada Yoga is a branch of Yoga in which transformation is brought through the Shabd or Nada. The nearest translation of Shabd and Nadais sound or vibration. But Shabd or Nada are not the same as sound because they can be produced either by striking two objects known as Ahata sound or without striking two objects which is called Anahata sound. Anahata sound can be heard at the Anahata or heart chakra. Nada has the same place in Yoga as energy has in science.