Ancient science of sound
Why? Slowly it began to be realized that the sound produced by the chanting of ”Aum” has a unique purifying effect. There are certain sounds which have a purifying effect, and there are others which contaminate. Some particular sounds act as deterrents for diseases, and there are others which invite disease. The whole science of sound, however, is lost. Just forty years ago there lived a recluse in Varanasi called Vishuddhananda. He gave hundreds of demonstrations to prove that through some special sound it is possible to kill somebody. This sadhu used to sit under a dome in a temple. For the first time, in the presence of three doctors from England, an experiment was carried out. The doctors took a sparrow into the temple with them. Vishuddhananda made certain sounds: the sparrow fluttered about for a while and then fell dead. The doctors examined it and pronounced it dead. Then Vishuddhananda made some other sounds: he sparrow came back to life and began fluttering about again. Then it was realized for the first time that the impact of sound can produce specific effects.