Silence Is a Sound !

The statement "silence is a sound" may look strange but could be understood well in the light of the facts cited below. The sound is associated with the faculty of hearing under our sensory system and is produced due to vibrations of molecules in the atmosphere. These vibrations are known as waves and a wave always has a definite frequency, wavelength and amplitude. Our brain is embedded with the necessary neurons capable of intercepting and analyzing the sound waves received through the ears. The sensation of hearing is interpreted by our brain as a pleasant or unpleasant sound or the music or a noise. The irregular sound waves produce noise whereas the regular and rhythmic waves produce the music. The sound waves travel at a speed of 375 yards per second in still air at 60^oC. The levels of the sound or voice are expressed in decibels (db). The decibel is a unit of sound pressure levels. Our ordinary conversation has a sound level of 60 to 70 db. The level of sound generated by heavy traffic is around 90 db and that of a jet engine could be around 150 db.

The higher is the amplitude of the sound wave the higher would be the decibel level. The sub-audible sound has very low amplitude. The ultrasound could be called an inaudible sound current or silence. The silence is beyond the sensitivity of our hearing apparatus or ears, hence inaudible. One could experience the silence as a sound through deeper incite into ones brain with eyes closed. The alpha state of our mind is the state when our mind is empowered to intercept the silence. The silence is subtle, serene and blissful.