All of us are aware of the importance of sound. We communicate with each other by sound and sound has various effects on us. Good musical sounds or sweet words please us and harsh words or jarring noises annoy us. The world of communication is built significantly on sound, and speech plays a significant role in our learning, interaction and working world. Yet there is another aspect of sound that merits special mention namely spiritual sound. Material sounds describe, name or indicate an object or person but such sound is not the person or object itself. But the special significance of...