Assembled in this volume are the presentations of IGNCA seminar exploring the various complex conceptual dimensions of sound, ranging from its mystical and traditionally metaphysical to its present-day developments, from its perceptions in indigenous musical theory to its futuristic applications. With focus around five thematic areas of the seminar: (a) Sound as the Source of Creation and Sources of Sound, (b) Sound and the Senses, (c) Sound and Space, (d) Sound and Time, and (e) Symbols of Sound and Sonic Designs, the contributors open up the possibilities of interaction among different disciplines involved in the study of dhvani-phenomenon.