Definition and background:
The science of sound including its production, transmission and effects; also, the physics behind music, and the science treating the laws of sound. (1) the science relating to the creation and dissipation of sound waves (2) the way in which sound productions affected by the physical properties of the room or chamber in which they are produced
The science of Sound. Its production, transmission and effects.
The science of sound.
For more information on the music term "Acoustics" check out these other resources:
Wikipedia - Glossary of Musical Terminology
Virginia Tech Multimedia Music Dictionary
ORB -- Medieval Music Glossary