Individual #acoustics__acoustic  the study of the physical properties of sound
  >part of:  physics__physic__physical_science__natural_philosophy__naturalphilosophy  the science of matter and energy and their interactions
  >part:  harmonics__harmonic  the study of musical sound
  >part:  phonetics__phonetic  the branch of acoustics concerned with speech processes including its production and perception and acoustic analysis

No statement uses or specializes acoustics; click here to add one.