زیرشاخه های علم آکوستیک
1.43.20.+f: General linear acoustics
2. 25.+x: Nonlinear acoustics
3. 28.+g: Aeroacoustics and atmospheric sound
4.43.30.-k: Underwater sound
5. 35.+c: Ultrasonics, quantum acoustics, and physical effects of sound
6. 38.+p: Transduction; acoustical devices for the generation and reproduction of sound
7.43.40.-r: Structural acoustics and vibration
8.43.50.-x: Noise: its effects and control
9. 55.-n: Architectural acoustics
10. 58.-e: Acoustical measurements and instrumentation
11.43.60.-c: Acoustic signal processing
12. 64.-q: Physiological acoustics
13. 66.-x: Psychological acoustics
14.43.70.-h: Speech production
15. 71.-k: Speech perception
16. 72.-p: Speech processing and communication systems
17. 75.-z: Music and musical instruments
18.43.80.-n: Bioacoustics
19.43.90+v: Other topics in acoustics (restricted to new topics in section 43)