43.05. History; 43.10. General; 43.15. Standards; 43.20. General linear acoustics; 43.25. Nonlinear acoustics; 43.28. Aeroacoustics and atmospheric sound; 43.30. Underwater sound; 43.35. Ultrasonics, quantum acoustics, and physical effects of sound; 43.38. Transduction, acoustical devices for the generation and reproduction of sound; 43.40. Structural acoustics and vibration; 43.50. Noise: its effects and control; 43.55. Architectural acoustics; 43.58. Acoustical measurements and instrumentation; 43.60. Acoustic signal processing; 43.64. Physiological acoustics; 43.66. Psychological acoustics; 43.70. Speech production; 43.71. Speech perception; 43.72. Speech processing and communication systems; 43.75. Music and musical instruments; 43.80. Bioacoustics.