UPDATED! I. VIBRATIONS, WAVES, AND SOUNDS.  1. What is Sound?  2. Vibrating Systems.  3. Waves.  4. Resonance. II. PERCEPTION AND MEASUREMENT OF SOUND.  5. Hearing.  6. Sound Pressure, Power, and Loudness.  7. Pitch and Timbre.  8. Combination Tones and Harmony.  9. Musical Scales and Temperament. III. MUSICAL INSTRUMENTS. 10. String Instruments. 11. Brass Instruments. 12. Woodwind Instruments. 13. Percussion Instruments. 14. Keyboard Instruments. IV. THE HUMAN VOICE. 15. Speech Production. 16. Speech Recognition, Analysis, and Synthesis. 17. Singing. REVISED! V. ELECTROACOUSTICS. 18. Electronic Circuits. 19. Loudspeakers. 20. Microphones, Amplifiers, and Tuners. 21. Digital Circuits and Techniques. 22. Sound Recording. REVISED! VI. ROOM ACOUSTICS. 23. Auditorium Acoustics. 24. Electronic Reinforcement of Sound. 25. Small Rooms, Home Listening Rooms and Recording Studios. NEW! VII. ELECTRONIC AND COMPUTER MUSIC. 26. Music Technology and its Origins. 27. Analog Electronic Music. 28. Digital Audio and Processing. 29. Computer Music and Virtual Acoustics. REVISED! VIII. ENVIRONMENTAL SOUND. 30. Noise in the Environment. 31. Effects of Noise on People. 32. Control of Noise.