Ethan Winer has, at various times, earned a living as a professional musician, computer programmer, circuit designer, recording engineer, composer/arranger, technical writer, acoustician, and college instructor. Ethan has more than 200 feature articles published in various computer and audio magazines, and his Cello Rondo music video has received nearly two million views on YouTube and other websites. He's produced dozens of educational and music videos and composed four pieces for full orchestra, all of which have been performed publicly. Ethan is currently a principal at RealTraps Acoustics, a leading manufacturer of acoustic treatment.

Michael Lawrence is a live sound engineer who specializes in designing and tuning sound systems and has published more than 50 technical articles as well as a full-length book on the topic. He has also published research on sound level measurement and sound exposure at live events, and he serves as technical editor for multiple pro audio publications, including the previous edition of The Audio Expert.

Part 1: Audio Defined 1. Audio Basics 2. Audio Fidelity, Measurements, and Myths 3. Hearing, Perception, and Artifact Audibility 4. Gozintas and Gozoutas Part 2: Analog and Digital Recording, Processing, and Methods 5. Mixers, Buses, Routing, and Summing 6. Recording Devices and Methods 7. Mixing Devices and Methods 8. Digital Audio Basics 9. Dynamics Processors 10. Frequency Processors 11. Time Domain Processors 12. Pitch and Time Manipulation Processors 13. Other Audio Processors 14. Synthesizers Part 3: Transducers 15. Microphones and Pickups 16. Loudspeakers and Earphones Part 4: Room Acoustics, Treatment, and Monitoring 17. Acoustic Basics 18. Room Shapes, Modes, and Isolation 19. Acoustic Treatment 20. Room Measuring Part 5: Electronics 21. Basic Electronics in 60 Minutes 22. Test Procedures Part 6: Musical Instruments 23. Musical Instruments