This lecture covers the perception of sound, room acoustics, and electroacoustics. It includes an introduction to physical acoustics, the auditory system, psychoacoustics, noise effects, wave theory, and geometrical room acoustics. Additionally, it explores electroacoustic systems, transducers, microphones, loudspeakers, and electroacoustic absorption techniques. The organization of the semester involves flipped lectures, delivery of materials in advance, class hours, exercises, and virtual visits to facilities for live experiments.