This week’s quiz is from Engineering silence and clarity: A practical guide to building acoustics. In today’s high-performance buildings, acoustics are no longer treated as an afterthought reserved for theaters or concert halls. From offices and schools to healthcare facilities and multi-family housing, managing noise, vibration, and reverberation is essential. As buildings become denser and more energy efficient, designers are turning to smarter acoustic strategies—from sound-absorbing materials to vibration isolation and high-performance assemblies—to create healthier indoor environments. But how much do you know about the science of sound in buildings and the design strategies shaping modern acoustic performance? Test your knowledge.