Pre-eminent among writers of mystery stories is, in my opinion, Dorothy L. Sayers. She is ingenious, witty, original – and scientific too, including themes like the fourth dimension, electroplating, and the acoustics of bells in some of her best stories. She is also the inventor of the voice-activated lock, which her hero Lord Wimsey deploys in the 1928 short story ‘The Adventurous Exploit of the Cave of Ali Baba’.
Noise barriers are not regarded with a great deal of affection. In fact, they’re not much regarded at all; perhaps not surprising, given that the goal of their installers is to ensure that those who benefit notice neither the barrier nor the noise sources it hides. The majority are basic workmanlike structures, built according to tried and trusted principles.