SEEING SOUND

摘要

Audio engineers are pretty good at designing loudspeakers that reproduce the full audible frequency range, but generating a smooth output in all directions is a challenge. The problem is the result of a phenomenon called deconstructive interference in which overlapping sound waves cancel each other out, creating dead spots. In the past, engineers have been able to create a map of the sound output's spatial distribution by using microphones to make high-accuracy measurements, but these measurements must be made at many points within the 3D space.