Crooked to the Millimetre
Fun stuff! Master masons would &#x27;tune&#x27; walls to specific applications (more load, better aesthetics Etc, and  this can make that possible by non-masters. But more interesting to me is that places that previously were too cost sensitive to afford clever masonry might benefit.<p>The canonical example in California are acoustic &quot;freeway walls&quot; which are block walls that line the freeways as a mechanism for minimizing noise in the surrounding neighborhoods. The &quot;simple&quot; way these are build tends to just reflect the noise somewhere else, and has some really interesting effects with low clouds.<p>If on the other hand you could mathematically design an audio &#x27;notch&#x27; filter out of the walls using a precise set of openings that would absorb sound and dissipate its energy into the wall, you could create much more effective sound walls. And if you could do this so that anyone working on the wall has a good chance of successfully laying out the wall correctly, then you could apply it to the miles and miles of walls that Caltrans builds every year. That would be pretty neat.