wood to match them in terms of their acoustic properties that me shouting stuff might sound sensors measure the vibrations of the wood and replicate them once. the researchers tested thirty different types of wood with unexpected results. because honestly last time we were especially surprised by the. zoltan ashen alderwood on bob and i fortunately because of the fungal disease that causes ash tree die back ashwood is no longer available on a wide scale but just as surprising was the alderwood where we saw a tremendous improvement in acoustic properties and it's also readily available it would for us the treatment didn't just change the sound of the wood it also made the light alderwood noticeably darker. n.t.i. how we produced instruments that we tested in a low noise environment and could clearly show that the finished instruments have