Latest development in modern measurement tools.
Wolfgang Ahnert, Stefan Feistel · The Journal of the Acoustical Society of America · 2010
Although personal computer-based and hardware-based acoustic measurement solutions are already available for decades, recently a new, significant development direction emerged. The abundant availability of computing power on personal computers and on mobile devices, such as cell phones, has enabled new ways of making and evaluating measurements. We introduce a set of new tools that exploit these possibilities. The spectrally selective accumulation filter provides a robust means to work in noisy measurement environments or with discontinuous excitation signals such as speech and music. Transferring measurement results to a handheld device, like the Apple iPhone, allows for walking through a venue and evaluating electro-acoustic and room acoustic quantities easily and at any position. Nowadays, software-based measurement tools also increasingly replace proprietary hardware-based solutions, such as for determining the absorption, transmission, and scattering properties of acoustic materials as well as for processing measurements taken in physical scale models.