Spatially averaged curve families reveal audible resonances hidden in single measurements

Evidence

Being able to see families of full-bandwidth, high-resolution frequency response curves in a single presentation was a huge advantage. It allowed one to visually recognize patterns in the collection providing insights into how physical performance attributes related to subjective perceptions. Spatial averaging of multiple curves allowed for the visual separation of relatively innocent acoustical interference effects from those associated with easily audible resonances. A single curve is insufficient information. — Toole, Floyd E, Sound reproduction- the acoustics and…, 171