Visualization of Multiple Listener Room Acoustic Equalization With the Sammon Map

In this paper, a new method, using the Sammon map, is proposed for visualizing room responses and room response equalization. Specifically, the map provides an important perspective on the formation of clusters of acoustic room responses when cluster validity measures are unable to clearly identify the number of clusters. Additionally, the Sammon map can also be used for displaying the uniformity of the equalized responses at multiple positions. Furthermore, the map does not impose significant computational requirements, when the number of measured responses is reasonably small, and hence can be readily implemented for analyzing multiple position (viz., multiple listener) room equalization performance