On Line Analysis of Subjective Preference Data
H. S. Magnuski, Gerhard Martin Sessler, Jim West · The Journal of the Acoustical Society of America · 1967
The preference data described in the previous abstract was analyzed through use of an on-line graphical display. The Graphic 2 console, consisting of a small computer and associated display processor, was programmed to permit the rotation of a three dimensional space and projection of labeled points in this space onto a two-dimensional surface. The coordinate perpendicular to the display surface was represented by the size of the point. By use of a keyboard connected to the computer, the user can intensify the brightness of selected groups of points for independent study. The method permits quick evaluation of three-dimensional data. The first application of this program was the study of results relating bandwidth and reverberation time to speech quality. Results obtained by this method will be demonstrated.