For vision, the judgment of “dark surface–bright surface” demonstrates a high value. This suggests that surface darkness–brightness is a low-level perception of a material properties characteristic. In addition, “heavy–light” and “new–old” also had high values. However, “surface clarity” and “surface glossiness,” which are thought to reflect low-level perceptions of material properties characteristics, had values lower than for “surface brightness.”
Overall, the IPC values were not high for audition. However, the values for “dull sound–sharp sound,” “dampened sound–ringing sound,” and “mixed sound–pure sound” were high; these descriptors are thought to reflect low-level perceptions of material