Abstract
How we feel envelopment? For the evaluation of spatial impression, ``envelopment' is one of the key issues among several attributes of spatial impression. When the authors attempted to elicit common attributes from surround sound recordings by triadic elicitation procedure, three attributes, ``brightness', ``temporal separability', and ``spatial homogeneity of envelopment' were elicited. In this paper, authors focused on ``spatial homogeneity of envelopment' and considered related physical parameters such as IACC (Inter-aural Cross Correlation). From comparison between the result of subjective test and the data measured by a dummy-head facing toward different angles, the proposal method was defined as the IACC weighting of the 1/3 octave band level variation and its difference between frontal and rotated positions (0°, -30°, -15°, +15°, and +30°) of a dummy head.
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