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Evaluation of Spatial Impression Comparing Surround with Height Channels for 3D Imagery

Three-dimensional (3D) imagery is now widely spreading as one of the next visual formats for Blu-ray or other future media. Since more audio channels are available with future media, the authors aim to find the suitable sound format for 3D imagery. Semantic Differential method using 24 attributes such as “presence”, “naturalness”, and “preference” was carried out comparing combinations of 3D and 2D imagery with 2 channel stereo, 5 channel surround and 7 channel surround sound (5 channel surround plus 2 height channels). Three factors (spatial factor, preference factor, and quality factor) were extracted from the results of Factor Analysis. Combination of the 3D imagery with the 7 channel surround gives higher scores at all the three factors.

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