The effect of the speakers of the height direction in a 3-D imagery focused on the spatial depth were studied and conducted. The first experiment was carried out using a method of magnitude estimation asking how near or far the combination of perceived visual and auditory event is. In the second experiment, the subjects were asked to rate on suitability of the sound to the image using the same materials as the previous experiment. The results show that 7ch and 5ch surround were felt closely and 2ch stereo was felt far under the condition that there is no image. Regarding suitability of sound to an image, 3-D imagery with 7ch surround gives higher score in the near distance.
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