DISPLAY SETUP  显示设备设置

THX has established a two step process for calculating the best viewing distance for 1080p HDTVs.

THX制定了一个两步法用于计算1080p高清电视的最佳观看距离。

Step 1: Measure the diagonal screen size  步骤一：测量屏幕的对角线尺寸
Step 2: Divide by .84  步骤二：除以0.84

For example, an HDTV display with a 65-inch screen divided by .84 equals a 77-inch viewing distance (6.5 feet).

举例说明，一台65英寸的HDTV除以0.84等于77英寸的观看距离（6.5英尺）。

The goal is to have a 40° or less viewing angle. This provides the greatest combination of visual impact with sharp detail.

要点是要有一个40度或小于40度的观看视角。这提供了最佳视觉效果与清晰细节的组合。

Make sure that each viewer has a clear site line to the display. Take care not to place the display too high on the wall. Viewers should not have to look up more than 15°.

确保每一位观看者到显示器有一个清晰的视线。要小心不要把显示器在墙上放置得过高。观看者不应该呈向上大于15度的视角。