明晰度（Objective Clarity） 指80ms以内到达的声能（包括直达声和早期反射声）与80ms以后到达声能之比的对数值。
导了混响时间、清晰度、明晰度和中心时间等音质参数的计算模型。
Different models of objective parameters, such as reverberation time, definition, clarity index and centre time are given.
更好地图像质量比规范明晰度电视、高明晰度电视地屏幕上也使照片更少，少含糊。
With much better picture quality than standard TV, HDTV's greater clarity also makes the pictures on screen less blurred and less fuzzy.
高明晰度电视更像是一个剧场，质量较常规电视具有最高地分辩率和最佳视觉质量在十分年夜地屏幕上。
HDTV is more like a theater in higher quality than conventional TV, having the highest resolution and best viewing quality on very large screens.
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