论文部分内容阅读
所谓混响时间是指声音停息以后,残留在环境里的声波渐渐减弱,当声功率下降到只有原先的百万分之一时,所经历的时间叫做混响时间,单位是s(秒)。例如浴室的四壁都是光滑的瓷砖,对声波的反射很强,嚷了一声后,声波在室内来来回回地反射,久久难以消逝,混响时间甚至能延续到10s左右,在这样的房间里交谈,很不容易听清楚对方的讲话;与此相反的是,在空旷的大草原上,周围无遮无挡,两人之间的交谈几乎都是直达声,反射声极少,声音虽然显得很轻,但十分清楚。商业电影院能容纳上千人,混响时间常在二三s左右,而家庭影院的环境空间很小,若是像前者一样
The so-called reverberation time is the sound of the rest, the sound waves remaining in the environment gradually weakened, when the sound power dropped to only the original one millionth, the time elapsed time called reverberation time, s (seconds). For example, the bathroom walls are smooth tiles, the sound reflection is very strong, after a shout, the sound waves in the room to reflect back and forth, a long time difficult to disappear, reverberation time can even be extended to about 10s, in such a room Conversation, it is not easy to hear each other’s speech; the other hand, in the open prairie, no block around the block, the conversation between the two almost always direct sound, reflections rarely, the sound though Looks very light, but very clear. Commercial cinema can accommodate thousands of people, often reverberation time twenty-three s, while the home theater environment is very small, if the same as the former