论文部分内容阅读
在赛场、在舞台,大家经常会看到这样的现象,当一个重量级的明星出场时.全场会爆发出震耳欲聋的欢呼声.我们凭借欢呼声的大小就能判断出这位明星的受欢迎程度.根据这种情况,现在一些娱乐选秀、晋级之类的节目也利用现场观众的欢呼声给选手们打分,欢呼呐喊声大,分数高,反之分数则低(如图1),这个分数的显示有什么科学道理呢?我们都知道声音的大小(强弱)用响度来表示.当声音的大小明显不同时,我们通过听觉就能区别出来,比如低声细语和震耳欲聋,就反映出两种不同响度的声音来.如果声音的大小差别并不明显,例如蜜蜂和蚊子从身边飞过,谁振动发出的声音更响呢?这时就需要我们给声音的大小划分一个准确的等级来
In the arena, on the stage, we often see such a phenomenon, when a heavyweight star appearances, the audience broke out deafening cheers .We can judge the popularity of the star by the size of the cheers According to this situation, now some entertainment draft, promotion and the like programs also use the cheers of the audience to score the players cheering loud, high scores, whereas the scores are low (Figure 1), the score of What is the scientific principle? We all know that the size of a sound (strength) is expressed in loudness, and when sounds are significantly different in size, we can distinguish them by hearing, such as whispering and deafening, If the difference between the sound is not obvious, such as bees and mosquitoes flying from the side, who vibrates louder sound? At this time we need to size the sound to an accurate level to