七年级生物下册4.3.1《呼吸道对空气的处理》怎样才能练就“好声音”素材(新版)新人教版.ppt

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怎样才能练就“好声音”,俗话说,“未见其人,先闻其声”,足以证明人类声音的重要性和独特性。发音对于脑的进化,人的社会行为和智力发育都不可小觑,同时也是其他任何动物都无法媲美的,它是神经系统和运动系统达到高度整合的结果。,人的发声器官在哪里?,喉,由5块喉软骨构成甲状软骨、环状软骨、会厌软骨和成对的杓状软骨。,说到人的发音器官,得先了解喉部的构造,声音如何才动听?,1、能量来源:呼出的气体。 力的大小不同,音调和音量就会出现差别。由呼吸调控的歌声才是美妙的,歌唱的原动力就是来自呼吸之间。,2、产生振动:声带的运动。 声音处于低音区时,声带振动比较缓慢,在唱假声时,声带会紧绷到极限,此时声带的振动会非常剧烈。,声音如何才动听?,3、具有共鸣的结构:共鸣是一种共振现象。,声音如何才动听?,头部共鸣腔,

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