080章 欺负(1 / 2)
梦醒细无声
第十个名字
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2021-07-01
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“师傅,我还是不太明白,为什么这些点都在舞台上。按说应该在音箱辐射区里才对啊,哪里的声音最大。”累了一天,董彩并没抱怨什么,在洪涛宣布下班之后,也没跟戴彩霞和刘蓓蓓一起跑掉,而是留下来继续提问。
“舞台上不是有返送音箱嘛……你不知道啥叫返送音箱?”洪涛正在记录均衡器上每个推子的位置,随口回答了一句。但是几秒钟之后,又觉得不对了,因为董彩没有接着往下问。
“是不是舞台地上那四个小音箱?原来我也见过,但是一直都没用过,它们是干嘛的?”董彩使劲点了点头,把她心中的疑惑说了出来。
“它们是专门给演唱者听的,所以你看,它们都是面向舞台内侧的。等以后你上去唱歌的时候就知道了,要是没有这几只返送音箱,音量大的时候,你根本找不到准确的音乐节奏,更听不到自己唱出来的效果。”洪涛停下趣÷阁站了起来,拉着董彩走到窗口,让她仔细观察台口的返送音箱和主音箱有什么不同。
“那我原来不用它,不是也能听到声音嘛……”董彩这个刨根问底的毛病放在日常生活里会很烦人,但是用在工作里很合适,至少洪涛不觉得烦。学东西就得这么学,不会就问,问明白了为止,否则老师也不是神仙,他很可能并不知道每个学生到底哪儿不会。
“要是场地比较小,可以不用返送音箱,依靠主音箱反射回来的声音就成。要是场地大了,比如这里,就不成了。也不是说不成,而是不专业。主音箱的声音打到对面再返回来是有时间差的,普通人唱歌本来就不在节奏上,差那么一点儿也没关系,但要是来了专业歌手,他们就会很不习惯,影响他们自己对演唱效果的把握。你知道为什么要弄四个返送音箱吗?其实两个就足够了,左右声道各一个。”学生爱学,当老师的就爱教,这一点洪涛无数次从父亲身上看到过。不管他多累,只要有学生来家里讨论学业方面的问题,他就能神采奕奕的聊很久,不吃不喝也不烦。现在自己也体会到这种滋味儿了,虽然吊着一只胳膊还感冒,累了一天身上很难受,但对董彩的问题依旧不会去糊弄。她问了一,自己必须给她从负一开始讲,一直讲到二为止。
“……是为了降低每只音箱的音量,避免引起正反馈吧?”董彩又把手指头塞进了嘴里,好像她的大脑全长在手指头上。
“嘿嘿嘿……回答完全正确,师傅请你去吃麦当劳吧,算是奖励!”董彩的回答有点出乎洪涛的意料之外,百分百正确!自己这个徒弟不错嘛,很有举一反三的潜质,值得表扬和鼓励。
“那我可不敢……您看下面……师傅您走吧,我孙姐等了好久了,屋子我打扫!”董彩没有接受领导的邀请,不过也没拒绝,而是冲着楼下努了努嘴儿,笑得很是暧昧。
“……嘿!你干嘛呢?学孟姜女当望夫石啊!”洪涛顺着董彩示意的方向一看,这才看见孙丽丽正脱了鞋坐在一个卡座里,把下巴杵在膝盖上,看着舞台捏呆呆发愣呢。
“……等你呗……能走了不?我都快饿晕了……”孙丽丽连姿势都没变,只是动了动嘴,声音软弱无力。
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