Mixer as the mentioned, many people will feel mysterious about it, because of the most people will be bluffed by its densed buttons, in fact,the mixer won't be thought actually so terrible to the people, the mixer is the heart of a sound system, how's the blood circulation in heart, it directly affect the stability of the whole system. Blood is liquid, water is liquid as well, these two substances are equally important, a Chinese ancient idiom said:The great way is just like water... which means the development of everything is regular, like water in the river, endless, never dryout... Here I'm going to describe the qualities of water to the mixer. Mixer is just like a big water tank, we have a variety of audio signals like water enter into the big pool, and then in a pool of water flowing in a variety of reasonable processing,then, flowed from various channels, the whole process is so simple. But in the process of modern multimedia teaching, there are many abrupt fault to make many teachers or tuners felt tricky, it is sometimes hard to find the solution to the problem in a short time and way, delayed the normal teaching and performance. Let me aim at several parts of some easily appeared fault to carry out a sys-tematic explanation.%提起调音台，许多人会对它感到神秘，因为大部分人会被它密密麻麻的按钮唬住，其实调音台没有大家认为的那么可怕，调音台就是一个音响系统的心脏，这个心脏血液循环的如何，直接影响到整个系统的稳定性。血为液体，水也是液体，这两种物质同样重要，中国古人曰：大道似水……意思是一切事物的发展都是有规律的，要像水一样的顺流而下，生生不息，永不干枯……在这里我也引用水的这一特质来对调音台进行描述。调音台就像一个大的水处理池，我们把多种音源信号像流水一样输入进这个大水池，然后在水池内对流入的各种水进行合理的处理，最后再从各种不同渠道流出去，整个过程就是这么简单。但是在现代多媒体教学过程中，有许多突发故障让许多老师或者调音师感到棘手，有时候很难在短时间内找出解决问题的办法和途径，耽误了正常的教学和演出。下面我就针对的几个部分和容易出现的一些故障对进行一个系统的阐述。
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