开关控制信息(Switch Controller)最常用的其实只有一种,就是编号为64的“延音踏板”(Sustain)。大家都知道钢琴的“延音踏板”吧?踩下去以后钢琴的制音器就会离开琴弦,手指离开键盘以后声音还会继续,这个“踩下去”的动作,就用数值0来控制,那么数值127呢,当然就是放开踏板了。只有两个数值可用,所以称作“开关”。以上说了那么多,总括起来主要是“声音信息”和“控制信息”两大类,作用就是告 There is actually only one of the most commonly used Switch Controllers, “Numbering 64” Sustain. We all know the piano “sustain pedal ” right? After the piano damper will leave the strings, the fingers left the keyboard after the sound will continue, the “step on ” action, the value 0 to control, then the value of 127 it, of course, is to let go of the pedal. Only two values ​​are available, so called “switch ”. The above said so much, summed up mainly “sound information” and “control information” two categories, the role is to report