看了看E-Channel的说明书 觉得这个就是个触发门限 和压缩还是扩展没关系~
其实5楼的大大已经给出了正确答案~
以下是说明书片断:
.................
Dynamics Sections Controls (top to bottom)
1. Compressor (white knobs)
a. The compressor’s Ratio/Slope can be set from 1 to infinity (limiter).
b. The Threshold is variably adjustable from +10 dB to -20 dB.
........
2. Expander/Gate (green knobs)
a. The expander’s Threshold is variable from -30 dB to +10 dB
........
Master Section Controls and Indicators
On the bottom right of the SSL E-Channel Strip are the master gain controls and level indicator.
1. Level Indicator Levels are expressed in dBFS, although all parameters are expressed as dBu.
2. INPUT and OUTPUT switches above the.......
.......
注意红色部分~~~
1. 无论是Compressor还是Expander模块都有独立的Threshold,而且调整范围不同
应该不是靠这个设置来区分是用Compressor还是用Expander~
2. 注意“Level Indicator Levels are expressed in dBFS, although all parameters are expressed as dBu.”这句
说的是指示表使用DBFS表示,但是参数都是用dBu描述的
这个“参数”我理解指的就是各个控件设置的参数 包括Threshold
dBFS满刻度是0dB ,不会有正值,但是dBu则可正可负
dBu书面上的解释为以0.775V为参考值的伏特dB数值(出自周小东《录音工程师手册》第6页,中国广播电视出版社)
这么讲的话如果输入电平低于0.775V,则dBu应为负值
小弟菜鸟一只 班门弄斧了 有错误请大大们及时指出~~
[ 本帖最后由 pstme 于 09-4-30 21:17 编辑 ]