17.5 侧链和音频闪避——REAPER用户手册中文版

琴韵晓波

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17.5 Sidechaining and Audio Ducking
17.5 侧链和音频闪避

The next example will show you how to use a technique known as sidechaining to create a ducking effect. Put simply, this describes what happens when a compressor is used to ensure that the volume on one track is automatically lowered whenever the volume on another track is raised.
下一个例子将向您展示如何使用一种称为侧链的技术来创建一种称为闪避的效果。简单地说,这描述了当设置压缩器以确保一个轨道上的音量在另一个轨道上的音量升高时自动降低时所发生的情况。
You might want to do this, for example, when working with a kick and a bass. In this example, we’ll use the Bouzouki, Guitar and Vocal tracks in our sample project to show you how it’s done. We will use audio ducking to ensure that the overall volume of the instruments is automatically lowered a little whenever there is a signal on the Vocal track. This helps lift the vocal track slightly above the mix. In order to do this, we use multi channel routing in conjunction with the ReaComp compressor. The diagram below shows how we can do this.
例如,当使用底鼓和贝斯时,您可能想要这样做。在这个例子中,我们将在我们的示例工程中使用Bouzouki、Guitar和Vocal轨道来向您展示它是如何做到的。我们将使用音频闪避,以确保只要人声轨道上有信号,乐器的总音量就会自动降低一点。这有助于将人声轨道稍稍提升到混音之上。为了做到这一点,我们将多通道路由与ReaComp压缩器结合使用。下图显示了我们如何做到这一点。
Example
示例
1. Open the project All Through The Night.RPP and save it as All Through The Night DUCK.RPP.
1.打开工程All Through the Night.RPP,并将其另存为All Through The Night DUCK.RPP。
2. Delete any tracks other than Gtr Body, Gtr Neck, Vox and Bouzouki. Make sure the track order is Vox Track 1, Gtr Body Track 2, Gtr Neck Track 3 and Bouzouki Track 4. Adjust the volume and pan faders as you see fit.
2.删除除Gtr Body、Gtr Neck、Vox和Bouzouki以外的任何轨道。确保轨道顺序为Vox是轨道1、Gtr Body是轨道2、Gtr Neck是轨道3和Bouzouki是轨道4。根据需要调整音量和声像推子。
3. In the TCP, select the Vox track and press Ctrl T to insert a new track after this. Name this Instrument Submix.
3.在TCP中,选择Vox轨道,然后按Ctrl+T键插入新轨道。将这条新轨道命名为“Instrument SubMix”。
4. Click on this track’s Folder icon to make this track a folder. Make the Bouzouki the last track in the folder.
4.单击此轨道的文件夹图标,将此轨道设为文件夹。使Bouzouki成为文件夹中的最后一条轨道。
5. To add two more channels to the Instrument Submix to allow it to receive a sidechain signal from the Vox, right click on the Volume fader for this track and set the number of channels to four.
5.向Instrument Submix再添加两个通道,使其能够接收来自Vox的侧链信号,请右键单击该轨道的音量推子,并将通道数量设置为四。
6. Next, display the FX window for the Instrument Submix track. Add the plug-in VST: ReaComp (Cockos).
6.接下来,显示Instrument Submix轨道的FX窗口。添加插件VST: ReaComp(Cockos)。
7. Now for the clever bit. We could add channels 3 and 4 to the Instrument Submix manually, as in the last example. We could also manually route an audio signal from the Vox track to the Instrument Submix, but REAPER provides us with a handy shortcut.
7.现在是最巧妙的部分。我们可以手动将通道3和4添加到Instrument Submix中,如上一个示例所示。我们也可以手动将音频信号从Vox轨道路由到Instrument Submix,但REAPER为我们提供了一个方便的快捷方式。
8. Drag ands drop from the Vox track routing button to inside the ReaComp window. The routing control window that is automatically opened shows that this has been done.
8.从Vox轨道路由按钮拖放到ReaComp窗口内。自动打开的路由控制窗口显示已完成此操作。
9. This plug-in includes a setting called Detector input. This is where we tell REAPER that we want the Vox level, not the Bouzouki level to control when the compressor kicks in. This Detector input offers two main choices - Main Input and Auxiliary Input.
9.此插件包含一个名为“Detector input(检测器输入)”的设置。这就是我们告诉REAPER,我们想让Vox电平,而不是Bouzouki电平来控制压缩器何时启动的地方。该“检测器输入”提供两个主要选择——“Main Input(主输入)”和“Auxiliary Input(辅助输入)”。
10. Display the Detector Input drop down list. Select Auxiliary Input L + R so that that the compression applied to the instrument mix will be controlled by the volume of the signal from the vox track on channels 3/4. When this exceeds the threshold, the instrument mix will be compressed.
10.显示“检测器输入”的下拉列表,并选择“Auxiliary Input L + R(辅助输入L+R)”。这确保了压缩将根据来自通道3/4上的VOX轨道信号的音量(强度)的变化应用到乐器混音。当VOX音量超过阈值设置时,乐器混音将被压缩。
11. Now play the song. Adjust the Threshold (first vertical fader) downward, so that during Vocal passages the VU meter peaks above the fader level.
11.现在播放这首歌。向下调整阈值(第一个垂直滑块),以便在人声通道中VU表的峰值高于推子电平。
12. Slide the Ratio fader right until you are satisfied with the overall reduction on the Instruments, probably be somewhere between 2:1 and 4:1. Observe the flashing red bar to the left of the Output mix VU. This shows how much reduction is being applied to the submix.
12.向右滑动压缩比滑块,直到您对乐器的整体音量降低感到满意,可能在2:1到4:1之间。观察输出混合VU左侧闪烁的红色条。这显示了对次级混音应用了多少减少量。
13. Save the file. Notice what is happening here: the volume signal from one track (the vocal) is triggering the compressor on the instruments folder.
13.保存文件。注意这里发生的事情: 一条轨道(人声)的音量信号正在触发instruments(乐器)文件夹上的压缩器。
Shown below are possible compressor settings that might be appropriate in this case. The trick is not to overdo the compression, but to have it just lower the peaks of instrument mix a little to make room for the vocal. This same technique can be applied to other REAPER plug-ins that support sidechaining, including ReaGate and several JS plugins, such as Major Tom Compressor and Express Bus Compressor.
下面显示的是可能适用于这种情况的压缩器设置。诀窍是不要过度压缩,而是让它稍微降低乐器混音的峰值,为人声腾出空间。同样的技术也可以应用于其他支持侧链的REAPER插件,包括ReaGate和几个JS插件,如Major Tom Compressor和Express Bus Compressor。

琴韵晓波

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