19.3 定义调制参数——REAPER用户手册中文版

琴韵晓波

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19.3 Defining a Parameter for Modulation
19.3 定义调制参数

Parameter modulation can be used with track FX and/or take/item FX. Illustrated below is an example of the Parameter Modulation window with just the Enable parameter modulation and Audio control signal options enabled. The table below that explains the main settings, what they do and how they are used. We will then go on to work thru some examples to show you how parameter modulation can be used.
参数调制可用于轨道FX和/或片段/对象FX。下图是仅启用了“启用参数调制”和“音频控制信号”选项的参数调制窗口的示例。下表解释了主要设置、它们的用途以及它们的使用方式。然后,我们将通过一些例子向您展示如何使用参数调制。
Item Description
项目 说明
Enable parameter modulation, baseline value with Fader
“启用参数调制,基线值”及其推子
The checkbox enables/disables parameter modulation on this parameter. The fader sets a default value for the specified parameter that is to be modified. However, if an automation envelope exists for the same parameter then that envelope will determine the baseline and this setting will be ignored.
该复选框,启用/禁用对此项参数的参数调制。推子,为要修改的指定参数设置默认值。但是,如果同一参数存在自动化包络,则该包络将确定基线,并且此设置将被忽略。
Audio control signal
音频控制信号
Enables/disables control of the parameter by the audio signal in the specified Track audio channel.
启用/禁用指定“轨道音频通道”中的音频信号对参数的控制。
Track audio channel
轨道音频通道
This specifies which audio channel(s) - for example, 1/2 or 3/4 - contain the audio signal that is used to control the specified parameter. The selection of channels available will depend on how many channels have been previously defined for the track. In more straightforward applications, you will want to choose channels 1 + 2. This will ensure that the parameter is controlled by the audio signal on its own track. However, as you will see soon, you can choose a source other than channels 1 + 2 if you want an FX parameter on one track controlled by the audio signal from a different track. The latter case would be an example of sidechain parameter modulation.
这指定哪个或哪些音频通道,包含用于控制指定参数的音频信号,例如1/2或3/4。可用通道的选择,将取决于之前为轨道定义了多少通道。在更简单的应用中,您需要选择通道1+2。这将确保参数由其自身轨道上的音频信号控制。但是,正如您很快就会看到的,如果您希望一条轨道上的FX参数由来自另一条轨道的音频信号控制,则可以选择通道1+2以外的来源。后一种情况将是侧链参数调制的示例。
Attack and Release
启动和释放
These two factors determines the speed with which changes in the level of the incoming signal will be applied to the parameter. They work in a similar way to Attack and Release on a compressor. A higher attack setting will cause the parameter to respond more slowly to changes in volume in the source audio channel. A low release speed will cause the modulation to be adjusted rapidly as the volume then falls. A higher speed will hold the modulation for a longer period before doing so. Generally speaking, the higher the attack and the release settings the more gradual will be the parameter modulation response. The lower these settings, the more sensitive and immediate will be the response.
这两个因素决定了,将输入信号的电平改变应用在参数上的速度反应。它们的工作方式,与压缩器的启动和释放的方式相似。启动设置越大,参数对源音频通道中音量变化的速度反应就越慢。较低的释放速度反应将导致调制随着音量的下降而迅速做出调整。在这样做之前,较高的速度反应将在较长时间内保持调制。一般来说,启动和释放设置越高,参数调制响应就越平滑舒缓。这些设置越低,响应就越敏感、越即时。
Min Volume and Max Volume
最小音量和最大音量
These determine the range within which the signal on the track audio channel will be used to modify the FX parameter. For example, in the illustration shown, the parameter in question (chorus wet mix) on the track in question (track 4, Bouzouki) will only be controlled by the audio signal on channels 1 and 2 when its volume falls within the range - 24 dB to - 0.53 dB. If or when the signal is quieter than -24 dB or louder than - 0.53 dB the parameter modulation is in effect set to bypass.
这些参数确定轨道音频通道上的信号将用于修改FX参数的范围。例如,在所示的插图中,当通道1和2的音量落在-24分贝到-0.53分贝的范围内时,所讨论的轨道(轨道4,Bouzouki)上的参数(合唱湿声的混音),将仅由声道1和2上的音频信号控制。如果或当信号安静得低于-24dB,或大声得高于-0.53dB时,参数调制实际上处于旁通。
Strength and Direction
强度和方向
These determine the nature and the intensity of the relationship between the incoming audio signal and the parameter being controlled. For example, set to 100% positive as the incoming audio signal increases or decreases, then the parameter being controlled will also increase or decrease to the same degree. At 50%, the relationship will still be positive, but more moderate. You can think of this as being conceptually similar to a ratio control on a compressor. Likewise, a setting of 100% negative means that as the incoming audio signal increases, the parameter being controlled will decrease in the same proportion, and vice versa. At 50%, the relationship will still be negative, but more moderate. At 0%, the effect will be completely neutral.
这些决定了输入音频信号,和被控制参数之间关系的性质和强度。例如,当输入的音频信号增加或减少时,设置为100%正,则被控制的参数也将以相同的程度增加或减少。在50%,这一关系仍将是同向的,但更为温和。您可以认为这在概念上,类似于压缩器上的压缩比控制。设置为100%负,意味着随着输入的音频信号增加,被控制的参数将以相同的比例减小,反之亦然。在50%,这一关系仍将是反向的,但更为温和。在0%时,效果将完全为居中。
Audio Control Shaping Signal Graph
音频控制整形信号曲线图
This graphical control helps shape the behavior of the parameter that is being modified. For example, if the direction is set to positive, then pulling the small red handle (in the centre of the diagonal line) on the graph fully to the bottom right corner will result in more modest increases in the value of the parameter being modified. On the other hand, pulling the small red handle (in the centre of the diagonal line) on the graph fully to the top left corner will result in greater increases in the value of the parameter being modified.
此图形控件有助于塑造正在修改的参数的行为。例如,如果方向设置为正,将曲线图上的红色小手柄(在对角线的中心)完全拉到右下角,将导致正在修改的参数值增加幅度较小。另外,将曲线图上的红色小手柄(在对角线的中心)完全拉到左上角,将导致正在修改的参数值增加更多。
Don't worry, we'll work thru an example soon. The best way for you to understand how parameter modulation works is to try it out in practise. This first example will use several of the PM window controls. We will first select a parameter to be modulated, then set its baseline fader level, and then select the required audio control signal. Finally, we will define the relationship between the audio control signal and the parameter being modulated.
别担心,我们很快就会做一个例子。要了解参数调制的工作原理,最好的方法就是在实践中尝试。第一个示例将使用几个PM窗口控件。我们将首先选择一个要调制的参数,然后设置其基线推子电平,然后选择所需的音频控制信号。最后,我们将定义音频控制信号与被调制参数之间的关系。

琴韵晓波

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