Ableton Live:隐藏在 10 个效果器中的 5 个「低调」选项

几天前我在玩儿 Ableton Live 里的 Saturator(润色) 效果器,一不小心在标题栏上点击了一下右键。然后发现自己发现了一个新的世界。。。一个我以前从没注意到的 High Quality(高品质)选项赫然出现。。。这让我有些吃惊,因为我以为我 Live 玩儿得已经很 6 了,为什么从来没有想过要在标题栏右键呢?

于是,我把 Live 的各种乐器、效果器都拉出来「右键」了一遍。居然发现有 10 个效果器的右键菜单里有我没发现过的「新功能」。

高品质设置

如我上面提到的,Saturator 有一个「高品质」设置,这个功能 Dynamic Tube(动态管)效果器和 Flanger (镶边)效果器也有!

Saturator(润色)效果器和 Dynamic Tube(动态管)效果器

选择「高品质」模式可以减少混叠失真(Aliasing),这可以提高声音品质,对于高频率的声音品质提高尤为显著。不过随之产生的是较高的 CPU 占用率。

saturator-dynamic-tube-high-quality-settings

Flanger(镶边)效果器

Flanger(镶边)效果器运用「高品质」模式可以得到较为明亮的声音,但 CPU 占用率会升高。

flanger-high-quality-settings

3 种延迟信号过渡模式:Repitch(变调模式)、Fade(淡出模式)、Jump(跳跃模式)

Live 的每一个延迟效果器(Filter Delay、Ping-Pong Delay 和 Simple Delay)都有这三个特色模式:Repitch(变调模式)、Fade(淡出模式)以及 Jump(跳跃模式)。在延迟效果器处理音频的过程中对 Delay Time(延迟时间)参数进行实时更改,将会使延迟湿声产生突然变化。这种变化产生的音效常常为制作人所利用。我们可以在这三种延迟信号过渡模式间进行切换,来得到我们想要的音响效果。

这三种延迟信号过渡模式可以在延迟效果器的标题栏点击右键进行选择。

delay-modes-ableton-live

Repitch(变调)模式将会在我们实时改变 Delay Time(延迟时间)的时候产生类似于以往硬件延迟效果器产生的移调的效果。

Fade(淡出)模式是系统默认模式。此模式在当前和上一个「延迟时间」的值之间平滑过渡,产生的效果像是不同的「延迟时间」值产生的延迟效果被安全地拉长或压缩了。

Jump(跳跃)模式是 Live 8 及更早的版本的唯一默认模式。当打开 Live 8 或 更早版本的工程文件时,系统将自动选择为 Jump 模式。

Oversampling(双重采样)

很多人都知道 Live 的 EQ8 均衡器里有一个 Oversampling 的选项。但很多人都不知道 Live 里已经「盛誉加身」的 Glue Compressor(「胶水」压缩器)也有这个选项。

开启 Oversampling 模式能使 Glue Compressor 或 EQ8 的音频处理速率提高到当前音频采样率的两倍。这样做可以减少混叠失真、提高瞬时信号处理精度。开启 Oversampling 模式会少量增加 CPU 占用率。

glue-compress-eq8-oversampling

Flat Response (平坦响应)

Live 的 EQ3 也有一个有趣的隐藏特性叫做「Flat Response(平坦响应)」。选择 Flat Response 模式可以减小 EQ3 滤波器在两个频率交叉点处的增益效果。我在不同的音频轨道上试验过「平坦响应」模式的效果,发现在此模式下,频率交叉点处的增益比正常模式减小了 0.5 到 1 dB。

EQ3 滤波器用 Ableton 自己的话来说是「以优秀强大的模拟滤波器而不是数字滤波器为目标进行优化设计」的。这就意味着甚至在增益值为 0 时,滤波器也会产生适量的令人舒适的「声音染色」效果。

如果我们不想要这种「模拟」味道的「染色」效果,可以打开 Flat Response(平坦响应)模式并把滤波器坡度设置为较平缓的「24 dB」。这样就能把「染色」效果基本消去了。

eq3-flat-response

混响的全局精度设置

Live 强大的混响效果器里有个全局精度设置。「Eco」模式使用相对最少的 CPU 资源,而「High」模式使用最多的 CPU 资源,但产生最丰富、精度最高的混响效果。

在编曲阶段可以采用较低的混响精度以节省系统资源,但在导出时一定要记得把混响精度设置为「High」。

reverb-global-quality

本文由 Soundmono 编译自 askaudio

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