Soft Knee (Compression)

最新推荐文章于 2023-07-13 15:30:08 发布

转载最新推荐文章于 2023-07-13 15:30:08 发布 · 729 阅读

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#soft-knee compress #hard-knee compress #audio processing

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本文深入探讨了软膝压缩的概念，这是一种渐进式的压缩方法，其特性在于在信号达到阈值之前逐步进入压缩状态，避免了高比例压缩可能导致的听觉不适。通过逐步提升压缩比率，确保信号增益在超过阈值时达到全压缩比率，实现更平滑的音量调整，减少突变带来的听感干扰。

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A type of compression where the onset of compression is gradual. In normal or hard knee compression when the signal reaches the threshold the unit immediately begins to compress at whatever ratio is set. In some situations the compression becomes very easy to hear (which is often not desirable) as the signal amplitude moves above and below the threshold. This is usually made worse when using high compression ratios. The solution is to have the compressor gradually enter into compression at a lower ratio prior to the signal reaching the threshold. The ratio is gradually ramped up as the signal gets louder until, at some point beyond the threshold, the full compression ratio is reached. This slower onset often makes the compression much more difficult to detect. The process is called “soft knee” because of how the compression ratio looks when plotted on a graph. In normal compression the knee (which is the point where compression begins) is an abrupt angle (how steep depends on the ratio) whereas in soft knee it is more of a curve.