![]() ![]() ![]() As the input drops back down below the threshold, the compressor disengages (according to its release time). As the input exceeds the threshold, the compressor kicks in (with its given attack time). What is the threshold of a compressor? The threshold of a compressor is a set amplitude limit that dictates when the compressor will engage and disengage. By how much should the “loudest parts” be attenuated?Ī compressor answers these questions with the threshold and ratio parameters, respectively.In order to attenuate the “loudest parts” of an audio signal, two key questions must be answered: In general, this means attenuating only the loudest parts of the signal. Though the effect/process has plenty of uses in the world of audio, its main purpose is to make the difference between the highest and lowest amplitudes of the audio signal smaller. Feed-Forward Compressors.Ĭompression (more technically “dynamic range compression”) is a process in audio that reduces or “compresses” the dynamic range of an audio signal. To fully understand feedback and feed-forward compression, let's begin by discussing compression in more general terms.Ĭlick here to skip ahead to the section Feedback Vs. Examples Of Compressors With Feedback & Feed-Forward Topology.Comparing Applications For Feedback & Feed-Forward Compressors.By the end of this post, you'll have a more complete understanding of compression and its role in audio production/processing. In this article, we'll discuss the theory behind feedback and feed-forward compressors in greater detail and consider examples of each of these compressor types. ![]() This compressor type anticipates the signal amplitude and adjusts the sidechain signal in advance. What is feed-forward compression? Feed-forward compression feeds the audio signal into the sidechain before the gain reduction element. This compressor type reacts to the signal amplitude without anticipating. What is feedback compression? Feedback compression feeds the audio signal into the sidechain just after the gain reduction element. The distinction between feedback and feed-forward compressors is one of those more advanced topics that we should ask about once we understand the essentials of audio dynamic range compression. ![]()
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