Dynamic sound processing.

Dynamic sound processing.

dynamic sound processing

Side-chain: control of device parameters using parameters imported from another.

Dynamic Sound Processing

In devices for dynamic sound processing, the main one is the compressor, one way or another. Rather, any dynamics processor is a compressor with various settings, and the performance of the compressor depends on the specific task. Therefore, the side chain is often referred to as side chain compression.

The side chain method is used especially in compressors, expanders and gates.

A typical example of the use of the side chain is the automatic suppression of a musical signal in the presence of a signal from a DJ microphone. This is implemented in the following way: the microphone signal is sent, in addition to the main, to the side chain, which is the compressor control. Which also compresses the musical signal. This scheme is often used on mixing consoles.

Something similar can be applied to several musical instruments that sound in the same frequency range, but with different loudness. For example, for synthesizer and guitar.

A very common case is the conflict between kick and bass. Generally speaking, it is these instruments that make up almost the entire low-frequency region of sound. Their coordination has a very good effect on the quality of the composition as a whole. The kick drum signal is selected as the side chain compressor control: upon impact, the bass signal is compressed using the default Threshold and Ratio values ​​(threshold and degree of compression.

In de-essers, dynamic equalization is often used, when the signal itself is used as a control signal for a parametric equalizer. It is only sent along the side chain with the release of “hiss” frequencies.

Parallel compression is often confused with side chain, although they have in common only a superficially similar scheme and the use of a compressor.

Parallel compression is a method of dynamic signal processing based on its branching, separate processing in each of the circuits (or only in one of them), followed by its addition.

A type of parallel compression (boost) involves compressing one of the original signal circuits, leaving the other as is. After its subsequent addition, it will turn out: the dynamic range will decrease while maintaining the signal peaks due to the pull-up of the “silent” component.