# Компрессор

Компрессор — это прибор, уменьшающий уровень сигнала на заданный пользователем коэффициент («Степень сжатия») при превышении сигналом уровня, заданного пользователем («Порог срабатывания»). Компрессор имеет возможность работы со среднеквадратичными (RMS) или пиковыми значениями сигнала (в зависимости от пользовательских настроек прибора).

PulseEffects uses the compressor from Linux Studio Plugins.

## Attack

Attack determines how many milliseconds (ms) it takes your compressor to apply a full dose of compression to your audio signal once it passes the threshold. If the signal peaks above the threshold and quickly returns to below the threshold, it may never receive a full dose of compression.

## Release

Release determines how many milliseconds (ms) it takes your compressor to stop attenuating gain once your audio signal drops below the threshold. A fast release will cause your compressor to stop attenuating gain quickly once the signal returns below the threshold. A slow release will cause your compressor to stop attenuating gain slowly once the signal returns below the threshold.

## Порог срабатывания

If a signal surpass this level it will trigger the compression stage.

## Степень сжатия

Set the ratio by which the signal will be reduced.

## Колено (излом)

Controls how smooth is the entrance in the gain reduction phase.

## Компенсирование

It amplifies your signal after processing.

## Compression Mode

Downward - Decreases the amplitude of the signal sections that are above the threshold.

Upwards - Increases the amplitude of the signal sections that are below the threshold.

# Sidechain

## Прослушать

Allows to listen the processed sidechain signal.

## Type

Feed-forward - The sidechain input is connected to compressor's input. More aggressive compression.

Feed-back - The sidechain input is connected to compressor's output. Vintage-style more accurate compression.

## Режим

Peak - Measure signal's peak.

RMS - Root mean square of the input signal.

Low-Pass - Input signal is processed by a low-pass filter.

Uniform - Input signal is processed by a uniform filter.

## Source

Middle - Middle part of signal is used for sidechain processing.

Side - Side part of signal is used for sidechain processing.

Left - Only left channel is used for sidechain processing.

Right - Only right channel is used for sidechain processing.

## Pre-amplification

Pre-amplification of the sidechain signal.

## Reactivity

Reactivity of the sidechain signal.

## Lookahead

Look-ahead time of the sidechain relative to the input signal.

# Advanced

## Relative Release Threshold

Relative to the Attack Threshold that sets up the threshold of Release Time.

## Boost Threshold

Related to upward compression mode only. It defines the threshold below which the constant amplification will be applied to the input signal. This prevents the compressor from applying infinite amplification to very quiet signals.

## High-pass Filter Mode

Sets the type of the high-pass filter applied to sidechain signal.

## High-pass Frequency

Sets the cut-off frequency of the high-pass filter.

## Low-pass Filter Mode

Sets the type of the low-pass filter applied to sidechain signal.

## Low-pass Frequency

Sets the cut-off frequency of the low-pass filter.

# Отклики

https://www.blackghostaudio.com/blog/the-ultimate-guide-to-compression

https://lsp-plug.in/?page=manuals&section=sc_compressor_stereo

https://en.wikipedia.org/wiki/Dynamic_range_compression