Range is from 1 to 64.Ĭurve the sharp knee around the threshold to enter gain reduction more softly. Set the amount by how much signal will be amplified after processing. Range is between 0.Īmount of milliseconds the signal has to fall below the threshold before reduction is decreased again. Range is between 1 and 20.Īmount of milliseconds the signal has to rise above the threshold before gain reduction starts. 1:2 means that if the level rose 4dB above the threshold, it will be only 2dB above after the reduction. Set a ratio by which the signal is reduced. If a signal of stream rises above this level it will affect the gain reduction. The filter accepts the following options: level_in To gain a softer entry in the compression the knee flattens the hard edge at the threshold in the range of the chosen decibels. So compressing the peaks of a signal about 6dB and raising the makeup to this level results in a signal twice as loud than the source. The overall reduction of the signal can be made up afterwards with the makeup setting. Shorter signals than the chosen attack time will be left untouched. attack determines how long the signal has to rise above the threshold before any reduction will occur and release sets the time the signal has to fall below the threshold to reduce the reduction again. This is done by setting Attack and Release. Because an exact manipulation of the signal would cause distortion of the waveform the reduction can be levelled over the time. So if you set the threshold to -12dB and your signal reaches -6dB a ratio of 2:1 will result in a signal at -9dB. Compression is done by detecting the volume above a chosen level threshold and dividing it by the factor set with ratio.
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