Specifications

Unit: dB - Value Range: 0 to +24

Default Value: 0

Sets the smoothness of the transmission curve for the specific dynamic processing section. The curve is smoothed around

the threshold value of the dB amount set with the knee value.

Peak Detection Amount (29)

Unit: % - Value Range: 0 / 100 - Step: 1

Default Value: 0 %

Instant peak value can be added to the RMS signal feeding the detector section, making the dynamic processing more

sensitive to audio transients.

Angel's Share (30)

Unit: % - Value Range: 0 / 100 - Step: 1

Default Value: 0 %

This setting relaxes the ratio applied to the processor section when the detected signal dynamic raises.

This setting literally opens the sound, increases the dynamic impression and keeps some crest by adjusting in real time the

ratio of every dynamic processing section regarding both their current settings about ratio and the signal content (mainly

dynamic range). To start understanding this setting and easily hear it, take a full mixed drum kit or a complete mix with

punchy drums, set the compression threshold, ratio to get something near pumping or an aggressive compression. Then

increase the output gain to compensate the gain lost and then toggle between 0 and 100% of Angel Share. At 100 % you

should hear more air in the sound, more transient and less compression impression; especially in terms of attack.

Angel's Share Inverter (31)

When engaged, the behavior of the Angel's Share is inverted. The ratio value is increased depending of the detected signal

dynamic.

Hysteresis (32)

Unit: % - Value Range: 0 / 100 - Step: 1

Default Value: 0 %

Allows process the audio signal independently of the sound level but regarding the signal dynamic range. It is mixed with the

standard compression scheme.

Take a piece of full mixed music, set the ratio to 3-4 and the compression will start working. Now set the threshold of the

compressor to the maximum value, the compressor will stop working because the sound level will never reach the threshold.

Then increase the Hysteresis and you will see (and hear) the compression working again!!! Now decrease or increase the

input gain and you will see that the compression will continue to work equally; it's totally, completely independent of the

sound level and depends only on Ratio, Knee and sound content.

How can this be used? When you have too much dynamic in the sound, going for e.g. from -3, -6 dB Vu (or less) to +12 dB;

If you want to compress the low levels you will hear the sound "pumping" when the sound reaches the High levels and the

only thing to do with standard compressor will be to increase the threshold to rescue some airiness in the sound. But when

doing that the compressor will not work any more on the low levels and you will hear some sound differences (in term

density, live space, grain etc…) especially when the compressor starts working. With Hysteresis, adjust the threshold and

ratio on the High levels to what you think OK, then increase the Hysteresis (from 20 to 50 %) and listen now the low levels

and especially the transition between Low and High levels. You can also start increasing the ratio to increase the effect.

You'll then notice that the compression will always be active but can still take care of High, loud levels (unless you set 100%

4.4 Pure Series II Pure Compressor II