New" or feed forward type compression, Api 527 compressor new: feed-forward compression, Knee – API Audio 527 Compressor User Manual
Page 10: Page 9

API 527 Compressor
NEW: Feed-Forward Compression
In a feed-forward compressor, the RMS detector normally gets its signal
from a split of the input signal. With this method, the RMS detector sends
a signal to the VCA that is an exact ratio of the desired compression set
by the RATIO control. This is how many new VCA based compressors
work. This can yield more aggressive compression and a harder, more
affected sound.
TYPE
LINK
KNEE
THRUST
R
METER
VU
GR
IN
NEW
OLD
HARD
SOFT
IN
IN
KNEE
Knee determines the 527 Compressor’s response curve at the
onset of compression.
The 527 Compressor has two (2) knee settings that control
how the compressor transitions into compression:
SOFT: Rounded response curve
HARD: Sharp response curve
The knee of the compressor is selected using the KNEE switch.
IN
OUT
2 VCA's
PER
CHANNEL
THRESHOLD, ATTACK,
RATIO, RELEASE,
LINK CONTROLS
RMS DET
THRUST
FILTER
"NEW" or FEED FORWARD type COMPRESSION
2510
2520
Page 9