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pressor/limiter. Expanders generally function with a flat ratio curve, so that the signal continually fades. Noise-
gates however, can be seen as high ratio expanders. If the signal falls below the threshold, it is radically
attenuated.
The Behringer AUTOCOM PRO is equipped with a newly developed IRC (Interactive Ratio Control) Expander,
the ratio of which is automatically adjusted dependent on the program material. The response characteristics
of conventional expanders tend to cut into the signal abruptly and the result of this is unacceptable most of the
time. Gain changes become audible.
The IRC Expander is therefore equipped with a soft, interactive non-linear ratio curve, which is best suited to
human hearing. Critical signals in the vicinity of the threshold level are processed with a minute expansion
ratio, whereas signals that reduce in level will be subjected to an increasingly higher ratio, which will result in
greater attenuation.