250 ms 10...1000 ms RELEASE defines how fast the output signal returns to its
normal level once it drops below the threshold.
BYPASS activates (not engaged) or deactivates (engaged)
the Limiter, which allows for quick A / B comparison
between the limited and unlimited audio signal.
PEAK ANTICIPATION (PA) LIMITER
A Limiter is used when the output signal must not exceed a specific peak level, independent of how much
the input level rises. Short attack times effectively limit overshoots. Limiters are often used as protection for the
components following them in an audio chain, i.e. to prevent an amplifier from clipping or protect loudspeaker systems
against mechanical damage. The Peak Anticipation Limiter calculates the gain reduction using the maximum value of
the look ahead buffer and is optimized for loudspeaker and transducer protection.
Element
Default Range Description
This indicator signals in dB by how much the limiter reduces
the signal level. A red bar that increases from the right to the
left indicates the degree of gain reduction.
21 dBu
or
8.696 V
-9.0...+21.0
dBu or
0.275...8.696
V
The THRESHOLD parameter defines the level value at which the
limiter sets in. Signal levels below the threshold will pass
through the limiter. As soon as the signal level reaches or
exceeds the threshold, signal limiting sets in. Generally, the
THRES- HOLD of the limiter should be set some dB higher than
the compressor’s threshold to effectively limit high level peaks.
Entering the threshold value is possible in dBu or V. The value
can be entered in either box and will automatically be
converted in the other.
0 ms 0...50 ms ATTACK defines how fast the gain is reduced after the signal
exceeds the threshold level.
IRIS-Net DIGITAL MATRIX | en 449
Bosch Security Systems B.V. User Manual 2017.05 | 3.20 | F.01U.119.956
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