Metric Halo Mobile I/O - Manual (Page 277)

+DSP
277
Master Bypass
{On, Off}
Puts the mixer into direct route mode (e.g. all inputs are directly routed to the corresponding
outputs, and no mixing occurs).
MIOComp
• Synopsis: Flexible Signal Dynamics Compressor
• Category: Dynamics, Mastering
• Channels: 1, 2
Description:
MIOComp is a flexible, full featured dynamics processor that provides compression/limiting function-
ality.
The compressor provides a flexible detector that can be driven from the input signal or a sidechain
input. The detector computes the input level of the source signal, using the user specified
Attack
and
Release
times to control the responsiveness of gain cell of the compressor.
When the detected level is below the
Threshold
, the gain cell passes the signal with no change.
Conversely, when the detected level is above the
Threshold
, the signal is attenuated based upon
the
Ratio
,
Knee
and the level of the signal above the
Threshold
.
When the
Knee
is set to 0, MIOComp acts a hard-threshold compressor. For every dB (x) the signal is
above the
Threshold
, the output signal increase above
Threshold
by x ÷
Ratio
.
When the
Knee
is set to a value above 0, the knee will be softened, and the effective
Ratio
will
increase gradually from 1 to the specified
Ratio
. The transition is made more gradual as the
Knee
is increased from 0 to 1.
After the compressor gain-reduction has been applied to the signal, an additional make-up gain block
applies a user specified
Makeup Gain
to the signal. If the
Auto Gain
has been enabled, the user
specified
Makeup Gain
is applied in addition to the compressor computed make-up gain.
After the make-up gain has been applied, the output signal is limited to level specified by the
Out
Ceiling
. This output ceiling limiter captures the effects of fast-transient breakthrough and is espe-
cially useful when using MIOComp on highly impulsive signals with large compression ratios.
Parameters:
Enable
{Off, On}
Enables the compressor.
Threshold
[-100, 0] dB
Sets the threshold at which the compressor begins to act. There will be no gain reduction applied
by the compressor when the input signal is below this threshold.
Ratio
[1, 100k]
The gain reduction ratio that is applied to the input signal when the signal is above threshold. The
actual ratio applied also depends on the knee parameter which can be used to soften the knee
and make the applied ratio progressive.
Attack
[1 µ , 500 µ ] s
The characteristic attack time of the application of the gain reduction. Longer attack times will
cause MIOComp to be less responsive to short transients. Short attack times are required to use
MIOComp as a signal limiter, but very short attack times can lead to distortion in the output signal.
The attack time is applied in the detector stage of MIOComp.