Junger Audio MIX4 Small Desktop Mixer - Manual (Page 63)

Jünger Audio-Studiotechnik GmbH
page 60
2.0:1
1.6:1
1.3:1
OFF
ratio
-50
-40
-30
-20
-10
[dBFS] -10 -20 -30 -40 -50 -60
output
input
range
max. 15dB
Compressor characteristic curve
Expander characteristic curve
gate
OFF
6dB
-50
-40
-30
-20
-10
[dBFS] -10 -20 -30 -40 -50 -60
output
input
range
0...40 dB
threshold
level
-20...-60, off
The limiter with transients always utilizes an attack time of 0 (zero). The release time has more influence on
the increase of loudness than all other parameters.
The Mix4’s Multi-Loop™ Compressor acts rather differently than traditional compressors regarding gain.
Compression is defined as the reduction of the dynamic range of the input signal to match the dynamic
range of the storage system, transmission system, and/or the listening environment. Typical approaches to
this task often result in audible artifacts and lack luster performance. The Junger approach takes an
atypical approach that avoids these difficulties.
In the Junger system, compression of the program signal
takes place over the entire input level range, not just the
upper end above a certain threshold level.
Compression is partly achieved by increasing the level of
low level signals. The lower the input signal level, the
higher the additional gain applied to that input signal by
the compressor. As the level of the input signal rises, the
amount of gain applied is reduced. Please see the figure
to the right.
Dynamic structures of the entire range of the input signal
amplitude are converted proportionally. Even after
compression the dynamics of incoming audio are
maintained, only slightly condensed, leaving a
transparent, seemingly uncompressed sound impression.
The gain of the compressor (called ‘range’) can be
limited from 1 dB to 15 dB to prevent unacceptable
increase in backgrounds during signal pauses (e.g.
ambience).
To help eliminate unwanted very low level noise
(air-conditioning, hum, and noise), a Junger Expander
can be used. Below an adjustable threshold level, the
expander will attenuate the level of the incoming signal.
As the incoming signal drops so low that it is ‘in the
noise‘ the Expander reduces the signal level further to
‘hide‘ the noise.
The Range parameter sets the maximum attenuation
applied when the incoming signal level is within 6 dB below the Threshold level.
The limiter of the MIX4 has an adjustable threshold. It defines the trigger point of the limitation and normally
is set to 0 dBFS. If this value is lowered, the rotation point of the compression response curve will be moved
in parallel..
For operating it is very important to show these relations quite plainly in order to make optimal use of the few
necessary settings. Therefore, it makes no sense to increase the system gain when the limiter is already
operating. It will not be audible over a wide range of GAIN but small signal level will be increased
unnecessarily.