Table of Contents
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Spectral Signature
Adaption Speed
Adaption Grade /
Response
Relative Gate
Threshold (dB)
Max Loudness
Boost (dB)
Expert
[ON / OFF]
[0 / 2 Mid / 3 / 4 Fast]
This parameter affects the time taken for the bands to reach their target
values. Fast settings even out differences between sources, but can
lead to audible transitions. They are well suited for single channel
signals, for example to even out sound differences due to movement in
front of a microphone. Slower settings remain unobtrusive, but cannot
bring down differences very quickly. They are suitable for mixed content
or buses with varying content. The overall spectrum remains well
balanced without drastic sonic changes.
[Soft / Mid / Hard]
In order to achieve a stable and natural behavior, the intensity of the
gain change needs to process according to a response curve. This
curve is defined by a ratio. A high ratio means that a difference of 5dB
results in a gain change of almost the same amount. A low ratio means
that the actual gain applied is lower. A ratio of 2:1 would bring the
amplification up to 2.5dB in this example. The max gain value is applied
after the ratio calculation. As these ratios are not static, they have been
combined into three preset responses. The average ratio increases from
'soft' to 'hard'.
[-10 .... -14 ... -20 / OFF]
To prevent a band from amplifying noise (especially hum), a relative
gate can be set. If the energy within one band is lower than this gate, no
amplification will take place. This is especially useful, when mixed
content with highly varying frequency response is processed (for
example a radio station output with alternating presenter voice and
music).
[0.0 ... 1.5 ... 12.0]
The human hearing is not a linear system. When levels get low, humans
perceive less bass within the signal and the sound becomes subjectively
thin and tiny. This phenomenon is well known and documented as the
'equal loudness contours'. By setting up Max Loudness Boost the
system compensates for this difficulty of the human perception and
raises the bass bands as levels decrease. Our intelligent system
compensates the frequency response independently from the absolute
playback level. Max Loudness Boost is the amount of gain that the
system is allowed to build up, not a static gain value. We suggest to
experiment with a start setting of 4.
[ON / OFF]
All parameters within the Expert section are duplicated in the Signature
and Spectrum graphs. They can be used to enter numerical values
directly. Changes are reflected in the graphs and likewise in reverse.
Link Max Gain
Settings
Link Threshold
Settings
Band 1
Normalized
Signature level
Max Gain
Absolute Gate
Threshold
Band 2 ... 16
66
D*AP8
[ON / OFF]
[ON / OFF]
[ON / OFF]
[-40.0 ... 0 ... 40.0]
[0.0 ... 3.0 ... 12.0
[-84.0 ... -80.0 ... 0.0]
similar parameters as Band 1
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