TC Electronic Finalizer 96K User Manual page 25

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Expander
Expander/Gates are often used to remove unwanted background
noise. Both the Gate and the Expander perform what is called
“Downward Expansion”. In general this means that below a
certain Threshold the Input signal gain is reduced on the Output
according to a specific Ratio. If for instance the Expander has a
Ratio of 1:2, the Output is decreased with 2dB for every single
dB the Input is decreased below Threshold.
- Press the PARAMETER keys to select parameter.
- Turn the ADJUST wheel to change values.
- Press the BAND keys to select between the three bands.
- Press the MENU keys to select User/Xpert/Xover.
User Menu
Use the ADJUST wheel to change the Threshold of the three
bands. When the input signal drops below the Threshold the
Expander is activated. As you can see in the diagram above: the
higher a Threshold point, the more expansion you will get.
The Ratio of the gain reduction. Use these parameters to adjust
the Ratios of the three Expander bands. If the Ratio is set to 4:1
you will get a 4dB decrease of the Output signal for every 1dB
the Input signal is decreased below Threshold.
The Expander Monitor gives you a graphical picture of the Ratio
and Threshold settings.
Please see description on page 27.
Expander
Expert Menu
Use the ADJUST wheel to change the Attack time of the three
bands. The Attack is the time the Expander uses to bring the
reduced signal to 1:1, when the signal exceeds the Threshold.
Use the ADJUST wheel to change the Release time of the three
bands. The Release time is the time the Expander uses to reach
the the gain reduction specified by the Ratio parameter.
Example: If the Input signal drops 4dB below Threshold, with
the Ratio set to 1:4 and the Release time set to 20 ms, the
Finalizer will use 20 ms to reach a total gain reduction of 16dB.
This parameter adjusts the “look-ahead” delay. This means that
your audio signal is delayed, e.g. 10 ms.
By slightly delaying the audio signal, you give the processor a
chance to look ahead at the present signal, and the reaction will
therefore be more accurate than a standard Compressor/Limiter/
Expander.
The actual look-ahead delay time is scaled with the Attack time
individually on all three bands.
Note: This delay time parameter is common for the Compressor,
Limiter and Expander.
Cross-over Menu
With the L-Xovr and H-Xovr you set the Cross-over points of the
three bands in the dynamics section.
Note: The Cross-over points are common for the Compressor,
Limiter and Expander.
The Expander range determines the maximum amount of gain
reduction in the Expander, e.g. when set to 6dB, the Expander
will only reduce the output by 6dB no matter how much the
signal drops below threshold. This enables you to use the
Expander to simply reduce the signal below a certain threshold
instead of a complete shut-off.
Press the blue OK key to bypass the Expander section.
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