Processing, A detailed description, Input conditioning – Metric Halo Production Bundle User Manual
Page 91: Crossover, 91 input conditioning, 91 crossover, Multiband expander signal flow, 91 18.2. crossover controls, Input level control, Three-way crossover
91
18. Processing
A Detailed Description
In this chapter we'll discuss what each processing block does and how the controls work.
High
Expander
Output
Input
SpectraFoo
Output
Gain
Crossover
Mid
Expander
Low
Expander
Input Gain
Band Solos
Figure 18.1: Multiband Expander Signal Flow
The block diagram above illustrates the overall structure of the processing system provided by Multiband
Expander. The diagram does not indicate the various metering blocks.
Now lets examine the various processing blocks indicated in the diagram.
Input Conditioning
After the signal is routed to Multiband Expander it runs through an input gain block that provides input gain
of up to +30 dB. You can use this gain to condition signals that are low in level.
This input gain may also be used to pad out signals by up to –30 dB. While you may find this attenuation useful
to just bring down the level through the strip simply and quickly, you must realize that this gain is applied after
the signal reaches Multiband Expander and will not pad out any clipping that occurs in the A/D converters or
in a plug-in that is inserted before Multiband Expander.
The input gain is controlled by the “In Gain” knob.
Crossover
The crossover seperates the audio input into low, mid and high bands; each of these bands is then fed through
a compressor section. There are two controls to set the crossover points:
Figure 18.2: Crossover Controls
The control marked “LXover” sets the frequency of the low to mid crossover, and the control marked “HXover”
sets the frequency of the mid to high crossover.
You may also adjust the crossover points in the dynamic transfer function: