Multiband Controls
The controls in the Multiband menu (1A) simultaneously adjust multiple individual parameters related to the multiband AGCs, compressors, and limiters.
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Figure 1 - Multiband menu
The Range control (1B) determines the amount of available gain in the Multiband AGCs. It is typically adjusted to have enough "room" to increase low-level input audio and reduce high-level input audio. Note that setting this control too low may cause individual bands to run out of gain before others, resulting in inconsistencies in the overall spectral balance.
The Power control (1D) adjusts the ratio of the Multiband AGCs. Higher settings increase the ratio and provide more consistency, while lower settings yield a more open sound at the expense of precise control.
Enabling the Multiband Compressors (1C) adds a layer of multiband compression on top of the corresponding Multiband AGCs. These compressors are typically set to operate faster than the AGCs, but much slower than the limiters, and are useful for adding a bit of density and "squish" to the dynamics.
The Multiband Compression Drive control (1E) sets the overall amount of multiband compression. A little compression goes a long way, and too much compression can result in a flat, fatiguing sound.
The Multiband Compression Threshold control (1G) sets the point at which compression occurs for a given Drive setting relative to the multiband AGCs. Higher settings allow the compressors to contribute more to the overall processing.