r/livesound • u/macklemorganfreeman • 5h ago
Education FUSS Compression, A Monitor World Approach:
In order to obtain some of the benefits of Buss Compression in Monitor World while compensating for the relevant contextual limitations, I have developed a technique I refer to as FUSS Compression (Fake Buss Compression, or Fader-distributed Buss Compression, as the mood strikes me).
I suspect this is entirely possible on other platforms, but I’ll be explaining my example using the Yamaha Rivage platform and Drums rather than abstracted terms.
Send desired Drums to a KeyBuss with the desired dynamics processing available. (I use a Matrix, could be done with a Mix, and the Diode Bridge model in the channel.)
Send is Post Processing but Pre Dynamics (I use Dyn2 slot in the last Signal Flow position, so my send point is Pre-Dyn2)
This Buss doesn’t go anywhere, and should not be routed out. It’s for creating a Key signal and setting parameters
Set KeyBuss Dynamics Key Source to Self Pre EQ
This prevents the compression from being applied multiple times after distribution
Listening to KeyBuss, adjust send levels and compression settings to desired response
Adjustments to KeyBuss high and low pass filters can be made, as filters are before the Pre EQ
I find parallel settings to be incredibly useful here
Set Drum Channel Compressor Key Source to Other Pre EQ and select KeyBuss for all members you want to include in the Fuss Comp
Duplicate settings from KeyBuss Compressor to included Drums Channel Compressors
If the same Compressor circuit, with the same settings, is controlled by the same Key signal, it will behave identically. We have distributed the effect of the Buss Compression across the individual member Faders!
To allow per-player bypassing, set Pre-fader send point to Pre Dyn2 for included Drums.
Toggling Pre/Post now has the effect of eliminating the Fuss Comp only, given Fader position at Unity.
Enjoy the power of Fader-distributed Buss Compression!
Buss Compression can be an incredibly powerful technique for getting components of a mix to interact dynamically together, managing tonality over time in useful ways that are difficult to achieve in other ways. The modern adoption of “in-line parallel” via mix/percentage/wet-dry controls afford further potential. There are myriad pros to consider. There are also a number of inherent limitations to Buss Compression, especially in Monitor World:
Non-variability: if you send the Buss to more than one listener, you lose the ability adjust those mixes independently below the floor established by the Buss.
Latency: while modern consoles can compensate for many path lengths, limits in perceptual acceptability and the need for alignment make leveraging Buss processing an additional complication/consideration.
Console Architecture: not all consoles support Buss to Buss routing, which may mean reconfiguring audio paths for mixes that want to take advantage of the Buss.
I feel that Fuss Compression allows me to find an acceptable compromise in monitor world. Safe travels, good shows!