Lunch Box: choose a compressor around the envelope

Choose the movement you need

A compressor can restrain a sharp leading edge, bring a note's body forward or make several hits share a rhythmic movement. Lunch Box offers multiple engines, so begin with the desired envelope rather than a favourite model name. An acoustic guitar figure and an explosive room mic may benefit from very different recovery behaviour.

Select a phrase with more than one intensity. Include an accent and the quieter event that follows it. That second event often reveals whether the processor has recovered in a way that serves the performance.

A time value belongs to its engine

The engines have different timing behaviour. Attack and release settings should therefore be auditioned as part of the selected engine's response, rather than treated as a promise of identical physical behaviour across every model. Establish the engine before making detailed timing decisions.

The detector can use the source's own signal or an external sidechain where the host supplies one. SC Listen is an audition command that is not host-automatable and does not persist enabled in a saved state. Use it to understand detection, then return to normal monitoring.

Workflow one: keep an acoustic-guitar rhythm articulate

Use a picked or strummed phrase with a clear accent pattern, and hear it with the vocal or other featured part.

1. Choose an engine and a restrained ratio or pressure setting appropriate to the part's dynamic range.
2. Set attack while listening to the pick edge. Retain it when it carries the rhythm, or soften it when it distracts.
3. Adjust recovery so the next intended accent arrives with a useful level relationship.
4. Use detector filtering if low body resonances cause more compression than the musical accents require.
5. Match the output and compare the entire figure.

If the softer strokes vanish or the body seems to swell between every accent, reduce the amount or reconsider timing. The desired result is a readable rhythm, not an instrument that has lost the player's deliberate strong and weak strokes.

Workflow two: a compressed drum layer with a clear direct hit

A room or parallel drum track can provide sustain and excitement while the direct kit supplies definition.

1. Choose an engine whose stronger action produces a useful body on the actual drums.
2. Set timing on a loop containing kick, snare and cymbal decay, then raise the compression until the layer has its intended energy.
3. Use Mix to restore a proportion of the direct response if the fully processed version is too flattened.
4. Rebalance the layer beside the main drums and hear the fill as well as the regular groove.

A parallel treatment can make spill and ambience more audible. If the cymbals take over before the drums gain useful body, change the detector or the pressure instead of simply raising the return. Keep the direct kit's main rhythmic accents in charge.

A creative use: let another part prompt the movement

With a real external sidechain route in the host, send a rhythmic source to Lunch Box's detector while processing a sustained keyboard or texture. Adjust the compressor so selected beats create an audible space in the sustained part. The detector input is control information; it does not need to become an audible extra instrument.

Confirm the route before setting an extreme threshold. Use SC Listen briefly if needed, then judge the processed part in normal playback. A controlled rhythmic dip can create room or movement; an excessively deep dip can make the sustained harmony feel absent.

Compare engines with the musical phrase intact

Return to the original passage after a model change and readjust by ear. A number copied from another engine is a starting experiment, not an equivalent result. Keep a matched-level bypass available throughout.

Commit when the chosen movement supports both the strongest event and the quieter one after it. That relationship is a more useful reason to keep an engine than its name or the apparent drama of the gain-reduction meter.