CCD.SCHOOL
0xp
Devices
Mission 23 · World 4

Compressor

Tame dynamics. Add punch.

Tame loud peaks. Bring up quiet bits. Glue everything together.

+80 XP🏅 Dyna Master

// WHAT IT DOES

A Compressor turns down loud sounds when they cross a threshold, by a ratio you set.

Threshold = 'when'. Ratio = 'by how much'. Attack = 'how fast it grabs'. Release = 'how fast it lets go'. Makeup = 'add gain back to match original level'.

Think of it like → An automatic volume knob with reflexes. Loud bit comes → knob turns down. Quiet bit → knob lets go.
▸ WHY YOU CARE
  • Vocals stay even all the way through.
  • Drums hit harder when compressed and made up.

// SEE & HEAR IT

SOURCE
0
OUTPUT
0
COMPRESSOR
▸ HOVER A KNOB
Pick a knob to see what it does
Each control has a one-line explanation here. Twist it to hear the change.
THRESHOLD
-20 dB
RATIO
4 :1
ATTACK
0.01 s
RELEASE
0.25 s
KNEE
6 dB
MAKEUP
1.40 x
PRESETS — TAP TO HEAR
OUTPUT SPECTRUM
WHAT CHANGED
  • Defaults — toggle A/B or load a preset to hear the device.
WHAT TO LISTEN FOR
  • Toggle A/B — compressed should feel more even, not just louder.
  • Crank the threshold down, listen for breathing/pumping artefacts.
  • Slow the attack to ~30 ms on drums to let transients punch through.
HOW TO USE
Press PLAY → tap a PRESET → toggle A/B to compare dry vs processed. Twist knobs to hear how each parameter changes the sound.
OPEN FULL COMPRESSOR LAB →
▸ HOW IT WORKS

Detector reads input → compares to threshold → calculates gain reduction (ratio) → smooths via attack/release → applied via VCA → makeup → output.

▸ Signal flow — watch the dot
▸ SIGNAL FLOW
AudioINPUTDetectorPROCESSGain ReductionGAINVCASENDMakeupBUSOutOUT
Glowing dot = your signal travelling through Live.
▸ LISTEN FOR
  • Gain Reduction meter swings on loud peaks.
  • Pumping = release too slow.
▸ WALKTHROUGH (3 steps)
  1. 1. DO: Drop Compressor on a vocal. Threshold so GR meter shows 3–6 dB on peaks.
    ▸ LISTEN: Loudest words pulled down.
  2. 2. DO: Set Attack 30 ms, Release 100 ms.
    ▸ LISTEN: Transients still poke through, body controlled.
  3. 3. DO: Add 4 dB Makeup.
    ▸ LISTEN: Vocal sits steady, louder, present.
▸ COMMON MISTAKES
  • Threshold too low + ratio too high = squashed lifeless.
  • Forgetting makeup — sounds quieter, not louder.

// QUIZ (QUICK)

Question 1 / 30 correct
Slower attack lets through more…
🎧 Headphones recommended — click to enable audio (each device & sim has its own ▶ play button)