Kick Lab 01 · 12 min

Transient Lab

Hear how attack time, click level, brightness, length and punch change the first impression of a kick.

Controlled experiment

Change one cause. Hear the result.

Before moving a control, predict what will change. Use the play controls to compare at a comfortable level.

Audio starts only when you press a play button.

2 ms
How gradually the kick reaches its peak.
38%
The level of the short high-frequency layer.
4200 Hz
The centre of the onset energy.
280 ms
How long the tonal energy decays.
58%
The balance of upper body against low tail.
What changed

Move one control and listen for the relationship.

WaveformUpdates with the controls
Waveform is ready. Move a control to inspect the change.
Amplitude envelopeUpdates with the controls
Amplitude envelope is ready. Move a control to inspect the change.

Attention guide

Listen for these three things.

  • 1The first 30 milliseconds
  • 2Definition at quiet playback
  • 3Whether brightness becomes brittle

Guided practice

Three experiments worth doing.

Do them in order. Reveal “What to notice” only after you have described the result in your own words.

  1. 01

    Find the threshold

    Start with Click at 0%, then raise it until the kick becomes readable at quiet volume. Stop before it sounds detached.

    What to notice

    The useful setting is often the first clearly audible change, not the brightest one.

  2. 02

    Attack without loudness

    Move Attack from 0 to 18 ms while keeping every level fixed.

    What to notice

    A slower rise can soften impact even when the peak level is unchanged.

  3. 03

    Short versus thin

    Reduce Length, then restore Punch.

    What to notice

    Duration and body balance are different controls; a short kick does not have to be thin.

Check your model

Which change most directly softens the initial arrival without lowering the whole kick?

Choose the answer that explains the cause, not merely the symptom.

Close the loop

Can you explain the result without the controls?

If you can name the cause, the audible change and the musical tradeoff, the concept is ready to transfer into your own session.