How do I set sidechain attack and release times?

Enter your BPM, pick the envelope length like a quarter note, and choose a shape. The tool splits the note duration into attack, hold, and release in milliseconds so the ducking breathes with the tempo.

What shape should I use for sidechain pumping?

The snap shape gives you a fast attack and quick recovery for that classic EDM pump. The even shape balances all three stages. The smooth shape eases the release for gentler ducking on pads and reverb returns.

How does BPM affect sidechain envelope timing?

Faster tempos mean shorter note durations, so the attack, hold, and release windows all shrink. The tool recalculates everything when you change BPM so the envelope stays locked to the groove.

Studio utility

Sidechain Envelope Planner

Turn note length and BPM into practical attack, hold, and release splits for pumping or ducking that feels tied to the groove.

BPM

Envelope length

Shape

Attack

Hold

Release

How the math works

Each preset divides the chosen note length into three proportions. Those proportions shift depending on whether you want the envelope to snap back hard, sit more evenly, or recover more smoothly.

When you would use it

Set a quick pump on a four-on-the-floor bass line.
Build a smoother duck on pads and reverb returns.
Use the timing budget as a baseline before fine-tuning by ear.

Sidechain feel is creative. The timing math gives you a framework, not the final answer.

FAQ

Why not show one exact sidechain setting?

Because envelope shape changes a lot depending on compressor design and source material.

What does the note division represent?

It is the total rhythmic window that the ducking effect should occupy.

Why include a graph?

It makes it easier to picture how the preset breathes before you dial it in on the compressor.