Compressor Settings Calculator
Compressor Settings Calculator
Stop guessing attack and release. Pick your source, set the song BPM, choose a vibe — get attack, release, ratio and gain-reduction targets that actually groove.
Compressor attack and release, without the guesswork
The fastest way to a musical compressor setting is to time the release to the song. This calculator does exactly that: it converts your BPM into note lengths and hands you an attack, release, ratio and gain-reduction target for the exact source you are compressing — lead vocal, rap vocal, drum bus, kick, snare, bass, master and more.
How to dial it in
- Enter the song BPM (find it with the BPM Detector if you are not sure).
- Pick the source and a vibe: transparent, punchy or aggressive.
- Copy the settings into your compressor, then adjust the threshold until you hit the suggested gain reduction.
Why these numbers work
Attack decides how much transient escapes: under ~10 ms clamps peaks (great for rap vocals), 20–30 ms lets drums punch. Release is groove: when it matches a note length — an 8th or 16th at the song tempo — the compressor breathes in time instead of pumping randomly. Ratio sets the attitude, and gain reduction is the real amount of compression: the same 4:1 sounds gentle at 2 dB GR and crushed at 10 dB.
These are starting points that professional engineers actually use — trust your ears for the last 10%. If a compressor has an Auto release, try it too; on program material it often wins.
Compressors worth owning
Aggressive vocals and drums love an 1176-style FET like the Waves CLA-76. Smooth lead vocals sit beautifully in an opto like the Tube-Tech CL 1B. On zero budget, Klanghelm MJUC jr (vari-mu glue) and the Analog Obsession collection are absurdly good for free. Some links are affiliate links — they support the free tools at no extra cost to you.
FAQ
What attack and release should I use on vocals?
A useful starting point: lead vocal attack 15-30 ms with release around an 8th note at the song tempo and 3-5 dB of gain reduction; rap vocal attack 1-5 ms, release near a 16th, 5-8 dB. Then fine-tune by ear.
Why sync release to BPM?
The compressor recovers in time with the music, so its movement becomes part of the groove instead of random pumping. It is the same trick as tempo-synced delays.
How much gain reduction is too much?
If the meter regularly shows more than the suggested range and the source sounds smaller instead of more solid, back off - or split the work across two compressors in series, each doing half.
Serial compression - when?
Very common on vocals: a smooth opto doing 2-3 dB into a faster FET doing 2-3 dB sounds bigger and more consistent than one compressor doing 6 dB.
Do these settings work on any compressor plugin?
Yes - attack, release, ratio and gain reduction mean the same thing everywhere. Character differs between models, but the timing math is universal.
Related free tools
Compression is half the vocal sound.
The other half is the chain around it. The Vocal Chain Bible gives you 88 complete chains from Grammy-winning engineers, settings included.
Real sauce. No fluff.