Audio Limiter Explained: Attack, Release, Ratio and Threshold
the limiter, explained.
A limiter is a safety ceiling for your sound. It lets you push volume and bass as far as you like while quietly stopping the harsh distortion that ruins loud music. Here's what it does, what every knob means, and how to dial it in — no audio degree required.
Last updated: July 12, 2026 · 6 min read
What a limiter actually does.
Every device has a maximum level it can reproduce — think of it as a ceiling. When a sound tries to go louder than that ceiling, it gets chopped off flat. That chopping is called clipping, and it's the crackly, harsh distortion you hear when audio is pushed too hard. A limiter watches your audio in real time and gently holds the loudest peaks just below the ceiling, so they never clip.
Without a limiter
Peaks smash through the ceiling. Your device can't reproduce them, so they get chopped off — that harsh crackle is clipping.
With a limiter
The limiter gently holds every peak below the ceiling. Same music, same loudness — no distortion.
This is why a limiter pairs so well with a Bass Booster or Volume Booster — it's the safety net that lets you go loud and stay clean.
Every setting, in plain English.
These are the exact controls in Echo's Advanced Limiter. Tap any one to expand it.
The threshold is the volume level at which the limiter wakes up. Anything quieter passes through untouched; anything louder gets reined in. Lower the threshold and the limiter engages more often (more taming, but you may hear it working). Raise it and the limiter only catches the very loudest peaks.
Lower
Engages sooner — catches more peaks, more obvious
Higher
Engages later — only the loudest moments are touched
Once sound crosses the threshold, the ratio decides how aggressively it's pushed back down. A gentle ratio nudges peaks; a strong ratio flattens them like a true brick-wall limiter. Higher ratios keep things safer from distortion but can make loud, punchy moments feel less lively if you overdo it.
Lower
Softer, more natural dynamics
Higher
Firmer control — a true “ceiling” feel
Attack is the reaction speed. A fast attack clamps down the instant a loud peak arrives — best for stopping distortion, though very fast settings can slightly dull the “snap” of drums. A slower attack lets the initial transient through before reacting, which keeps punch but allows brief peaks past.
Lower
Faster — maximum protection, less punch
Higher
Slower — keeps transient punch, lets brief peaks slip
Release is how quickly the limiter lets go once the loud moment passes. Too fast can cause a subtle “pumping” or breathing sound as the volume rushes back. Too slow and quiet passages right after a peak stay dipped. A medium release usually sounds the most transparent.
Lower
Faster recovery — can “pump” if too quick
Higher
Slower recovery — smoother, but can dip quiet bits
Because the limiter is holding peaks down, you have headroom to spare. Post Gain (make-up gain) adds a final volume boost after limiting, so the whole track sounds louder and fuller — without the peaks ever crossing the ceiling. This is the trick behind “loud but clean” audio.
Lower
No extra boost — pure protection
Higher
Louder overall — fills the headroom the limiter freed up
Where to start.
Not sure where to begin? These starting points cover most listening. Trust your ears and adjust from there.
Casual listening
Set and forget. Quietly stops distortion in the background.
Default settings — leave the Limiter on and enjoy.
Bass boost + volume booster
Pushing bass and loudness hard? Let the limiter be your safety net.
Faster attack, medium release, higher ratio, modest Post Gain.
Podcasts & spoken word
Even, comfortable levels so you never reach for the volume.
Medium attack & release, gentle ratio, a little Post Gain.
Tip: The Advanced Limiter is a Echo Pro feature. If you just want distortion protection with zero fuss, the default limiter settings already have you covered.
Common questions.
A limiter sets a hard ceiling on your audio and makes sure no sound ever crosses it. This prevents clipping — the harsh crackle that happens when audio gets too loud for your device to reproduce — so you can safely push volume and bass without distortion.
They're cousins. A compressor gently evens out the overall loudness of a track, bringing loud and quiet parts closer together. A limiter is a stricter version focused on one job: never letting peaks exceed a set ceiling. In Echo you can use both together for a complete dynamics chain.
For everyday listening, the default settings work great — the limiter simply prevents distortion in the background. If you're pushing the Bass Booster and Volume Booster hard, use a faster attack and a slightly higher ratio, then add a little Post Gain to recover loudness cleanly.
Used sensibly, no — it protects your sound. A well-set limiter is transparent: you hear cleaner loud passages, not the limiter itself. Only very extreme settings (very fast release, very low threshold) start to sound unnatural.
Try it on your own music.
Echo Equalizer is a free, ad-free, system-wide equalizer and bass booster for Android — with an Advanced Limiter to keep every beat clean.
Get Echo Equalizer