Audio Equalizer Online - Free
Shape the tone of your audio by boosting or cutting specific frequency ranges. Make a muddy voice clearer, add brightness to a dull recording, or reduce harsh frequencies that hurt your ears. Each band targets a different part of the frequency spectrum.
Shape the tone of your audio by boosting or cutting specific frequency ranges. Make a muddy voice clearer, add brightness to a dull recording, or reduce harsh frequencies that hurt your ears. Each band targets a different part of the frequency spectrum.
Problems This Tool Solves
My voice recording sounds muddy and unclear
Cut 200–400 Hz by 2–3 dB to reduce muddiness. Boost 2–4 kHz by 2–3 dB for clarity.
I do not know what the frequency numbers mean
Low numbers (60–250 Hz) = bass. Mid (250 Hz–2 kHz) = voice body. High (2–20 kHz) = clarity and detail. Each slider adjusts one range.
EQ made my audio distort
Boosting adds gain. Cut competing frequencies instead of boosting the ones you want. Cuts are safer and sound more natural.
Harsh S and T sounds (sibilance) after boosting treble
You boosted too much in the 5–8 kHz range where sibilance lives. Cut 5–8 kHz by 2–3 dB instead of boosting treble. A narrow cut here tames the harshness without dulling the overall sound.
Common Use Cases
Make speech clearer
Cut 200–400 Hz to reduce muddiness, boost 2–4 kHz to add clarity. Common fix for home-recorded podcasts and narration.
Brighten a dull recording
Add a gentle boost around 8–12 kHz to bring back detail and air that microphone placement or compression removed.
Reduce rumble and low-end noise
Cut everything below 80–100 Hz to remove handling noise, room vibration, and HVAC rumble from a recording.
Warm up thin-sounding audio
Boost 100–200 Hz gently to add body and warmth to a recording that sounds too bright or harsh.
Compensate for car audio or phone speakers
Small speakers roll off bass and may over-emphasize mids. Boost 80–150 Hz slightly and cut 800 Hz–1.5 kHz to rebalance for limited playback systems.
How to Equalize Audio Online
- Upload your audio file to the editor.
- Open the Equalizer in the Effects section. Each slider controls a frequency band.
- Adjust the bands: boost to emphasize, cut to reduce. Preview in real time as you adjust.
- Click Apply to process the audio, then export.
Equalizer vs Bass Boost vs Compressor
Equalizer
Adjusts multiple frequency bands independently. Full tone control across bass, mids, and treble.
Best for: voice clarity, fixing muddiness, shaping overall tone, solving specific frequency problemsBass Boost
Boosts only low frequencies below 200 Hz. One slider, one job.
Best for: adding bass punch to music for headphones or car audioCompressor
Controls volume dynamics, not tone. Tames loud peaks and brings up quiet parts.
Best for: evening out volume differences, controlling peaks in speech or musicCommon EQ Moves by Problem
| Problem | Frequency range | Action |
|---|---|---|
| Muddy, boomy voice | 200–400 Hz | Cut 2–3 dB |
| Hard to understand speech | 2–5 kHz | Boost 2–4 dB |
| Harsh sibilance (s and t sounds) | 5–8 kHz | Cut 2–3 dB |
| Thin, no warmth | 100–200 Hz | Boost 2–3 dB |
| Rumble or handling noise | Below 80 Hz | Cut heavily or use high-pass filter |
| Dull, lifeless recording | 8–12 kHz | Boost 1–2 dB for air and detail |
Voice Cleanup Workflow
- Remove Noise - Clean background noise before EQ so you shape signal, not noise
- Equalize - Shape tone: cut mud, add clarity
- Compress - Even out volume after tonal changes
- Normalize - Bring to final target level
Quick Tips
- Cut before you boost. Removing problem frequencies is more effective and causes less distortion than adding gain.
- Make small moves. 2–3 dB is usually enough. If you need more than 6 dB of boost, the problem may need a different tool.
- Always compare before and after. Toggle the EQ on and off to make sure the change is actually an improvement.
- Check your result on different speakers or headphones. EQ that sounds good on one system may sound wrong on another.
- If your voice sounds boomy from being too close to the mic (proximity effect), cut 200–400 Hz by 2–4 dB. This is the most common fix for home-recorded podcasts.
Common Misconceptions
Myth: Boosting is better than cutting
Reality: Cutting is almost always safer. Boosting adds gain and risks distortion. Remove what sounds bad first. Only boost if cutting alone does not solve the problem.
Myth: EQ cheat sheets give you the right settings
Reality: Every recording is different. Cheat sheets are rough starting points, not rules. Use your ears and the sweep technique to find actual problem frequencies.
Common Problems and Fixes
Audio sounds distorted after EQ
Boosting adds gain, which can push the signal past 0 dBFS. Reduce your boost amounts, or cut the competing frequencies instead of boosting the ones you want.
Voice sounds nasal or honky
Too much energy in the 800 Hz–1.2 kHz range. Cut that area by 2–3 dB.
EQ made the audio worse, not better
Undo and start with cuts only. Identify what sounds bad (muddy, harsh, thin) and cut that range first. Only boost after the problems are gone.
Why Use This Audio Equalizer Online
- Multiple frequency bands with independent gain control
- Real-time preview so you hear changes as you make them
- Works on the full file or only a selected region
- Combine with Noise Removal and Compressor for full audio cleanup
- All processing runs locally in your browser
Frequently Asked Questions
What do the frequency numbers mean?
Low numbers (60–250 Hz) are bass. Mid numbers (250 Hz–2 kHz) are the body of voices and instruments. High numbers (2–20 kHz) are clarity, detail, and brightness. Each slider lets you boost or cut that range.
Should I boost or cut?
Cutting is almost always safer and sounds more natural. If speech sounds muddy, cut the muddy range (200–400 Hz) rather than boosting the clarity range. Only boost when cutting alone does not solve the problem.
Can EQ remove background noise?
EQ can reduce frequencies where noise lives (like cutting a hum at 60 Hz), but it cannot remove noise without affecting speech in the same range. For broad noise reduction, use the Noise Removal tool.
What EQ settings should I use for podcasts?
A solid starting point: cut 200–400 Hz by 2–3 dB to reduce muddiness, boost 2–4 kHz by 2–3 dB for clarity, and add a gentle boost around 10 kHz for presence. Adjust to taste from there.
What frequencies correspond to what sounds?
Sub-Bass (20–60 Hz): felt more than heard. Bass (60–250 Hz): kick drums, voice warmth. Low Mids (250–500 Hz): muddiness often lives here. Mids (500 Hz–2 kHz): voice body, instruments. Presence (2–5 kHz): voice clarity, intelligibility. Treble (5–10 kHz): sibilance, detail. Air (10–20 kHz): shimmer and sparkle.
How do I find problem frequencies?
The sweep technique: boost one band by 6–10 dB and slowly move it across the frequency range. When the problem gets louder and more obvious, you have found it. Now cut that frequency instead of boosting it.
What does each slider control in plain language?
Sub-Bass (20–60 Hz): felt more than heard, rumble territory. Bass (60–250 Hz): kick drums, voice warmth, the weight of music. Low Mids (250–500 Hz): where muddiness lives - often the first thing to cut. Mids (500 Hz–2 kHz): the body of voices and most instruments. Presence (2–5 kHz): voice clarity and intelligibility. Treble (5–10 kHz): detail, sibilance, the sharp edge of consonants. Air (10–20 kHz): shimmer and sparkle, barely audible but missed when gone.