Add Reverb to Audio Online - Free

Add depth and space to audio that sounds dry and flat. Reverb simulates how sound reflects in a physical room. A short reverb adds subtle presence. A long reverb creates a hall or cathedral feel. Use the mix control to blend the effect with the original signal.

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4.7

1.6K Ratings on the App Store

Problems This Tool Solves

My vocals get washed out and lost in reverb

Mix is too high. Keep reverb below 25–30% for speech. Start low, increase until you hear it, then back off 10–25%.

Reverb makes my audio sound boomy and muddy

Low-frequency buildup in the reverb tail. Use EQ after reverb to cut below 200–300 Hz.

I want the slowed+reverb sound for a remix

Slow the track to 0.8x with the Speed tool, then apply reverb with long decay (2–4 s) and high mix (40–70%). The signature dreamy sound.

Common Use Cases

Add presence to a dry vocal

A small room reverb with low mix (15–25%) adds natural depth without washing the voice out.

Slowed + reverb remix

Slow the track down with the Speed tool, then add a long reverb with high mix. The signature dreamy, submerged sound that started with DJ Screw.

Simulate a live room or hall

Longer decay times create the impression of performing in a large space. Useful for music demos and spoken word.

Create atmosphere for a podcast

A tiny amount of room reverb on a voice can make it feel less clinical and more natural, like a real studio.

How to Add Reverb to Audio Online

Upload your audio file to the editor.
Open Reverb in the Effects section. Adjust Time (room size), Decay (tail length), and Mix (wet/dry blend).
Preview in real time. Start with a low mix and increase until the space sounds right.
Click Apply to add the reverb, then export. The file is extended to capture the full tail.

Reverb vs Delay - Different Kinds of Space

Reverb

Thousands of blended reflections that create an ambient wash. Sounds like a room, hall, or plate.

Best for: adding depth and space, vocal polish, atmosphere, slowed+reverb remixes

Delay

Distinct, repeating echoes at a set time interval. Each echo is a clear copy of the original.

Best for: slapback echo, rhythmic repeats, vocal doubling, ping-pong effects

Starting Points by Style

Style	Time	Decay	Mix
Subtle vocal presence	0.3–0.6 s	Medium	15–20%
Small room	0.5–1.0 s	Medium	20–30%
Large hall	1.5–3.0 s	Slow	25–40%
Slowed+reverb / dreamy	2.0–4.0 s	Slow	40–70%
Cathedral / ambient	3.0–6.0 s	Very slow	50–80%

Quick Tips

Turn the mix up until you clearly hear the reverb, then back off 10–25%. That is usually the right amount.
Keep the mix below 30% for speech and podcasts. Reverb on voice gets muddy fast.
If the reverb sounds boomy, the Time is too long or the Decay too slow for the content. Shorten both.
The file is automatically extended to capture the reverb tail. You do not need to add silence manually.
If you mix on headphones, use less reverb than you think you need. Headphones exaggerate the effect.
To prevent low-end mud, apply EQ after reverb and cut everything below 200–300 Hz. This keeps the sense of space without the boomy buildup that makes vocals hard to understand.
Match the reverb decay time to the tempo. Fast songs need shorter decay so the reverb clears before the next phrase. Slow, ambient tracks can use longer tails.

Common Misconceptions

Myth: More reverb always sounds better

Reality: The opposite. Over-reverb is the most common mixing mistake. Less is almost always more, especially on vocals.

Myth: Reverb and echo are the same thing

Reality: Reverb is thousands of blended reflections (smooth wash). Echo/delay is distinct, countable repeats. Very different sounds and uses.

Common Problems and Fixes

Audio sounds washed out and unclear

The mix is too high. Reduce the wet/dry mix. For vocals, 15–25% is usually enough. Also try reducing the Time parameter for a shorter, tighter reverb.

Reverb sounds boomy or muddy

Low-frequency buildup in the reverb tail. Try reducing the Time and Decay settings. If possible, use EQ to cut below 200 Hz after applying reverb.

Reverb tail is cut off at the end

The editor extends the output to capture the tail, but very long decays may still be trimmed. If needed, add a few seconds of silence at the end before applying reverb.

Why Use This Add Reverb to Audio Online

Convolution-based reverb with generated impulse response
Adjustable room size, decay rate, and wet/dry mix
Real-time preview so you can hear the effect before applying
Output is automatically extended to capture the full reverb tail
All processing runs locally in your browser

Frequently Asked Questions

What type of reverb is this?

Convolution reverb. It generates an impulse response shaped by your Time and Decay settings and convolves it with your audio. The result simulates how sound reflects in a room of that size.

How do I get the slowed+reverb sound?

Slow the track to around 0.8x with the Speed tool, then apply reverb with a long time (2–4 seconds), slow decay, and high mix (40–70%). That creates the signature submerged, dreamy effect.

How much reverb should I use on vocals?

Start with a mix around 15–20% and a time of 0.5–1 second. Increase gradually. If the words start getting lost in the wash, back off. Less is almost always more on voice.

Will the output file be longer than the original?

Yes. The editor extends the output to include the reverb tail. How much depends on the Time and Decay settings.

How do I prevent reverb from making my audio muddy?

Low-frequency buildup is the main cause of muddy reverb. After applying reverb, use the Equalizer to cut everything below 200–300 Hz. This keeps the sense of space without the boomy buildup.

My reverb sounds good on headphones but too much on speakers

Headphones exaggerate reverb because there is no natural room reflection competing with the effect. Mix on headphones, then reduce the mix by 10–25% for a safer result that translates to speakers.