Audio tools

Audio Reverb Simulator

Upload an audio file and add a synthetic reverb tail. Adjust decay time and wet/dry mix, preview instantly, and download the result as a WAV.

Upload an audio file to see its waveform here.

How to use the audio reverb simulator

  1. Upload your audioChoose a file. It decodes in your browser and its waveform is drawn to a canvas.
  2. Set decay and mixDrag the decay time slider for a bigger or smaller space, and the wet/dry mix slider for how prominent the reverb is.
  3. Apply, preview and downloadPress Apply reverb, listen to the result, then download it as a WAV file.

How the synthetic reverb works

Real reverb comes from countless tiny sound reflections bouncing around a physical space. This tool approximates that effect with a lightweight, fully synthetic technique: it builds a short burst of noise shaped by a decaying envelope, called an impulse response, and convolves your audio with it using the Web Audio API's ConvolverNode.

Synthetic impulse response

A buffer of random noise is shaped by an exponential decay curve so it starts loud and fades away, mimicking the general shape of reflections dying out in a room.

Convolution

The ConvolverNode mathematically blends every sample of your audio with that impulse response, which is how convolution reverb turns a dry signal into one with a sense of space.

Decay time

Controls how long the synthetic tail takes to fade, from a tight 0.2 second room to a cavernous 6 second hall.

Wet/dry mix

Blends the original dry signal with the reverberated wet signal, so you can add a subtle touch of space or fully drench the audio.

Audio Reverb Simulator FAQ

How does this reverb effect work?

It generates a synthetic impulse response, a short burst of noise shaped by a decaying envelope, and convolves your audio with it using the Web Audio ConvolverNode. This is a common lightweight technique for adding reverb without a real recorded space.

Is this the same as a real recorded reverb?

No. Professional reverb plugins often use impulse responses captured in real halls, chambers or plates. This tool synthesizes its impulse response mathematically from noise, which is lighter weight but less nuanced than a captured space.

What does the decay time control do?

Decay time sets how many seconds the synthetic reverb tail takes to fade out. Longer decay times sound like a larger, more reflective space; shorter ones sound like a small room.

What does the wet/dry mix control do?

It balances the original, unprocessed audio (dry) against the reverberated signal (wet). A low mix adds a subtle sense of space; a high mix sounds much more washed out and distant.

Is my audio uploaded to a server?

No. Decoding, reverb rendering and WAV encoding all happen locally in your browser using the Web Audio API. Your file never leaves your device.

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