sonic
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Your Audio Studio.
Your twist.
Your sound.

Turn a recording into something that feels like you. Slow it down, take it somewhere new, or build a whole new atmosphere.

≋ Reverb 51% mix
♫ Slowed 0.8× speed
SONIC / ORIGINAL MIX•••
ssonic sessions
FIND YOUR
FREQUENCY.
Midnight in motionSonic sessions · Vol. 01
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01:2403:48
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24 ways to make it yours
Reverb ✦ Sped up ✦ 8D audio ✦ Bass boost ✦ Pitch shift ✦ Equalizer

Less setup.
More experimenting.

  1. 01

    Bring your track

    Upload audio from your device, or explore with a sample.

  2. 02

    Make your changes

    Focus on one effect or combine a few. Every setting is yours to adjust.

  3. 03

    Listen. Refine. Keep it.

    Compare your result, revise as often as you like, and download a WAV.

An online audio editor for your next idea.

From a subtle adjustment to a completely different atmosphere, make room for the sound you have in mind.

A free Audio Studio, right in your browser

Sonic is an Audio Studio for shaping recordings, experimenting with music, and hearing your ideas take form. Upload a file, choose an effect, adjust its parameters, and listen to the result. You can focus on one change or build a combination of effects on the same audio. The controls stay approachable whether you are exploring your first edit or trying several versions of a familiar track.

This free audio editor runs locally in your browser without an account. Your audio stays on your device while you work. Compare the original recording with your processed result, revise your settings as often as you need, and download your chosen version as a WAV file. Start with the included sample if you want to explore before uploading a recording.

How to use the audio editor online

Choose one effect for a focused workspace with an explanation of that effect and its parameters. Choose the combination Audio Studio when you want several changes on the same sound. Upload a browser-compatible audio file, make your adjustments, then click Apply effects. Processing starts when you apply, so you can set your controls before committing to a new result.

Use the playback controls to play music, switch between Original and Result, and click the waveform to jump to a particular moment. Listen to both quiet and busy sections before deciding whether a change suits the whole recording. Files can be up to 50 MB and ten minutes long; decoding support depends on your browser. The final download uses the decoded sample rate and a 16-bit WAV format.

Audio reverb: give a recording a sense of space

Reverb adds reflections and a decaying tail that make a sound feel as though it belongs in a room. Use audio reverb to add atmosphere to an instrument, soften a dry recording, or explore a more spacious texture. The room size changes the decay, while reverb mix controls the balance between the original sound and the reverberated signal.

Sonic's reverb generator includes starting presets such as Vocal, Small room, Church hall, and Cathedral. For bathroom reverb, choose the Bathroom preset and adjust the mix while listening to short notes or spoken phrases. When creating reverb music, leave enough clarity for the main melody and rhythm. A larger room or wetter mix can sound dramatic, but it can also blur fast passages. The rendered file includes the reverb tail.

Make a slowed reverb version or speed things up

The slowed reverb generator combines slower playback with a reverb mix. Its default speed is 80 percent and its default mix is 35 percent. Slowing the audio also lowers its pitch, giving the track a deeper character. If you searched for a slowed reverb gen, this workspace lets you control both parts of the treatment and compare each revision with your original.

For a brighter, quicker interpretation, try Sped up: increasing playback speed also raises pitch. Tempo control changes duration while aiming to retain pitch, whereas Pitch shift changes pitch while preserving duration. These options serve different purposes, so choose according to whether you want to change the pace, the register, or both. Listen for artifacts when making large adjustments.

Explore 8D audio and shape your frequencies

The 8D audio converter moves sound between the left and right channels with adjustable rotation speed and movement depth. Listen with stereo headphones to judge the motion clearly. 8D audio here is a stereo panning effect; it does not create a true multichannel surround recording. Start with gentler movement if you want the motion to sit behind the music rather than dominate it.

Use Bass boost for low-end weight, Treble to soften or brighten higher frequencies, and the eight-band equalizer for more targeted changes. Loudness adjusts overall level, while Stereo panner and 3D stereo shape placement and width. Reverse audio, Telephone / radio, Distortion, Trimmer, and 432 Hz tuning offer other ways to explore a recording. Small adjustments and comparisons often make choosing a setting easier.

Combine effects without repeating completed work

In combination mode, each effect processes the output of the effect before it, following the displayed chain order. After you apply a chain, adding another effect reuses the completed output. The editor does not need to render those unchanged earlier stages again. You can browse each included effect to adjust its settings without losing the values you chose for the others.

If you change or remove an earlier effect, its dependent later stages are updated so the result reflects your current choices. Applying unchanged settings reuses the existing processing. Resetting the session or replacing the source starts a fresh audio workflow. Your original remains available for comparison, and the Download button keeps the last successfully applied version while you experiment.

Working with music from your own collection

You may discover ideas while listening through YouTube Music, Apple Music, Amazon Music, or Pandora Music. Sonic works with compatible audio files you upload from your device. It does not connect to those services, import their catalogues, download tracks from streaming links, or unlock protected files. Use your own recordings or audio you have permission to edit and share.

People searching for echo audio may also be exploring spacious sound, but echo and reverb are different treatments. Echo repeats a sound distinctly; reverb creates a denser sense of reflections and decay. Sonic currently provides reverb and slowed reverb, with no separate echo or delay effect. Choose the tool that matches the sound you actually want, rather than expecting every time-based effect to behave the same way.

Listen, revise, and keep your favourite version

An online audio editor makes experimentation convenient, but listening remains the most useful part of the process. Compare at a comfortable playback volume, check a few sections, and adjust one parameter at a time when you are unsure what changed. Sonic gives you room to keep revising, then export a WAV when the result feels right. Choose an effect or open the combination editor to begin.

Your audio questions,
answered.

Get to know your Audio Studio, from your first edit to reverb, moving stereo sound, and a slower pace.

How can I edit an audio?

Open Sonic Audio Studio, upload a compatible audio file, and choose a single effect or combination mode. Adjust the settings and click Apply effects, then switch between Original and Result to hear the difference. Click the waveform to check any section, revise your settings as often as you like, and download the last applied result as a WAV file.

What is the best audio editor for free?

The best free audio editor depends on what you want to make. Sonic is a convenient option for browser-based effects, local audio processing, and quick WAV exports without an account. For detailed multitrack recording, arrangement, or mixing, look for an editor designed around those features. Choose based on your workflow rather than expecting one tool to be best at everything.

What is reverb in audio?

Reverb is the collection of reflections that linger after a sound is produced in a space. An audio reverb effect recreates that sense of space digitally, adding a decaying tail to a recording. In Sonic, Room size changes the decay and Reverb mix balances the original signal with the reverberated sound.

Which reverb is best?

There is no single best reverb for every recording. A small-room sound can add subtle space, while a larger hall can create a longer, more dramatic atmosphere. Start with a preset that suits your goal, then adjust the mix so the main sound remains clear. Sonic includes Vocal, Bathroom, Small room, Medium room, Large room, Church hall, and Cathedral presets.

How can I convert audio to reverb?

Open the reverb generator, upload your audio, and choose a preset or adjust Room size and Reverb mix. Click Apply effects to render the reverberated version, compare it with the original, and download the WAV. You are adding an effect to the audio rather than converting it to a special reverb file format.

Is reverb good for music?

Reverb can give music depth, atmosphere, and a sense of shared space between sounds. Its usefulness depends on the recording and the style you want. Too much can blur lyrics, soften percussion, or make a busy mix less clear. Compare the dry and processed versions and start with a modest mix when clarity matters.

What are types of reverb?

Common reverb sounds include room, hall, chamber, plate, and spring. Room and hall sounds suggest acoustic spaces; plate and spring sounds take their character from mechanical reverberation devices. Digital reverbs often use algorithms or convolution with an impulse response. Sonic uses a generated impulse response with early reflections; its presets are starting settings, not separate models of every reverb type.

How do I reverb a song?

Upload a song you have permission to edit into Sonic’s Reverb workspace. Choose a preset, adjust Room size and Reverb mix, then click Apply effects. Check both sparse and busy sections before exporting. Reverb applies to the uploaded track as a whole, including its vocals and instruments; Sonic does not separate those parts.

What does 8D audio do?

8D audio usually describes a stereo effect that makes sound seem to move around the listener. Sonic’s 8D audio converter moves the signal between the left and right channels with adjustable Rotation time and Movement. Stereo headphones make that movement easier to hear. The result remains two-channel audio, not eight physical sound channels.

Is 8D audio good for ADHD?

8D audio is not an established ADHD treatment, and a moving stereo effect should not be presented as a proven way to improve attention. Some listeners may enjoy it; others may find the movement distracting. Choose audio according to your comfort and task. For information about ADHD care, see the National Institute of Mental Health’s ADHD guidance.

What is 16D sound?

“16D sound” is an informal online label, rather than a standard audio channel format. Creators may use it for mixes with moving stereo elements, panning, or other spatial effects, and the technique varies between tracks. The label does not mean that a normal stereo file contains sixteen physical dimensions or sixteen speaker channels. Sonic offers an adjustable 8D stereo movement effect.

Is 8D music good for the brain?

Enjoying music can influence how you feel, but that does not establish a special brain-health benefit for an 8D panning effect. Research about music-based health interventions should not be treated as proof that 8D music improves intelligence or treats a condition. Listen at a comfortable volume and stop if the movement feels unpleasant. Read the NCCIH overview of music and health for research context.

What is an equalizer in music?

An equalizer, or EQ, adjusts the level of different frequency ranges in audio. You can boost or reduce low frequencies for weight, midrange frequencies for presence, and higher frequencies for brightness. Sonic’s eight-band equalizer gives you separate controls from 60 Hz to 16 kHz. Start with small changes and compare the result with your original recording.

What is a slowed reverb?

Slowed reverb is a music treatment that combines slower playback with added reverberation. Slower playback lengthens the track and lowers its pitch, while reverb adds reflections and a trailing sense of space. Sonic’s Slowed + reverb effect lets you set the speed and reverb mix together, with defaults of 80 percent speed and 35 percent mix.

How do I slow down reverb a song?

Open the slowed reverb generator and upload a song you have permission to edit. Choose your Speed and Reverb mix, then click Apply effects. A speed below 100 percent slows the song and lowers its pitch. Listen to the result, adjust either control, and apply again until you are happy with the version you want to download.

Why do slowed and reverb sound better?

Whether slowed and reverb sounds better is a matter of taste. A slower pace gives notes and rhythms more time to unfold, lower pitch changes the character of voices and instruments, and reverb can create a spacious atmosphere. Those changes may suit a relaxed or dreamy mood, but they can also reduce clarity or energy. Compare versions and choose the sound that fits your track.

LET’S MAKE SOMETHING YOURS

How do you want to create?

Choose your starting point. You can switch modes in the studio.

♪01 / FOCUS

One effect

Choose any one of our 24 effects and dial in exactly the sound you want.

Open single-effect studio≋02 / EXPERIMENT

Combine effects

Layer multiple effects on the same track, with separate settings for each.

Open combination studio