---
title: "Free Audio Reverser – Play Audio Backwards — Nexvert"
description: "Reverse audio files and hear sounds backwards with sample-accurate playback. Free browser-based reversing for MP3 and WAV, with nothing uploaded."
url: https://nexvert.online/audio-reverser/
---

# Free Audio Reverser & Backmasking Tool

Reverse audio files and hear sounds backwards with sample-accurate playback. Free browser-based reversing for MP3 and WAV, with nothing uploaded.

## What is Audio Reverser & Backmasking Tool?

Create eerie reverse reverbs, backwards cymbal swells, and flipped speech effects. The audio buffer reverses sample array indexes chronologically, generating a pristine backwards sound file in milliseconds.

## How to use Audio Reverser & Backmasking Tool

1. **Add your file or input** — Choose a supported file, drag it onto the upload area, or type/paste the data this tool works with.
2. **Adjust the options** — Pick the output format, quality, size or other settings the tool offers. Defaults work well for most files.
3. **Process and download** — Run the tool and save the result. Processing happens in your browser, so nothing is uploaded to a server.

## Frequently asked questions

### How does audio reversal work technically?

The sound file is decoded into floating-point PCM samples in memory. The array order is reversed from the final sample to the first sample and re-encoded into the output audio file.

### Does reversing sound alter its audio quality or sample rate?

No. The sample rate, bit depth, and acoustic frequency spectrum remain identical; only chronological playback direction is inverted.

### Can I reverse only a portion of an audio file?

Yes. You can trim a specific clip using the start and end markers first, then reverse just that segment.

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Source: https://nexvert.online/audio-reverser/
HTML version: https://nexvert.online/audio-reverser/