Vocal Isolation & Stem Splitter
Split a song into isolated vocals and a clean instrumental — or a full drums, bass, and other breakdown. AI separation, processed on our private server.
Unlike our other audio tools, this one needs a server: your file is uploaded to SecureVault's private, network-isolated server, processed, and deleted automatically after about an hour. It is never shared or used for anything else.
About this tool
Vocal isolation, or stem separation, takes a finished mix and pulls it apart into its parts — most commonly an isolated vocal track and a clean instrumental. It can also produce a full breakdown of vocals, drums, bass, and everything else, which is useful for remixing, practicing an instrument, building karaoke tracks, or transcribing a part by ear.
The separation is done by Demucs, an open-source deep-learning model that reconstructs each stem rather than just filtering frequencies. That model is far too heavy to run in a browser, so this tool sends your file to a server SecureVault runs. It is the one tool on this site that uploads your file — and we built it deliberately: it runs on a network-isolated host reachable only through Cloudflare, and every uploaded file and result is deleted automatically after about an hour.
How to use it
Four steps:
- Choose a song, or drag an audio or video file onto the drop area.
- Pick whether you want vocals plus instrumental, or the full four-stem split.
- Choose MP3 for small files or WAV for lossless quality.
- Select Separate, wait for processing, then download each track.
Processing takes roughly half the length of the song on a standard machine, so a three-minute track is around a minute and a half. There is a size and duration limit per job to keep things quick and fair.
Common questions
How is this different from the browser-based audio tools?
Stem separation uses a deep-learning model that is too heavy to run in a browser, so this tool processes your file on SecureVault's own private server. Unlike our converter and trimmer, the file is uploaded — it is handled on an isolated host and deleted automatically after about an hour.
How good is the separation?
It uses Demucs, a state-of-the-art open-source model, and results are very good on most music. Some faint bleed can remain in dense passages, and a cappella-quality isolation is not guaranteed. A higher-quality, slower model can be enabled for difficult tracks.
What files and lengths are supported?
Common audio and video containers are accepted, including MP3, WAV, M4A, MP4 and MOV. There is a size and duration limit per job to keep processing quick and fair; longer tracks may need to be split first.
For quick format changes or a rough vocal-reduction that runs entirely in your browser, see the audio converter and pitch shifter. Need custom audio or media processing at scale? That is our development and automation practice.