Repair each voice on its own.
A noisy room on one side then stays out of the other's repair. With a free account, the editor takes one track per project.
SOLIPSIUM Super resolution audio engine
Free audio tool
Split a stereo recording into a left file and a right file.
A recorder with two microphones often puts one voice on each side. Your browser saves each side as a mono file of its own. Nothing is uploaded.
Drop a recording here
Your browser does the work on this device. Nothing is uploaded.
WAV, MP3, M4A, FLAC, OGG, Opus and more, up to 30 minutes or 200 MB.
Channels
Why split
One voice to each file.
An interview recorded with a microphone on each person often lands as one stereo file: the host on the left, the guest on the right.
Edit each voice on its own.
An editor that mixes tracks can then set each voice's level apart.
Mono saved as stereo.
When both channels are identical, the tool says so: either file holds the whole recording.
How it works
Nothing in the sound changes.
Each channel is copied sample for sample into its own file.
Choose the recording.
Stereo, or up to 8 channels; each becomes one file.
Split it.
The files are named after their side: left and right, or channel 1, 2 and on.
Save each one.
As an MP3 at 192 kbps or a 16-bit WAV, at the file's own sample rate.
Questions
About splitting channels.
How do I put them back together?
An editor that mixes tracks plays them side by side. To fold both into one mono file instead, use stereo to mono.
A recording that plays in one ear?
That is one channel with sound and one without. Stereo to mono can give the sound to both ears.
Will it separate two voices on one microphone?
No. It splits the channels as they were recorded. Two voices on one channel stay together.
Surround sound?
Up to 8 channels are each saved as a file, named by number.
Is my recording uploaded?
No. Your browser opens the file and does the work on this device; nothing is sent to Solipsium. Checking a recording for noise, hum and clipping is another page: the home page checks it in your browser too.
Free audio tools
Related free tools.
For channels and voices.
- Stereo to mono
Fold stereo to mono, or give one ear's sound to both.
- Fix out of phase audio
Find a channel that is upside down, and turn it over.
- Clean up podcast audio
Repair each voice track, then mix.
- Audio file info
See how many channels a file has.
- All free audio tools
Every free tool on one page.
One voice noisier than the other?
Drop that side's file on the home page to check it for noise, hum and clipping, and hear its first 20 seconds repaired.
Check a recording
The check and the 20-second try need no account.