SOLIPSIUMAlpha
SOLIPSIUM Super resolution audio engine
Vlogs
Drop the video here. Solipsium checks its sound for wind, noise, echo and clipping before it changes anything, and leaves the picture alone.
Drop a vlog here
Solipsium checks it in your browser for clipping, hum and noise, without uploading it. It can then repair the first 20 seconds for you to hear, with no account.
MP4, MOV, MKV, WebM, WAV, MP3 and more, up to five minutes for the check.
After signing up, drop the same file into the editor to repair all of it.
Then drop the same file into the editor. Scans and short repairs are free.
Fault by fault
The check reads the video's sound in your browser. The try repairs the first 20 seconds on Solipsium's server.
Steady low wind is rumble, turned down last when no cleanup ran: “Low rumble was found under the voice, so after every other step the steady noise below 300 Hz is turned down towards the recording's own quiet level, with one fixed curve for the whole recording; where the recording is much louder than the rumble at a frequency, that frequency keeps nearly all of its level.”
A steady floor within 26 dB of the voice is cleaned: “A steady noise floor was found, so it is removed.”
Echo reduction runs only when echo is the one thing found, with no steady noise, music, hum, clipping or muffled sound beside it. On a longer recording it works about 20 seconds at a time. The result reads: “Room echo seems to blur the speech, so echo reduction is used.”
Flat tops up to 10 ms long are partly raised back from the undamaged samples around them, never more than 2.3 dB over the clip level. A top that is unsafe to raise is left exactly as it was.
Filming
Distance and wind do more to a phone's sound than anything after it.
A phone at arm's length hears the room as well as you. A small microphone on your collar hears you.
A foam or fur cover keeps wind off it. Wind that overloads a microphone is distortion no step undoes.
Curtains, a sofa and a rug keep a room from ringing.
Questions
No. With a free account, the editor repairs the sound while you watch the picture, and a video export keeps the original picture with the repaired track.
Solipsium's free try is built for speech, and its cleanup may remove music. Add the music after the repair.
Increase video volume makes a video's sound louder with a limiter, and keeps its picture.
The editor takes videos of up to 30 minutes and 1 GB. Cut a longer one with the video trimmer.
Not for the check, which runs in your browser. Pressing Repair the first 20 seconds sends those 20 seconds; when your browser could not open the file, or it runs over five minutes, the file itself goes to Solipsium's server, so the try is offered for it only up to 25 MB. Solipsium keeps only the first 20 seconds and deletes them within an hour. If you are signed in, a file you drop or choose is uploaded to your account and opens in the editor instead. The privacy notice has the rest.
Free audio tools
For the video and its sound.
Make a video's sound louder, picture kept.
Check any video's sound and hear 20 seconds repaired.
Wind turned down below 300 Hz.
Fit a video to a size you type.
Every free tool on one page.
Make a free account and drop the video into the editor to repair its sound, with the picture kept as it is.
Free account, no card.