SOLIPSIUMAlpha
SOLIPSIUM Super resolution audio engine
Dashcams
Copy the clip off the camera's card and drop it here. Solipsium checks its rumble, fan noise and wind before it changes anything.
Drop a dashcam clip 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 clip's sound in your browser. The try repairs the first 20 seconds on Solipsium's server and lists a reason for each step.
Tyres on the road fill the band under 100 Hz. When no cleanup ran before it, the low band is turned down last: “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.”
The car's fan on full is a steady floor. A steady floor within 26 dB of the voice gets Full-band speech cleanup, a speech model that keeps the voice's full range and lowers what surrounds it. The result reads: “A steady noise floor was found, so it is removed.”
An engine's tone follows its speed, not the mains, so the hum notches leave it. What falls in the low band can come down with the rumble.
Steady wind is rumble. A gust that overloaded the microphone is distortion, which no step undoes.
The clip
Dashcams overwrite their oldest clips. Save the one you need before it goes.
Most dashcams have a button that keeps a clip from being overwritten. Copy it from the card to a computer or phone.
Work on a copy. A repaired copy is a changed file.
Some cameras record sound at a low rate. The check shows where yours stops; one that stops near 8 kHz gets the 16 kHz rebuild: “The recording seems to have been saved at 16 kHz, so nothing is left above 8 kHz. The treble is rebuilt from the sound below it, which is kept as it was. What is added is inferred.”
Questions
It can lower the rumble and the fan around the voices. It does not write speech, and words the microphone did not pick up cannot come back.
A tick now and then is a short sound, which the try leaves. In the editor, with a free account, drag a box on the spectrum over the time and pitch of a sound, then turn it down or redraw it from the sound around it. Nothing outside the box changes.
No. With a free account, a video export keeps the original picture with the repaired sound track.
That depends on where you drive: some places expect passengers to be told. Check the rules where you live.
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 low sound and the clip itself.
Low rumble turned down below 300 Hz.
Road roar and truck rumble under a voice.
Cut the moment you need out of a long clip.
A doorbell or camera clip's sound.
Every free tool on one page.
Make a free account and drop the clip into the editor to repair its sound, with the picture kept as it is.
Free account, no card.