SOLIPSIUMAlpha

For film

Production sound, repaired where it needs it.

Solipsium scans a scene for noise, hum, clipping, clicks and dropouts. It runs the repairs chosen by tests on damaged speech and lists each change with its start and end time.

Try a scene free

Free for a limited time, with no card.

The end-credit badge

What it repairs

Damage that location sound picks up.

Before anything changes, a scan lists each problem and when it happens. Suggested repair then runs the repairs that measured best on that kind of damage.

  • Noise and room echo.

    For traffic, air handling or a hard room, a speech model turns the noise down around the voice.

  • Hum.

    Mains hum at 50 or 60 Hz and its harmonics, found by measurement and notched out in bands a few hertz wide.

  • Clipping.

    Flattened peaks are partly raised back from the undamaged samples around them.

  • Dropouts.

    Gaps of digital silence up to 100 ms are filled from the sound on each side and marked as estimated.

  • Muffled sound.

    Treble lost to a phone line or a file saved at 16 kHz is rebuilt across the whole recording unless the scan finds damage other than steady noise. In the editor, AudioSR rebuilds passages of up to 60 seconds, and rebuilt treble is marked as inferred.

A file can be up to 30 minutes and 1 GB, mono or stereo, so a feature goes in reel by reel.

How it differs

It checks before it changes anything.

The numbers below include the recordings it made worse.

The scan comes first.

It names each problem and where it is before a single sample changes.

Some damage is left alone.

If no repair measured better on a kind of damage, that damage stays as it was.

Every change is listed.

Each repair is listed with its start and end time. Rebuilt treble is marked as inferred, and filled gaps as estimated.

  1. 0:00.000 to 0:05.000Background noise, about 25 dB below the loudest soundLowered around the voice
  2. 0:00.983 to 0:02.801Clipping, 8,817 samplesPeaks rebuilt
  3. 0:02.076 to 0:02.0869 clicksLeft as they were
  4. 0:03.390 to 0:03.795Clipping, 556 samplesPeaks rebuilt
  5. 0:04.114 to 0:04.137Clipping, 42 samplesPeaks rebuilt
  6. 0:04.550 to 0:04.5583 clicksLeft as they were
The scan's list for one five-second test recording from the benchmark: speech with simulated noise and clipping. Each row gives the time, what the scan found and what Suggested repair planned. Suggested repair leaves clicks out of its plan; if you hear them, the editor's Clicks button redraws them.

90.8%

of 1,344 damaged test recordings came out better with the engine of September 29, and 1.4% came out worse. The strongest single tool, run on every recording, made 51.8% better and 46.4% worse. See the engine at work

Measured on September 29, 2026, on a sealed set that was opened once, after the rules were fixed. The recordings are speech with simulated damage, scored by formula. No film sound was measured. That evening it became the engine this site runs. The 90.8% and 1.4% measure the engine's own output. The file the site saved at the time scored lower, 89.7% better and 3.1% worse, because a repaired clipped recording was saved about 1.5 dB quieter and the formula counts level. Suggested repair has changed since, and so has the rule that saved those repairs quieter. The sealed set is scored only once, so there is no new number yet.

The credit

A line in your end credits, if you want one.

If Solipsium processed a film's sound, the film may show this badge. It is free and optional, and either side can withdraw it.

Enhanced with Solipsium, as it sits in end credits

SOLIPSIUM is a trademark of its owner.

In end credits it is the ivory version over black, with its trademark line.

“Enhanced” names the engine that processed the sound; it is not a promise about the result. The badge is a credit and not a certification, because nothing was tested against a standard.

Using the badge

Ask first, then use the files as they are.

  • Enhanced with Solipsium Audio Engine, in ivory

    Ivory (reversed), for end credits over black or a dark picture.

  • Enhanced with Solipsium Audio Engine, in gold and ivory

    Gold and ivory (primary), for near-black backgrounds such as a poster or a website.

  • Enhanced with Solipsium Audio Engine, in near-black

    Ink, for light backgrounds and print.

The rules, in short

  • Ask first, for each film, and wait for a yes.
  • Show it only on a film whose sound Solipsium processed.
  • Use the files as they are: no recolouring, stretching, outlines, shadows, glows or animation. A plain fade with the credits around it is fine.
  • Keep clear space as high as the S in SOLIPSIUM on every side. The files already hold it.
  • In a film frame, make the full badge at least 13% of the picture's width, or the compact one at least 8%.
  • Add the line “SOLIPSIUM is a trademark of its owner.”
  • Never make it the most prominent mark on the film.

The badge kit

First, ask for a yes. Send the film's title, what Solipsium processed, where the badge will appear and whether the release is commercial to:

support@solipsium.com

Then use the files in the kit. It has every version as SVG with outlined letters and as transparent PNG 4000 pixels wide for film, and each has a compact version without AUDIO ENGINE for small sizes. The full rules and the licence are inside.

Download the kit

ZIP, about 1 MB.

Limits

What it does not do.

  • No plug-in for Pro Tools, Premiere or Resolve. You upload a file in the browser and download the repair.
  • No 5.1 or other surround. Mono or stereo only, up to 30 minutes a file.
  • No offline build. Files are uploaded to Solipsium's servers and processed there, not inside your facility.
  • No listening test: the numbers on this page are formula scores on speech.
  • It does not replace iZotope RX in a dubbing theatre.

If you run a studio or post house, tell us what an offline build would need to do:

support@solipsium.com

Start with one scene.

Make a free account, upload the scene, and compare each repair with the original before you keep it.

Try a scene free

Free account, no card.