SOLIPSIUMAlpha

SOLIPSIUM Super-resolution audio engine

Echo in a video

Remove echo from a video shot in a bare room.

Drop the video and Solipsium checks its sound first, because what else it finds decides whether echo reduction runs.

Drop a video with echo

Solipsium checks its sound in your browser, without uploading the video. It can then repair 20 seconds of the sound for you to hear, with no account.

MP4, MOV, MKV or WebM, up to five minutes for the check.

Choose a video

What it is

The picture stays as it was.

Solipsium repairs noisy or damaged recordings. That includes the sound of a video: the echo reducer works on the sound, and a video export keeps the original picture.

  1. The check reads the sound.

    When your browser can open the video, the check names background noise, mains hum, clipping, dropouts and muffled sound. Echo is measured on Solipsium's server, once you ask for the try.

  2. The try repairs 20 seconds of sound.

    This page writes those 20 seconds as a WAV file and sends them without the picture. The repair comes back as sound alone, to play against the original.

  3. The editor repairs the whole video.

    With a free account, you watch the picture in sync while the editor repairs the sound, and the export keeps the original picture.

How it is repaired

Echo has its own reducer.

In the try it works on 20 seconds; in the editor it works through a long video about 20 seconds at a time.

It runs when echo is found.

With no steady noise, other voices, music or muffled sound beside the echo, the try reduces it and lists the reason: “Room echo seems to blur the speech, so echo reduction is used.” Hum, clipping and dropouts are repaired first and do not stop it.

Noise comes first.

When the video also has a steady noise floor, Full-band speech cleanup runs and echo reduction does not. The try runs at most one cleanup.

In the editor, you set the echo yourself.

With a free account, Custom cleanup sets noise, room echo and passage volume on their own. With room echo on, it takes one passage of up to 20 seconds; Suggested repair works through a longer video about 20 seconds at a time.

Questions

When the echo stays.

Why did the echo stay?

With steady noise, other voices, music or muffled sound beside the echo, the reducer stays off, and the try lists its reasons beside the result. Hum, clipping and dropouts do not stop it.

Will all the echo go?

No, it is reduced. Switch between Original and Repaired as they play and listen to the ends of words, where the room rings longest.

Does it change the picture?

No. A video export keeps the original picture with your repaired soundtrack, and leaves out any other audio tracks and subtitles.

How do I film the next video with less echo?

Move the microphone closer to the speaker, and film in a room with curtains, a rug or soft furniture. Bare walls and a hard floor ring after every word.

Is my recording uploaded?

Not for the check, which runs in your browser. Pressing Repair the first 20 seconds sends those 20 seconds of sound as a WAV file. If your browser could not open the video, or it runs over five minutes, the whole file, picture included, goes to Solipsium's server instead, up to 25 MB. Solipsium keeps only those 20 seconds of sound and deletes them within an hour. If you are signed in, a video you drop or choose is uploaded to your account and opens in the editor instead. The privacy notice has the rest.

Free audio tools

Related free tools.

These cover a video's sound, and echo in a sound file.

Want Solipsium to do the whole recording the same way?

The editor repairs the sound of the whole video, up to 30 minutes at a time, and exports it with the original picture.

Repair the whole video

Free for a limited time, whole recordings included. No card.