Long-play modes.
A disc recorded in a long-play mode keeps less of the treble. The check shows where the sound stops. Sound that reaches past 11 kHz does not count as muffled, and nothing is rebuilt.
SOLIPSIUM Super resolution audio engine
MiniDisc
Transfer and clean up MiniDisc recordings.
Record the disc into the computer as it plays, then drop the file here. Solipsium measures its noise, hum and clipping before it changes anything.
Drop a MiniDisc transfer 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.
WAV, MP3, M4A, MP4 and more, up to five minutes for the check.
Your first 20 seconds
After signing up, drop the same file into the editor to repair all of it.
What Solipsium hears
Make a free account to repair the whole recording
Then drop the same file into the editor. Scans and short repairs are free.
Getting it off the disc
Most decks give their sound up only as they play.
A MiniDisc holds compressed sound. Most players can only send it out as it plays.
Record it as it plays.
Connect the deck's line or optical output to the computer and record each track in real time, as a 16-bit WAV.
Or copy it over USB.
Some later recorders can copy their tracks to a computer over USB with the maker's software. Where yours can, that copy needs no level setting.
Set the level on the loudest track.
Through a line input, the loudest passage must stay under full scale; through an optical input, the level is the disc's own.
Fault by fault
What a MiniDisc recording brings, and what is repaired.
The check in your browser names where the sound stops, background noise, mains hum, clipping and dropouts.
A portable's own microphone.
Lectures and interviews recorded on a portable pick up the room. A steady floor within 26 dB of the voice is cleaned: “A steady noise floor was found, so it is removed.”
A level set too high.
Recording with the level fixed and too hot clips the loudest words. 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.
Hum.
Mains hum picked up on the way into the deck is notched out: “Mains hum was found, so it is notched out before any cleanup.”
Questions
About MiniDisc recordings.
Is the treble lost to compression back?
Not by the measured repairs: a treble rebuild runs only on a phone line's band or a file saved at 16 kHz. In the editor, a free account can run AudioSR on a passage of up to 60 seconds, and what it adds is inferred.
Each track as its own file?
Record each track to its own file, or record the whole disc and cut it with the audio splitter, which can split at long pauses.
Music on the disc?
Solipsium's free try is built for speech. Its cleanup may remove music along with the noise.
Should I keep the WAV or make an MP3?
Keep the WAV as your copy of the disc. Make an MP3 for sharing with WAV to MP3.
Is my recording uploaded?
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
Related free tools.
For transfers and splitting.
- Audio splitter
Split a whole-disc capture at long pauses.
- Audio spectrum check
See where a transfer's sound stops.
- WAV to MP3
Make an MP3 copy for sharing.
- Clean up a cassette tape
Capture a cassette and check it.
- All free audio tools
Every free tool on one page.
The whole recording.
Make a free account and drop the same file into the editor to repair all of it, up to 30 minutes at a time.
Repair the whole recording
Free account, no card.