Your browser opens the file.
Your browser's own decoder reads it on this device at 44.1 kHz, the sample rate of a CD, and the page draws its waveform from those samples.
SOLIPSIUM Super resolution audio engine
Free audio tool
Cut a recording to the part you keep, and fade the ends.
Set the start and end with two handles or type the times. Add a fade of up to 5 seconds at either end. Play the cut, then save it as an MP3 or a WAV.
Drop a recording here
Your browser cuts it on this device. It stays on your device until you ask for a repair.
MP3, M4A, WAV, FLAC, OGG, Opus, WebM or AAC, up to 30 minutes or 200 MB.
Your recording
The two fades are longer than the cut, so both are shortened until they meet.
Save the cut
This file has more than two channels, so the cut is saved in stereo.
Check the cut for noise
The quick check listens to the cut in your browser for background noise, hum, clipping, dropouts and muffled sound. Solipsium's free try is built for speech, and after the check you can hear the cut's first 20 seconds repaired with no account.
The check and the try take a cut of five minutes or less.
Your first 20 seconds
After signing up, drop the recording or the saved cut into the editor to repair all of it.
What Solipsium hears
Make a free account to repair the whole recording
Then drop the recording or the saved cut into the editor. Scans and short repairs are free.
How it works
The cut is made from the decoded sound.
The whole file is decoded first, and the cut is a slice of those samples with the fades applied. Saved as MP3, the cut is compressed again; saved as WAV, it is not.
The handles choose the samples.
Everything between the start and the end is kept. A fade in rises from silence and a fade out falls to it, each along a smooth curve. A short fade keeps a cut in the middle of a sound from clicking.
The cut is saved.
The MP3 has a constant bitrate, 192 kbps unless you choose 128, 256 or 320. MP3 files are made with lamejs, a JavaScript port of LAME, under the GNU LGPL. The WAV holds 16-bit samples.
Questions
Before you cut.
Does cutting an MP3 lose quality?
A little, if you save the cut as MP3, because the cut is compressed a second time. At 192 kbps or more the loss stays small. A WAV is not compressed, so it is much larger.
How long should a fade be?
Half a second softens a cut that lands in the middle of a word. Two to five seconds suits the end of a piece of music. Leave a fade at 0 for a hard cut.
Can I cut a recording into several parts?
The audio splitter cuts a recording at equal lengths, at times you type or at long pauses, and saves each part.
Can I make a ringtone here?
You can cut and fade the part you want and save an MP3. The ringtone maker cuts up to 30 seconds, saves an M4R or an MP3 and gives the steps for an iPhone or an Android phone.
How precise is the cut?
The handles move in steps of 10 ms, and the arrow keys move a focused handle one step at a time. Typed times are kept to a hundredth of a second, as 1:23.45 or as 83.45 seconds.
Can I try the repair on part of a long recording?
Yes. Cut the part you want to hear, up to five minutes, and press Check the cut. The free try then repairs the first 20 seconds of the cut.
Is my file uploaded?
Not to cut it. Your browser opens, cuts and saves the file on this device, and Solipsium's check of the cut runs in your browser too. Audio is sent only if you press Repair the first 20 seconds: then the cut's first 20 seconds leave this browser, and Solipsium repairs them on its server and deletes them within an hour.
Why will my file not open here?
This page opens what your browser can decode. AIFF and CAF files open only in Safari, and AMR voicemails do not open in Chrome, Edge or Firefox.
Noise under the voice?
The background noise page checks a recording of up to five minutes in your browser and offers the same free try.
Check a recording
The check and the 20-second try need no account.