All tools › Change a recording
Remove the silence
Finds the quiet stretches and shortens them, keeping enough of each that two words do not run together.
It runs entirely in this browser tab: the file you open is never uploaded, nothing here listens to a microphone, and every result is a file rather than something that plays.
Settings
- Threshold
- Anything quieter than this is a pause rather than a sound. A number from -60 to -10.
- At least this long
- In seconds. Shorter gaps are breaths rather than pauses.
- Keep of each pause
- Cutting a pause to nothing runs two words together.
- The ends only
- The four seconds of somebody sitting down, and nothing else.
- Bit depth
- Sixteen is the compact disc; float is what a mixing desk hands over. Choices: 8, 16, 24, 32 (float).
How to use it
- Paste your text into the box above, or open a file.
- Adjust the settings beside it until the result is what you wanted.
- Copy the result, or save it as a file. The result updates as you type.
Questions
- Is my recording uploaded anywhere?
- No. The whole application is carried as WebAssembly and runs on your own device. There is no server to send anything to, and none of these tools makes a network request while it works.
- Why does nothing play?
- Because a player would be a second application. Every result is a file to open in whatever you already listen with, and saying so is more honest than drawing a play button that does nothing.
- Does the tuner or the metronome use my microphone?
- No, and the browser will never ask for one: there is no code here that could use it. The tuner reads a file you open, the tempo tool reads times you type, and the metronome writes a click track.
- Which formats can it open?
- WAV is read and written whole. MP3, FLAC, Ogg, AAC and AIFF are recognised and described from their headers — the format, the rate, the channels, the length — but their audio is not decoded, and a tool that needs samples says so by name.
Other tools for change a recording
Reverse audio
Backwards, whole or in part, and the only operation here that loses nothing at all.
Fade in and out
A fade at each end, with the curve that keeps a crossfade even rather than the one that dips.
Normalise the level
To a target peak or a target loudness, which are different numbers, with headroom left for the encoder.
Speed and sample rate
Two different things people ask for as one: playing faster raises the pitch, and resampling does not.
Split the channels
Mono, one side, swapped or panned, with a word about what summing cancels.
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