All tools › Read a recording
Sound file info
Format, rate, channels, length and bit rate, read from the header — of six formats, not one.
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
- List the formats
- Which of the six are read whole and which only in the header.
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 read a recording
Levels and dynamics
The peak, the loudness and the gap between them, which is the number that says what kind of recording it is.
Waveform image
The shape of a recording as an SVG, drawn from peaks because every sample would be a solid block.
Spectrum analyser
Which frequencies one moment holds, with the trade between time and frequency stated in numbers.
Find the pitch
What note a recording is playing, in cents, at whichever concert A you use. A tuner for a file, not a string.
All twenty-three tools