Audio Viewer

Viewing audio dataset files

Audio datasets ship as ordinary sound files: uncompressed WAV, or compressed MP3, FLAC, Ogg and M4A. When you are assembling or auditing a speech or music dataset, you often just want to confirm a clip’s length, sample rate and channels, and hear it, without opening a heavy audio editor.

ViewKit decodes the file with the browser’s Web Audio engine, draws the waveform, reports the duration, sample rate and channel count, and gives you a player. Everything happens on your device and nothing is uploaded.

What you can do with the Audio viewer

How to open a Audio file

1. 1

   Drop your audio file onto the box above (or click to browse). It is read in your browser, nothing uploads.

2. 2

   The waveform is drawn and the duration, sample rate and channels are shown.

3. 3

   Press play to listen using the built-in controls.

Doing the same thing in code

Reading the metadata in Python:

import soundfile as sf

info = sf.info("clip.wav")
print(info.duration, info.samplerate, info.channels, info.subtype)

data, rate = sf.read("clip.wav")   # reads the whole clip into memory

soundfile reports the duration, sample rate and channels. Drawing the waveform requires matplotlib, and playback requires a separate library. This page shows the metadata, the waveform and a player together.

Audio viewer: frequently asked questions