Audio sample files
MP3 and WAV audio files of known duration for testing playback, upload and transcoding.
Formats in this category
| Format | What it is | Sizes |
|---|---|---|
| MP3 sample files.mp3 audio/mpeg | The most widely supported lossy audio format. | 100 KB to 10 MB |
| WAV sample files.wav audio/wav | Uncompressed audio. Large files with a simple, predictable structure. | 100 KB to 10 MB |
About these files
Audio features need files whose duration, sample rate and bit rate are known in advance, so that what your application reports can be checked against the truth.
The samples contain a short synthesised musical phrase that repeats. It was generated by code, so it carries no music licensing concerns.
Ready-made samples
Hand-designed files with realistic content or a specific edge case.
| File | Format | Size | Contents | Download |
|---|---|---|---|---|
| 440 Hz test tone WAV (3 seconds)sample-test-tone-440hz.wav | WAV | 258 KB264,644 bytes | 3.000 s | Download WAV |
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What to test
- Web development
Placeholder images, media, data and documents for building and demonstrating web interfaces.
- File upload testing
Test an upload form or endpoint with files of every size and type it should accept, and several it should refuse.
- Mobile development
Files for testing uploads, downloads and previews in Android and iOS apps, including on slow networks.
Related categories
Audio files: questions
- Can I use the audio in a demo or product video?
- Yes. The audio is synthesised by our generator and is free to use.