Play SPX files in your browser
The open speech codec of voice recorders, VoIP apps and Flash, before Opus took over. Play an SPX right in your browser and keep it as MP3.
Or drop it anywhere on this page
What you'll see
Your sound starts playing the moment it opens, its whole waveform across your screen.
- Its whole waveform • Press or drag to jump
- Back and ahead 10 seconds • Half, 1.5× or double speed
- Show tags • Title, artist, album and cover
- Export • Save as MP3 or WAV
About SPX
Jean-Marc Valin created Speex at the Xiph.Org Foundation, and version 1.0 came out in 2003. Voice recorders, VoIP apps, games and Flash Player used it to send and store speech for free.
Speex records speech at 8, 16 or 32 kHz, at about 2 to 44 kbps, and .spx files hold it in an Ogg container. Xiph.Org has since replaced it with Opus, which sounds better at the same size.
No browser plays Speex by itself. Filepeek decodes it with FFmpeg inside your browser, and Export saves an MP3 or WAV that any app opens.
Speex audio
.spx
Format
- MIME type
- audio/ogg
- Made by
- Xiph.Org Foundation
- Released
- 2003
Inside the file
- Audio
- Speex
- Bitrate
- About 2 to 44 kbps
- Sample rate
- 8, 16 or 32 kHz
- Built on
- Ogg
Opens in every browser
No browser plays Speex by itself. Filepeek decodes it with FFmpeg in Chrome, Edge, Firefox and Safari.
- YouChromePlays through Filepeek
- YouEdgePlays through Filepeek
- YouFirefoxPlays through Filepeek
- YouSafariPlays through Filepeek
Questions
How do I play an SPX file?
Drop it on this page or press Peek an SPX. It plays right in your browser, with nothing to install.
Is Speex the same as Opus?
No. Opus is its successor, from the same people, and sounds better at the same bitrate. Filepeek plays both.
Can I convert it to MP3?
Yes. Choose Export, then Save as MP3. Small, at 128 kbps, is plenty for speech, and the handles on the waveform strip save only a part.
Is my recording uploaded?
No. The recording plays inside your browser and never leaves your device.