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What is SPEEX?

Speex is an Open Source/Free Software patent-free audio compression format specially designed for speech. It is based on CELP and is designed to compress voice at bitrates ranging from 2 to 44 kbps.

Speex provides a free alternative to expensive proprietary speech codecs thus lowering the barrier of entry for voice applications. The advantage of Speex is that it is well-adapted to Internet applications and provides useful features that are not present in most other codecs (intensity stereo encoding, integration of multiple sampling rates in the same bitstream, and a VBR mode). Being part of the GNU Project Speex is available under the Xiph.org variant of the BSD license.

See more about SPEEX

You won't be able to play SPX files on most of modern audio players unless you convert them to MP3, WAV, WMA. Try Total Audio Converter. It converts spx files in 3 steps and preserves the quality of your music.

Audio converter
  • SPX to AAC, WMA, WAV, APE
  • SPX to iPod, iPhone, iPad
  • SPX to any cell phone
convert audio
Total Audio Converter supports the following conversions with SPX format files:
  • SPX to MP3
  • SPX to WMA
  • SPX to WAV
  • SPX to OGG
  • SPX to FLAC
  • SPX to AAC
  • SPX to MP4
  • SPX to MPC
  • SPX to APE
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