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SPX
Ogg Speex
Ogg Speex is an audio compression format designed for speech and is based on the open source Speex codec.
Main usage
Ogg Speex is mainly used for voice over IP (VoIP) applications, such as Skype, and for audio streaming applications, such as online radio.
- Low bitrate
- High quality speech compression
- Supports variable bitrate
Main features
WMA
Windows Media Audio
Windows Media Audio (WMA) is an audio data compression technology developed by Microsoft.
Main usage
WMA is mainly used for streaming audio over the internet, as well as for audio files stored on computers and mobile devices.
- High compression ratio
- Supports DRM
- Supports multi-channel audio