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| | Speex 1.2 beta 2
Updated: 4 Jun 2007 | Freeware | 588KB | Downloads: 11957 | Screenshots
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Speex is an Open Source/Free Software patent-free audio compression format designed for speech. The Speex Project aims to lower the barrier of entry for voice applications by providing a free alternative to expensive proprietary speech codecs. Moreover, Speex is well-adapted to Internet applications and provides useful features that are not present in most other codecs.
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Speex is based on CELP and is designed to compress voice at bitrates ranging from 2 to 44 kbps. Some of Speex features include:
- Narrowband (8 kHz), wideband (16 kHz), and ultra-wideband (32 kHz) compression in the same bitstream
- Intensity stereo encoding
- Packet loss concealment
- Variable bitrate operation (VBR)
- Voice Activity Detection (VAD)
- Discontinuous Transmission (DTX)
- In-progress fixed-point port.
Changes in Speex 1.1.12 unstable :
- Not available yet.
Changes in Speex 1.0.5 :
- The main change with this release is that it includes API additions from the 1.1.x branch (while being backward compatible), so that transition from 1.0.x to 1.1.x can be made easier.
• Related downloads:
- Speex Voice ACM Codec: the Speex ACM wrapper allows you to use Speex voice compression codec in WAVE and AVI files on any 32 bit Windows operating system!
- Winamp Speex decoder: is needed to play Speex (.spx) files with Winamp (2 or 5).
- DirectShow Filters for Ogg Vorbis, Speex, Theora and FLAC: installing this package you will be able to play Ogg Vorbis, Ogg Speex, Ogg Theora and Ogg FLAC with Media Player or any other DirectShow application.
- Acelp.net Audio Codec: is a speech codec for Windows Media Player, developed by VoiceAge.
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