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Speex SpeexDSP 1.2rc3

The Speex codec (http://www.speex.org/) exists because there is a need for a speech codec that is open-source and free from software patent royalties. These are essential conditions for being usable by any open-source software. In essence, Speex is to speech what Vorbis is to audio/music. Unlike many other speech codecs, Speex is not designed for mobile phones but rather for packet networks and voice over IP (VoIP) application. File-based compression is of course also supported. The Speex codec is designed to be very flexible and support a wide range of speech quality and bit-rate. Support for very good quality speech also means that Speex can encode wideband speech (16 kHz sampling rate) in addition to narrowband speech (telephone quality, 8 kHz sampling rate). Designing for VoIP instead of mobile phones means that Speex is robust to lost packets, but not to corrupted ones. This is based on the assumption that in VoIP, packets either arrive unaltered or don`t arrive at all. Because Speex is targeted at a wide range of devices, it has modest complexity (variable) and memory footprint. All the design goals led to the choice of CELP as the encoding technique. One of the main reasons is that CELP has long proved that it could work reliably and scale well to both low bit-rates (e.g. DoD CELP @ 4.8 kbps) and high bit-rates (e.g. G.728 @ 16 kbps).

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Look at the free or trial alternatives and similar apps to Speex software by the tags. It's possible also to find substitutes for the most popular titles in the Sound & Audio category.

| Xiphg | Speex | Speech Codec | Org | Audio Codec |

History updates (Complete changelogs since the listing on this site)

1.2rc1 [09-16-11]

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Predicted future versions and notices:

The doDownload.com constantly monitors the update of all programs, including information from the Speex SpeexDSP 1.2rc3 changelog file, however sometimes it can happen that data are not complete or are outdated.We assume that author continue's to develop SpeexDSP 1.2rc4 version with further advanced features, and soon you will be informed. Equally important SpeexDSP 2.0 upgrades of the program we will continue to monitor. Full Speex description has been compared with the overall software database and our algorithm has found the following applications (are showed below).