Castleton Network Systems - G.729 Voice Coder
- Platform: TI TMS320C5x DSP
G.729, also called CS-ACELP (Conjugate-Structure Algebraic Code Excited Linear
Prediction), is a state-of-the-art voice compression ITU (International
Telecommunications Union) standard that can be used in a wide range of
applications including wireless communications, digital satellite systems,
packetized speech and digital leased lines. G.729 provides 8000 bits/s
bandwidth for compressed speech at toll quality (equivalent to G.726 32 kbit/s
ADPCM under clean channel condition). Also, G.729 has lower complexity and
lower bit rate than G.728.
The Castleton G.729 implementation provides a bit-exact implementation of the
ITU standard on a single TI TMS320C5x DSP. The software is C
callable and fully re-entrant, which allows easy interfacing and multi-channel
capability. The encoder and decoder are fully independent, therefore, a DSP
device can run a number of full-duplex or half-duplex channels. The coder and
the decoder are able to operate under a real-time task switching kernel.
- Cost and Availablity: Contact Castleton Network Systems.
- Contact: Castleton Network Systems Corporation
350 Terry Fox Drive, Kanata, Ontario, Canada K2K 2W5
Ph: 613-591-8786, Fax: 613-591-8783
Section 3 of the
comp.speech FAQ Home Page.
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Last Revision: 13:54 09-Oct-1996