Dual-rate speech coder runs on faster DSP

Spirit has released a new top-performance version of its G.723.1 vocoder algorithm for TI's TMS320C62x platform.

Spirit has released a new top-performance version of its G.723.1 vocoder algorithm for TI's TMS320C62x platform.

G.723.1 is a dual-rate speech coder standard from the ITU-T for VoIP.

The thoroughly optimised algorithm achieves an unprecedented level of resource economy - as low as 7.3 MCPS on C62x chip - at the same time offering high quality of speech compression.

G.723.1 is a middle-bitrate vocoder that delivers the highest compression ratio of any of the current ITU standards without compromising speech quality.

It can perform full duplex compression and decompression functions for multimedia, visual telephony, wireless telephony, and videoconferencing products.

"We are proud to say that with this latest upgrade, our G.723.1 became a definite worldwide leader in resource economy competition", stated Spirit's CEO, Andrew Sviridenko.

"We believe that its low resource requirements, combined with high speech compression ratio and good quality, will make Spirit's G.723.1 an ideal solution for any parties working with C62x platform".

The code is fully compliant with the ITU G.723.1 recommendation and conforms to TI's eXpressDSP standard, which ensures high compatibility with other XDAIS-compatible DSP algorithms and portability to a multitude of DSP and RISC-based platforms.

In the near future, Spirit plans to port more of its most demanded DSP algorithms - G.729AB, G.168 etc - to the TI C62x platform.

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