The newest TWELP vocoder provides a more natural and a much more intelligible sounding of speech by setting new a standard of speech quality at such a low bit rate as 600 bps.
A superiority of TWELP 600 bps over MELPe 600 bps is so high that it exceeds the competitor on average on 0.13 PESQ and even on more than 0.2 PESQ for some languages.
TWELP 600 bps Vocoder is available now as an object library for any DSP, RISC and other platforms.