In contrast to any other LBR vocoders, TWELP vocoder provides natural high-quality sounding of speech as well as any non-speech signals even on such low bit rate as 1200 bps. These features make TWELP vocoder well suitable not only for HF Radio and military communications, but also for wide usage in other commercial products, including DMR/dPMR and other applications where low bit rate in conjunction with high quality are required. 

TWELP 1200 bps Vocoder is available now as an object library for any DSP, RISC and other platforms.