Newest TWELP vocoder operates now also on extremally low 300 bps bit rate, providing acceptable speech quality (higher than 2.0 PESQ), intellegibility of speech and even recognizability of the speaker voice.
The 300 bps vocoder opens the inaccessible earlier new possibilities of telecommunication on long distances and in hard conditions on HF as well as in other fields, where very high compression of speech is needed.

TWELP 300 bps Vocoder is available now as an object library for any DSP, RISC and other platforms.