The newest TWELP vocoder operates now also at extremely low 300 bps bit rate, providing an acceptable speech quality (higher than 2.0 PESQ), an intelligibility of speech and even a recognizability of the speaker voice.
The 300 bps vocoder opens inaccessible earlier new possibilities of telecommunication at long distances and in hard conditions at HF as well as in other fields, where a very high compression of speech is required.
TWELP 300 bps Vocoder is available now as an object library for any DSP, RISC and other platforms.