The updated TWELP 480 bps vocoder, working on much lower bit rate, provides better speech quality in comparison with well-known MELPe 600 bps vocoder.

Available right now for wide set of DSP and RISC platforms. Can be ported onto any other platform within 1-2 months.

Please visit this page for details:

TWELP 480 bps Vocoder

Newest TWELP 700 bps vocoder provides very high speech quality- on 0.1+ PESQ better than TWELP 600 bps vocoder and on 0.3-0.4 PESQ (!!!) better than well-known MELPe 600 bps vocoder.

High quality of speech, sounded more naturally and intelligibly, the bit rate that now is free of any export restrictions, make this vocoder available for wide spectrum of commercial products on the world market.

Available right now as an object library for wide set of DSP and RISC platforms and for any other platforms within 1-2 months after request.

Please visit this page for details:

TWELP 700 bps Vocoder

 

BARRETT HF SDR 4050 (as well as 2050) tranceivers provide high quality of Digital Voice using our TWELP vocoders.

Please watch/ hear this video for details:
Barrett 4050 HF SDR - Analogue vs Digital Voice Demonstration

BARRETT 4000 SERIES HF RADIO CATALOG

BARRETT 2050 HF SSB Transceiver