Updated TWELP 480 bps vocoder is now better than MELPe 600 bps

 
LanguageTWELP 480 bpsMELPe 600 bps
American 2.451 2.397
Arabic 2.3 2.254
British 2.506 2.414
Chinese 2.319 2.189
Danish 2.355 2.227
Dutch 2.209 2.173
Finnich 2.264 2.249
French 2.405 2.34
German 2.364 2.287
Greek 2.323 2.212
Hindi 2.408 2.403
Hungarian 2.394 2.359
Italian 2.536 2.428
Japanese 2.482 2.436
Norwegian 2.292 2.225
Polish 2.328 2.294
Portuguese 2.404 2.393
Russian 2.294 2.156
Spanish 2.385 2.389
Swedish 2.45 2.43
Average2.373452.31275

Superiority of the TWELP 480 is on average 0.061 PESQ

  

 



Newest TWELP Robust 600 bps vocoder is reliable in noisy channel as much as in clear channel

 
BER %MELPe 600TWELP 600 RobustTWELP 600
0.00 2.313 2.373 2.51
0.10 2.251 2.357 2.435
0.20 2.205 2.334 2.345
0.30 2.167 2.32 2.293
0.40 2.104 2.283 2.21
0.50 2.069 2.266 2.136
0.60 2.007 2.247 2.056
0.70 1.971 2.233 1.985
0.80 1.925 2.204 1.939
0.90 1.880 2.184 1.895
1.00 1.845 2.142 1.859

 


 

 Newest TWELP 700 bps vocoder is free of export restrictions and provides very high speech quality 

 
LanguageTWELP 700 bpsTWELP 600 bpsMELPe 600 bps
American 2.718 2.617 2.397
Arabic 2.594 2.47 2.254
British 2.671 2.559 2.414
Chinese 2.623 2.471 2.189
Danish 2.625 2.471 2.227
Dutch 2.484 2.374 2.173
Finnich 2.472 2.367 2.249
French 2.678 2.539 2.34
German 2.644 2.521 2.287
Greek 2.587 2.457 2.212
Hindi 2.646 2.549 2.403
Hungarian 2.644 2.520 2.359
Italian 2.824 2.705 2.428
Japanese 2.777 2.576 2.436
Norwegian 2.633 2.433 2.225
Polish 2.641 2.511 2.294
Portuguese 2.690 2.558 2.393
Russian 2.563 2.414 2.156
Spanish 2.623 2.525 2.389
Swedish 2.718 2.562 2.430
Average2.642652.509952.31275

Superiority of the TWELP 700 is on average 0.13 (!) and 0.33 (!!!) PESQ appropriately