Title :
Final results of the development of a 2400 b/s LPC vocoder
Author :
Joubert, D.J. ; van Schalkwyk, J.J.D.
Author_Institution :
Dept. of Electron. & Comput. Eng., Pretoria Univ., South Africa
Abstract :
The final results obtained from a TMS 32010-based 2400 b/s linear-predictive coding (LPC) vocoder system are described. The design used as well as practical considerations and problems associated with the preprocessing and pitch prediction are discussed. The results of intelligibility tests, performed with phonetically balanced word lists, are also described. The good results obtained with the system are due mainly to the large dynamic range of the input stage, as well as the judicious choice of algorithms and the accurate implementation thereof
Keywords :
encoding; speech analysis and processing; vocoders; 2.4 kbit/s; LPC vocoder; TMS 32010; intelligibility tests; linear-predictive coding; phonetically balanced word lists; pitch prediction; preprocessing; Acoustic noise; Background noise; Bit rate; Dynamic range; Hardware; Linear predictive coding; Loudspeakers; Speech enhancement; Speech synthesis; Vocoders;
Conference_Titel :
Communications and Signal Processing, 1988. Proceedings., COMSIG 88. Southern African Conference on
Conference_Location :
Pretoria
Print_ISBN :
0-87942-709-4
DOI :
10.1109/COMSIG.1988.49297
