Title :
The multimodal multipulse excitation vocoder
Author :
Unno, Takahim ; Barnwell, Thomas P., III ; Clements, Mark A.
Author_Institution :
LSI Lab., Asahi Chem. Ind., Kanagawa, Japan
Abstract :
This paper presents a new high-quality, variable-rate vocoder in which the average bit-rate is parametrically controllable. The new vocoder is intended for use with data-voice simultaneous channel (DVSC) applications, in which the speech data is transmitted simultaneously with video and other types of data. The vocoder presented in this paper achieves state-of-the-art quality at several different bit-rates between 5.5 kbps and 10 kbps. Further, it achieves this performance at acceptable levels of complexity and delay
Keywords :
computational complexity; data communication; linear predictive coding; speech coding; variable rate codes; vector quantisation; vocoders; voice communication; 5.5 to 10 kbit/s; DVSC applications; LPC analysis; MSVQ; complexity; data-voice simultaneous channel applications; delay feedback function; high-quality variable-rate vocoder; multimodal multipulse excitation vocoder; multistage vector quantisation; parameter coding; speech coding; speech data; video data; Application software; Chemical industry; Chemical technology; Delay; Electric variables control; Laboratories; Large scale integration; Linear predictive coding; Speech analysis; Vocoders;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1997. ICASSP-97., 1997 IEEE International Conference on
Conference_Location :
Munich
Print_ISBN :
0-8186-7919-0
DOI :
10.1109/ICASSP.1997.598837
