The multimodal multipulse excitation vocoder

Author

Unno, Takahim ; Barnwell, Thomas P., III ; Clements, Mark A.

Author_Institution

LSI Lab., Asahi Chem. Ind., Kanagawa, Japan

Volume

3

fYear

1997

fDate

21-24 Apr 1997

Firstpage

1683

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1997. ICASSP-97., 1997 IEEE International Conference on

Conference_Location

Munich

ISSN

1520-6149

Print_ISBN

0-8186-7919-0

Type

conf

DOI

10.1109/ICASSP.1997.598837

Filename

598837