Frequency domain multi-pulse coding at 2400 b/s

Author

van Schalkwyk, J.J.D. ; Van der Linde, J.G.

Author_Institution

Dept. of Electron. & Comput. Eng., Pretoria Univ., South Africa

fYear

1989

fDate

32682

Firstpage

137

Lastpage

142

Abstract

An alternative to linear predictive coding (LPC) that makes use of multipulse techniques in the frequency domain is described. The synthesized speech promises to have a much more natural sounding quality than that of ordinary LPC at 2400 b/s. By making use of pitch period repetition, it is possible to code each frame of a voiced excitation signal with only three pulses. Simulation results are presented, showing that the voiced portions of the speech had a more natural quality. It remains to extend the technique to include the unvoiced portions as well

Keywords

encoding; frequency-domain analysis; spectral analysis; speech analysis and processing; speech synthesis; 2400 bit/s; frequency domain multipulse coding; natural sounding quality; pitch period repetition; spectral analysis; speech synthesis; synthesized speech; voiced excitation signal; voiced portions; Acoustical engineering; Bandwidth; Bit rate; Discrete Fourier transforms; Frequency domain analysis; IEEE members; Performance evaluation; Signal synthesis; Speech synthesis; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications and Signal Processing, 1989. COMSIG 1989. Proceedings., Southern African Conference on

Conference_Location

Stellenbosch

Print_ISBN

0-87942-713-2

Type

conf

DOI

10.1109/COMSIG.1989.129032

Filename

129032