The use of LSF-based phonetic classification in low-rate coder design

Author

Parry, J.J. ; Burnett, I.S. ; Chicharo, J.F.

Author_Institution

Whisper Labs., Wollongong Univ., NSW, Australia

fYear

1999

fDate

1999

Firstpage

49

Lastpage

51

Abstract

In this paper we investigate a novel approach to low-bit rate quantisation of the spectral parameters of speech. This approach incorporates phonetic information into the structure of line spectral frequency (LSF) codebooks. As clear relationships exist between phonetic segments and LSFs, phonetic events can be expressed in terms of the structure of an LSF codebook and the successive vectors chosen by it. The investigation leads to the conclusion that the structure of LSF codebooks can be usefully employed in phonetic classification as a front end to multi-modal phonetic vocoding

Keywords

signal classification; spectral analysis; speech coding; vector quantisation; vocoders; LSF codebooks; line spectral frequency codebooks; low-bit rate quantisation; low-rate coder design; multi-modal phonetic vocoding; multistage vector quantization; phonetic classification; phonetic events; spectral parameters; speech coding; Australia; Databases; Labeling; Laboratories; Natural languages; Speech coding; Switches; Testing; Vector quantization; Vocoders;

fLanguage

English

Publisher

ieee

Conference_Titel

Speech Coding Proceedings, 1999 IEEE Workshop on

Conference_Location

Porvoo

Print_ISBN

0-7803-5651-9

Type

conf

DOI

10.1109/SCFT.1999.781480

Filename

781480