An efficient framework for MPEG-4 HVXC encoder based on the multi-stage V/UV decision

Author

Huang, E-Chan ; Yang, Jar-Ferr

Author_Institution

Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan

Volume

2

fYear

2004

fDate

6-9 Dec. 2004

Firstpage

1113

Abstract

In this paper, we propose an efficient harmonic vector excitation coder (HVXC) speech encoder by using the framework of multi-stage voiced/unvoiced (V/UV) detection algorithm. With introducing the pre-stages V/UV decision, we embed the decision tree classifiers with coding procedure. Consequently, the first two stages of V/UV detection do not increase any extra computation to decide unvoiced speech in advance such that the modified HVXC encoder can adaptively adjust the flow of encoder functions to save the computation

Keywords

decision trees; signal detection; speech coding; vocoders; MPEG-4 HVXC speech encoder; decision tree classifiers; encoder functions; harmonic vector excitation coder; multistage unvoiced detection algorithm; multistage unvoiced detection decision; multistage voiced detection algorithm; multistage voiced detection decision; Computational complexity; Linear predictive coding; MPEG 4 Standard; Predictive models; Quantization; Signal analysis; Speech analysis; Speech coding; Vectors; Virtual manufacturing;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2004. Proceedings. The 2004 IEEE Asia-Pacific Conference on

Conference_Location

Tainan

Print_ISBN

0-7803-8660-4

Type

conf

DOI

10.1109/APCCAS.2004.1413079

Filename

1413079