Waveform interpolation and analysis-by-synthesis-a good match?

Author

Burnett, Ian S. ; Ni, J.

Author_Institution

Dept. of Electr. & Comput. Eng., Wollongong Univ., NSW, Australia

fYear

1997

fDate

7-10 Sep 1997

Firstpage

29

Lastpage

30

Abstract

This paper considers the incorporation of analysis-by-synthesis (A-by-S) techniques in waveform interpolation (WI) coding architectures. It proposes an altered A-by-S mechanism which overcomes the non-synchronous input/output speech which is characteristic of WI coders. The proposed architectures operate on a prototype-by-prototype basis, optimising parameter choices within each frame. Three possible architectures are considered, with varying degrees of A-by-S integration. These low-rate, 2.4 kb/s coders are tailored to the transmission of no prototype phase information. It is also shown that the incorporation of A-by-S in WI allows exploitation of CELP style perceptual weighting techniques. The conclusion is that the use of A-by-S can improve the perceptual performance of WI coders

Keywords

interpolation; speech coding; speech intelligibility; speech processing; speech synthesis; waveform analysis; 2.4 kbit/s; analysis-by-synthesis; coding architectures; low-rate coders; nonsynchronous input/output speech; perceptual performance; perceptual weighting techniques; waveform interpolation; Computer architecture; Decoding; Frequency; Interpolation; Laboratories; Prototypes; Quantization; Speech analysis; Speech enhancement; Speech synthesis;

fLanguage

English

Publisher

ieee

Conference_Titel

Speech Coding For Telecommunications Proceeding, 1997, 1997 IEEE Workshop on

Conference_Location

Pocono Manor, PA

Print_ISBN

0-7803-4073-6

Type

conf

DOI

10.1109/SCFT.1997.623880

Filename

623880