Adaptive filtering for broad band signal reconstruction using spectrum extrapolation

Author

Yasukawa, Hiroshi

Author_Institution

NTT Opt. Network Syst. Labs, Kanagawa, Japan

fYear

1996

Firstpage

169

Lastpage

172

Abstract

This paper describes the implementation of a speech quality enhancement system that achieves spectrum extrapolation of band limited signals. In telephone communication, spectrum based on aliasing processing is widely known. This paper proposes a new implementation using an adaptive method. This method introduces frequency domain adaptive digital filtering to broaden band limited signals into wide band signals. Implementation of the system and its performance are discussed

Keywords

adaptive filters; adaptive signal processing; digital filters; extrapolation; filtering theory; signal reconstruction; spectral analysis; speech enhancement; speech processing; telephony; adaptive filtering; adaptive method; aliasing processing; band limited signals; broadband signal reconstruction; frequency domain adaptive digital filtering; spectrum extrapolation; speech quality enhancement system; system performance; telephone communication; wideband signals; Adaptive filters; Band pass filters; Extrapolation; Finite impulse response filter; Frequency; Sampling methods; Signal reconstruction; Speech enhancement; Telephony; Wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Digital Signal Processing Workshop Proceedings, 1996., IEEE

Conference_Location

Loen

Print_ISBN

0-7803-3629-1

Type

conf

DOI

10.1109/DSPWS.1996.555487

Filename

555487