Noise reduction system based on frequency domain adaptive filter using modified DFT pair

Author

NAKANISHI, Isao ; Itoh, Yoshio ; Fukui, Yasuhito

Author_Institution

Fac. of Educ. & Regional Sci., Tottori Univ., Japan

Volume

2

fYear

2001

fDate

6-9 May 2001

Firstpage

737

Abstract

This paper presents the noise reduction system based on the Frequency Domain Adaptive Filter (FDAF) using the Modified DFT pair (MDFTP). The proposed system consists of the Adaptive Line Enhancer (ALE), which utilizes single microphone; therefore, it is suitable for miniaturizing the portable electronic equipment. In addition, the proposed system requires the adjustment of the decorrelation parameter in the ALE according to the pitch in speech signal, therefore, a pitch detector based on using the MDFT is proposed. The performance of the proposed noise reduction system including the pitch detector is confirmed through computer simulation

Keywords

adaptive filters; adaptive signal processing; decorrelation; discrete Fourier transforms; signal detection; speech processing; adaptive line enhancer; decorrelation parameter; frequency domain adaptive filter; microphone; modified DFT pair; pitch detector; portable electronic equipment; speech signal noise reduction system; speech signal pitch; Adaptive filters; Computer simulation; Decorrelation; Detectors; Electronic equipment; Frequency domain analysis; Line enhancers; Microphones; Noise reduction; Speech;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2001. ISCAS 2001. The 2001 IEEE International Symposium on

Conference_Location

Sydney, NSW

Print_ISBN

0-7803-6685-9

Type

conf

DOI

10.1109/ISCAS.2001.921176

Filename

921176