Title :
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
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;
Conference_Titel :
Circuits and Systems, 2001. ISCAS 2001. The 2001 IEEE International Symposium on
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-6685-9
DOI :
10.1109/ISCAS.2001.921176
