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Speech Noise Reduction System Based on Adaptive Filter with Variable Step Size Using Cross-Correlation

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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/39750

Title: Speech Noise Reduction System Based on Adaptive Filter with Variable Step Size Using Cross-Correlation
Authors: Shimada, Koji Browse this author
Sasaoka, Naoto Browse this author
Takemoto, Takafumi Browse this author
Itoh, Yoshio Browse this author
Fujii, Kensaku Browse this author
Issue Date: 4-Oct-2009
Publisher: Asia-Pacific Signal and Information Processing Association, 2009 Annual Summit and Conference, International Organizing Committee
Journal Title: Proceedings : APSIPA ASC 2009 : Asia-Pacific Signal and Information Processing Association, 2009 Annual Summit and Conference
Start Page: 477
End Page: 484
Abstract: In order to reduce background noise in noisy speech, we have investigated a noise reduction method based on a noise reconstruction system (NRS) with an adaptive line enhancer (ALE). The NRS uses a noise reconstruction filter (NRF) estimating the background noise. In case a fixed step size for updating tap coefficients of the NRF is used, it is difficult to estimate the background noise accurately while maintaining the high quality of enhanced speech. In order to improve the estimation accuracy of noise, a variable step size is introduced to the NRF. In a speech section, the variable step size decreases so as to become no sensitivity for speech, on the other hand, increases to track the background noise in a non-speech section. From simulation results, we have verified that the proposed system can reduce the actual noise while maintaining the high quality of enhanced speech.
Description: APSIPA ASC 2009: Asia-Pacific Signal and Information Processing Association, 2009 Annual Summit and Conference. 4-7 October 2009. Sapporo, Japan. Oral session: Intelligent Systems for Multimedia Signal Processing (6 October 2009).
Conference Name: APSIPA ASC 2009: Asia-Pacific Signal and Information Processing Association, 2009 Annual Summit and Conference
2009年アジア太平洋信号情報処理連合学会アニュアルサミット・国際会議
Conference Place: Sapporo
Type: proceedings
URI: http://hdl.handle.net/2115/39750
Appears in Collections:北海道大学サステナビリティ・ウィーク2009 (Sustainability Weeks 2009) > 2009年アジア太平洋信号情報処理連合学会アニュアルサミット・国際会議 (2009 APSIPA Annual Summit and Conference)

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