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Hokkaido University Collection of Scholarly and Academic Papers >
Hokkaido University Sustainability Weeks >
Sustainability Weeks 2009 >
2009 APSIPA Annual Summit and Conference >
Speech Noise Reduction System Based on Adaptive Filter with Variable Step Size Using Cross-Correlation
| 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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