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Paper Abstract and Keywords
Presentation 2010-03-05 10:30
[Poster Presentation] A Study of Speech Noise Reduction System Based on Lattice Filter and Identification System
Takafumi Takemoto, Naoto Sasaoka, Yoshio Itoh (Tottori Univ.), Kensaku Fujii (Univ of Hyogo) SIS2009-62
Abstract (in Japanese) (See Japanese page) 
(in English) We have investigated a noise reconstruction system (NRS) with an adaptive line enhancer (ALE) as a noise reduction system. The NRS uses a linear prediction error filter (LPEF) and a noise reconstruction filter (NRF). The NRS assumes that the background noise is generated by exciting a linear system with a white signal. First, the white signal is estimated by the ALE and LPEF. Next, the background noise is reconstructed from the white signal by estimating the linear system in the NRF. In the conventional NRS, a transversal filter is used as the LPEF. However, the speech component included in a white signal remains by a transversal type LPEF. Therefore, the quality of enhanced speech is degraded. In order to solve the problem, a lattice filter is introduced to a LPEF. Since a lattice filter approximates the vocal tract model of speech, the residual speech is decreased and the quality of enhanced speech is improved.
Keyword (in Japanese) (See Japanese page) 
(in English) Noise Reduction / System Identification / Lattice Filter / / / / /  
Reference Info. IEICE Tech. Rep., vol. 109, no. 447, SIS2009-62, pp. 75-80, March 2010.
Paper # SIS2009-62 
Date of Issue 2010-02-25 (SIS) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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Conference Information
Committee SIS  
Conference Date 2010-03-04 - 2010-03-05 
Place (in Japanese) (See Japanese page) 
Place (in English) Kanagawa Institute of Technology 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To SIS 
Conference Code 2010-03-SIS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study of Speech Noise Reduction System Based on Lattice Filter and Identification System 
Sub Title (in English)  
Keyword(1) Noise Reduction  
Keyword(2) System Identification  
Keyword(3) Lattice Filter  
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1st Author's Name Takafumi Takemoto  
1st Author's Affiliation Tottori University (Tottori Univ.)
2nd Author's Name Naoto Sasaoka  
2nd Author's Affiliation Tottori University (Tottori Univ.)
3rd Author's Name Yoshio Itoh  
3rd Author's Affiliation Tottori University (Tottori Univ.)
4th Author's Name Kensaku Fujii  
4th Author's Affiliation University of Hyogo (Univ of Hyogo)
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Speaker
Date Time 2010-03-05 10:30:00 
Presentation Time 120 
Registration for SIS 
Paper # IEICE-SIS2009-62 
Volume (vol) IEICE-109 
Number (no) no.447 
Page pp.75-80 
#Pages IEICE-6 
Date of Issue IEICE-SIS-2010-02-25 


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