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Paper Abstract and Keywords
Presentation 2013-05-16 14:50
Data Adaptive Pre-filtering with Spectral Weighting -- Application to Single Channel Speech Enhancement --
Md. Khademul Islam Molla, Keikichi Hirose (Univ. of Tokyo) EA2013-8 SIP2013-8 SP2013-8
Abstract (in Japanese) (See Japanese page) 
(in English) The spectral weighting for speech enhancement works better when the level of speech energy is available in priori. Different treatment is applied for low and high energy segment of the noisy speech signals. In this paper, a data adaptive pre-filtering technique is introduced using noise assisted empirical mode decomposition (nEMD) to classify low and high energy speech segments. Fractional Gaussian noise is used as the reference signal to derive data adaptive threshold for this classification without requiring any training constraint. The higher energy components of speech signal are separated during pre-filtering. The spectral weighting is applied to suppress noise from the lower energy speech components. Then the signals separated by pre-filtering and obtained by spectral weighting are combined together yielding the resultant enhanced speech signal. The experimental results show that the proposed method is significantly effective for a wide range of noise levels (SNRs) with preserving the speech intelligibility.
Keyword (in Japanese) (See Japanese page) 
(in English) Data adaptive filtering / fractional Gaussian noise / spectral weighting / speech enhancement / / / /  
Reference Info. IEICE Tech. Rep., vol. 113, no. 29, SP2013-8, pp. 43-48, May 2013.
Paper # SP2013-8 
Date of Issue 2013-05-09 (EA, SIP, SP) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
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All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF EA2013-8 SIP2013-8 SP2013-8

Conference Information
Committee SP EA SIP  
Conference Date 2013-05-16 - 2013-05-17 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English) Speech and Acoustic Signal Processing, Speech, and Related Topics 
Paper Information
Registration To SP 
Conference Code 2013-05-SP-EA-SIP 
Language English (Japanese title is available) 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Data Adaptive Pre-filtering with Spectral Weighting 
Sub Title (in English) Application to Single Channel Speech Enhancement 
Keyword(1) Data adaptive filtering  
Keyword(2) fractional Gaussian noise  
Keyword(3) spectral weighting  
Keyword(4) speech enhancement  
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1st Author's Name Md. Khademul Islam Molla  
1st Author's Affiliation The University of Tokyo (Univ. of Tokyo)
2nd Author's Name Keikichi Hirose  
2nd Author's Affiliation The University of Tokyo (Univ. of Tokyo)
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Speaker Author-1 
Date Time 2013-05-16 14:50:00 
Presentation Time 25 minutes 
Registration for SP 
Paper # EA2013-8, SIP2013-8, SP2013-8 
Volume (vol) vol.113 
Number (no) no.27(EA), no.28(SIP), no.29(SP) 
Page pp.43-48 
#Pages
Date of Issue 2013-05-09 (EA, SIP, SP) 


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