Subband DCT and EMD Based Hybrid Soft Thresholding for Speech Enhancement
Joint Authors
Hirose, Keikichi
Minematsu, Nobuaki
Deger, Erhan
Molla, Md. Khademul Islam
Hasan, Md. Kamrul
Source
Advances in Acoustics and Vibration
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-05-20
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
This paper presents a two-stage soft thresholding algorithm based on discrete cosine transform (DCT) and empirical mode decomposition (EMD).
In the first stage, noisy speech is decomposed into eight frequency bands and a specific noise variance is calculated for each one.
Based on this variance, each band is denoised using soft thresholding in DCT domain.
The remaining noise is eliminated in the second stage through a time domain soft thresholding strategy adapted to the intrinsic mode functions (IMFs) derived by applying EMD on the signal obtained from the first stage processing.
Significantly better SNR improvement and perceptual speech quality results for different noise types prove the superiority of the proposed algorithm over recently reported techniques.
American Psychological Association (APA)
Deger, Erhan& Molla, Md. Khademul Islam& Hirose, Keikichi& Minematsu, Nobuaki& Hasan, Md. Kamrul. 2014. Subband DCT and EMD Based Hybrid Soft Thresholding for Speech Enhancement. Advances in Acoustics and Vibration،Vol. 2014, no. 2014, pp.1-11.
https://search.emarefa.net/detail/BIM-497073
Modern Language Association (MLA)
Deger, Erhan…[et al.]. Subband DCT and EMD Based Hybrid Soft Thresholding for Speech Enhancement. Advances in Acoustics and Vibration No. 2014 (2014), pp.1-11.
https://search.emarefa.net/detail/BIM-497073
American Medical Association (AMA)
Deger, Erhan& Molla, Md. Khademul Islam& Hirose, Keikichi& Minematsu, Nobuaki& Hasan, Md. Kamrul. Subband DCT and EMD Based Hybrid Soft Thresholding for Speech Enhancement. Advances in Acoustics and Vibration. 2014. Vol. 2014, no. 2014, pp.1-11.
https://search.emarefa.net/detail/BIM-497073
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-497073