General Information
    • ISSN: 1793-8201 (Print), 2972-4511 (Online)
    • Abbreviated Title: Int. J. Comput. Theory Eng.
    • Frequency: Quarterly
    • DOI: 10.7763/IJCTE
    • Editor-in-Chief: Prof. Mehmet Sahinoglu
    • Associate Editor-in-Chief: Assoc. Prof. Alberto Arteta, Assoc. Prof. Engin Maşazade
    • Managing Editor: Ms. Mia Hu
    • Abstracting/Indexing: Scopus (Since 2022), INSPEC (IET), CNKI,  Google Scholar, EBSCO, etc.
    • Average Days from Submission to Acceptance: 192 days
    • E-mail:
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Prof. Mehmet Sahinoglu
Computer Science Department, Troy University, USA
I'm happy to take on the position of editor in chief of IJCTE. We encourage authors to submit papers concerning any branch of computer theory and engineering.

IJCTE 2012 Vol.5(2): 292-297 ISSN: 1793-8201
DOI: 10.7763/IJCTE.2013.V5.696

Speech Enhancement Based on Frequency Domain ALE with Adaptive De-Correlation Parameters

Isao Nakanishi, Hironori Namba, and Shigang Li

Abstract—We have proposed the speech enhancement method using the frequency domain adaptive line enhancer, which enables to independently set de-correlation parameters at frequency bins. In the conventional method, we divided the frequency band into four domains and set a de-correlation parameter at each domain. However, the spectral distribution of voices varies depending on gender and/or age differences. In this paper, we propose to adaptively control the de-correlation parameter according to the signal-to-noise ratio at each domain. Moreover, we propose to adjust the frequency width of each domain to a detected pitch (fundamental frequency). Their effectiveness is evaluated in simulations.

Index Terms—Adaptive line enhancer, de-correlation parameter, frequency domain, speech enhancement.

The authors are with the Graduate School of Engineering, Tottori, 680-8552 Japan (e-mail:,,


Cite: Isao Nakanishi, Hironori Namba, and Shigang Li, "Speech Enhancement Based on Frequency Domain ALE with Adaptive De-Correlation Parameters," International Journal of Computer Theory and Engineering vol. 5, no. 2, pp. 292-297, 2013.

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