[1] Guo Ruxue, Zhao Li, Liang Ruiyu, Zou Cairong, et al. Efficient design method of non-uniform cosine modulatedfilter bank for digital hearing aids [J]. Journal of Southeast University (English Edition), 2017, 33 (2): 140-144. [doi:10.3969/j.issn.1003-7985.2017.02.003]

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Efficient design method of non-uniform cosine modulatedfilter bank for digital hearing aids()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

33

Issue:

2017 2

Page:

140-144

Research Field:

Information and Communication Engineering

Publishing date:

2017-06-30

Info

Title:

Efficient design method of non-uniform cosine modulatedfilter bank for digital hearing aids

Author(s):

Guo Ruxue¹;  Zhao Li¹;  Liang Ruiyu¹;  2;  Zou Cairong¹;  3

¹School of Information Science and Engineering, Southeast University, Nanjing 210096, China
²School of Communication Engineering, Institute of Nanjing Technology, Nanjing 211167, China
³School of Mechanical and Electric Engineering, Guangzhou University, Guangzhou 510006 China

Keywords:

digital hearing aids;  cosine modulated filter bank(CMFB);  non-uniform filter bank;  speech quality

PACS:

TN912.3

DOI:

10.3969/j.issn.1003-7985.2017.02.003

Abstract:

To promote the performance of the traditional multi-channel filter bank which leads to speech quality degradation, an efficient design method of the non-uniform cosine modulated filter bank(CMFB)based on the audiogram for digital hearing aids is proposed. First, a low-pass prototype filter is designed by the linear iterative algorithm. Secondly, the uniform CMFB is achieved on the basis of the principle formulas. Then, the adjacent channels of a uniform filter bank which have low or gradual slopes are merged according to the trend of audiogram of the hearing impaired person. Finally, the corresponding non-uniform CMFB is obtained. Simulation results show that the signal processed by the proposed filter bank is similar to the original signal in a time-domain waveform and spectrogram without significant distortion or difference. The speech quality results show that the personal evaluation of speech quality(PESQ)of non-uniform CMFB is 35% higher than that of the traditional design, and the hearing-aid speech quality index(HASQI)increases by about 40%.

References:

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Memo

Memo:

Biographies: Guo Ruxue(1993—), female, graduate; Zhao Li(corresponding author), male, doctor, professor, zhaoli@seu.edu.cn.
Foundation items: The National Natural Science Foundation of China(No.61375028, 61673108), China Postdoctoral Science Foundation(No.2016M601696), Qing Lan Project, the Program for Special Talent in Six Fields of Jiangsu Province(No.2016-DZXX-023), Jiangsu Planned Projects for Postdoctoral Research Funds(No.1601011B).
Citation: Guo Ruxue, Zhao Li, Liang Ruiyu, et al. Efficient design method of non-uniform cosine modulated filter bank for digital hearing aids [J].Journal of Southeast University(English Edition), 2017, 33(2):140-144.DOI:10.3969/j.issn.1003-7985.2017.02.003.

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