Tone-Tunable Environment-Adaptive Digital Hearing Aids Using Variable Magnitude Filters

• Project/Area Number: 18560388
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Communication/Network engineering
• Research Institution: Toho University
• Principal Investigator: ITO Noboru Toho University, 理学部, 教授 (00237041)
• Project Period (FY): 2006 – 2008
• Project Status: Completed (Fiscal Year 2008)
• Budget Amount: ¥4,160,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥660,000); Fiscal Year 2008: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2007: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2006: ¥1,300,000 (Direct Cost: ¥1,300,000)
• Keywords: 補聴器 / 可変フィルタ / フィルタバンク / 可変フィルタバンク / オージオグラム / フィルタ / 補聴 / アナログフィルタ / アナログ周波数変換 / ディジタルフィルタ / 低域通過ディジタルフィルタ / 帯域通過ディジタルフィルタ / 高域通過ディジタルフィル / ディジタル補聴器 / 可変非整数遅延フィルタ / 可変振幅フィルタ / FIRフィルタ / 周波数変換法 / 高速実現

Research Abstract

補聴器はアナログからディジタルへ主流になりつつある。ディジタル補聴器は、アナログ素子のものと比べると、入力されてきた音声信号に多様な処理を施すことが容易に実現できるため、「fitting」の際に要求される細かい調節が可能である。しかし、補聴器を必要とする難聴者の聴力特性は千差万別であり、おのおのの聴力に適したfittingが行える従来のディジタル補聴器は、計算量・電力消費が多くて、コストが高いなどの問題点が挙げられる。本研究では、低次数でも比較的特性の優れた3種類の可変IIRディジタルフィルタ(可変低域通過ディジタルフィルタ、可変帯域通過ディジタル、可変高域通過ディジタルフィルタで構成される3チャンネル可変ディジタルフィルタバンク(variable filter-bank : VFB)を設計し、消費電力とコストパフォーマンスの悪さの要因になっている計算量を軽減し、かつ最適なfittingが可能なディジタル補聴器の設計法を開発した。

Research Products

• [Journal Article] Generalized Pascal matrices, inverses, computations and properties using one-to-one rational polynomial s-z transformations (2008)
  • Author(s): T.-B. Deng, S. Chivapreecha, and K. Dejhan
  • Journal Title: IEEE Trans. Circuits Syst. I : Regular Papers vol.55, no.9 Pages: 2650-2663
• [Journal Article] Generalized Pascal matrices, inverses, computations and properties using one-to-one rational polynomial s-z transformations (2008)
  • Author(s): T. -B. Deng, S. Chivapreecha, K. Dejhan
  • Journal Title: IEEE Trans. CAS-I 55 Pages: 2650-2663
  • Peer Reviewed
• [Journal Article] Symmetric structures for odd-order maximally flat and weighted-least-squares variable fractional-delay filters (2007)
  • Author(s): T.-B. Deng
  • Journal Title: IEEE Trans. Circuits Syst. I : Regular Papers vol.54, no.12 Pages: 2718-2732
• [Journal Article] Coefficient-symmetries for implementing arbitrary-order Lagrange-type variable fractional-delay digital filters (2007)
  • Author(s): T.-B. Deng
  • Journal Title: IEEE Trans. Signal Process vol.55, no.8 Pages: 4078-4090
• [Journal Article] Coefficient-symmetries for implementing arbitrary-order Lagrange-type variable fractional-delay digital filters (2007)
  • Author(s): Tian-Bo Deng
  • Journal Title: IEEE Trans. Signal Processing 55 Pages: 4078-4090
  • Peer Reviewed
• [Journal Article] Symmetric structures for odd-order maximally flat and weighted-least-squares variable fractional-delay filters (2007)
  • Author(s): Tian-Bo Deng
  • Journal Title: IEEE Trans. Circuits Syst. -I 54 Pages: 2718-2732
  • Peer Reviewed
• [Journal Article] Coefficient-symmetries for implementing arbitrary-order Lagrange-type variable fractional-delay digital filters (2007)
  • Author(s): T.-B.Deng
  • Journal Title: IEEE Trans. Signal Processing (未定)
• [Journal Article] Weighted-least-squares design of variable fractional-delay FIR filters using coefficient symmetry (2006)
  • Author(s): T.-B. Deng and Y. Lian
  • Journal Title: IEEE Trans. Signal Processing vol.54, no.8 Pages: 3023-3038
• [Journal Article] Weighted-least-squares design of variable fractional-delay FIR filters using coefficient symmetry (2006)
  • Author(s): T.-B Deng, Y.Lian
  • Journal Title: IEEE Trans. Signal Processing 54 Pages: 3023-3038
• [Journal Article] Coefficient-symmetries for implementing odd-order Lagrange-type variable fractional-delay filters (2006)
  • Author(s): T.-B.Deng
  • Journal Title: Proc. IEEE ICASSP 2006 III Pages: 564-567
• [Journal Article] An explicit formula for arbitrary-order Lagrange-type variable fractional-delay filters (2006)
  • Author(s): T.-B.Deng
  • Journal Title: Proc. ITC-CSCC 2006 II Pages: 537-540
• [Journal Article] High-speed and low-cost structures for implementing odd-order Lagrange-type variable fractional-delay filters (2006)
  • Author(s): T.-B.Deng
  • Journal Title: Proc. IEEE ISCIT 2006 I
• [Journal Article] Symmetry development for implementing odd-order Lagrange-type variable fractional-delay filters (2006)
  • Author(s): T.-B.Deng
  • Journal Title: Proc. IEEE APCCAS 2006 I Pages: 57-60
• [Presentation] Three-channel variable filter-bank for digital hearing aids (2009)
  • Author(s): Tian-Bo Deng
  • Organizer: IEEE ISPACS'08
  • Place of Presentation: Bangkok, Thailand
  • Year and Date: 2009-02-10
• [Presentation] Three-channel variable filter-bank for digital hearing aids (2009)
  • Author(s): T.-B. Deng
  • Organizer: Proc. 2008 IEEE International Symposium on Intelligent Signal Processing and Communication Systems(ISPACS 2008)
  • Place of Presentation: Bangkok, Thailand
• [Presentation] Generalized structure for designing odd-order variable fractional-delay filters (2008)
  • Author(s): Tian-Bo Deng
  • Organizer: IEEE ISCAS'08
  • Place of Presentation: Seattle, USA
  • Year and Date: 2008-05-21
• [Presentation] Generalized Pascal matrices and inverses using one-to-one rational polynomial s-z transformations (2008)
  • Author(s): Tian-Bo Deng
  • Organizer: IEICE Technical Report
  • Place of Presentation: Yamaguchi, Japan
  • Year and Date: 2008-03-07
• [Presentation] Low-complexity structure for designing odd-order variable fractional-delay filters (2008)
  • Author(s): Tian-Bo Deng
  • Organizer: ICESIT'08
  • Place of Presentation: Bangkok, Thailand
  • Year and Date: 2008-02-28
• [Presentation] Low-complexity three-channel variable filter-bank using coefficient- symmetries (2008)
  • Author(s): T.-B. Deng
  • Organizer: Proc. 2008 IEEE International Symposium on Communications and Information Technologies(ISCIT 2008)
  • Place of Presentation: Vientiane, Laos
• [Presentation] Recurrent formula and property of generalized Pascal matrix (2008)
  • Author(s): T.-B. Deng, S. Chivapreecha, and K. Dejhan
  • Organizer: Proc. 2008 International Technical Conference on Circuits/Systems, Computers and Communications(ITC-CSCC 2008)
  • Place of Presentation: Shimonoseki, Japan
• [Presentation] Generalized Pascal matrices and inverses using one-to-one rational polynomial s-z transformations (2008)
  • Author(s): T.-B. Deng, S. Chivapreecha, and K. Dejhan
  • Organizer: Proc. 2008 International Technical Conference on Circuits/Systems, Computers and Communications(ITC-CSCC 2008)
  • Place of Presentation: Shimonoseki, Japan
• [Presentation] Generalized structure for designing odd-order variable fractional-delay filters (2008)
  • Author(s): T.-B. Deng
  • Organizer: Proc. 2008 IEEE International Symposium on Circuits and Systems(ISCAS 2008)
  • Place of Presentation: Seattle, USA
• [Presentation] Low-complexity structure for designing odd-order variable fractional-delay filters (2008)
  • Author(s): T.-B. Deng
  • Organizer: Proc. 2008 International Conference on Embedded Systems and Intelligent Technology(ICESIT 2008)
  • Place of Presentation: Bangkok, Thailand
• [Presentation] Transformation matrix for odd-order Lagrange-type variable fractional-delay filters (2007)
  • Author(s): Tian-Bo Deng
  • Organizer: IEEE ICICS'07
  • Place of Presentation: Singapore
  • Year and Date: 2007-12-10
• [Presentation] Arbitrary-order non-causal Lagrange-type variable fractional-delay digital filters (2007)
  • Author(s): Tian-Bo Deng
  • Organizer: IEEE ICICS'07
  • Place of Presentation: Singapore
  • Year and Date: 2007-12-10
• [Presentation] Weighted-least-squares design of odd-order variable fractional-delay filters using coefficient-symmetry (2007)
  • Author(s): Tian-Bo Deng
  • Organizer: IEEE ICICS'07
  • Place of Presentation: Singapore
  • Year and Date: 2007-12-10
• [Presentation] Symmetric structures for even-order Lagrange-type variable fractional-delay filters (2007)
  • Author(s): Tian-Bo Deng
  • Organizer: IEEE ICIAS'07
  • Place of Presentation: Kuala Lumpur, Malaysia
  • Year and Date: 2007-11-25
• [Presentation] Efficient implementation of odd-order Lagrange-type variable fractional-delay digital filters (2007)
  • Author(s): Tian-Bo Deng
  • Organizer: IEEE APCC'07
  • Place of Presentation: Bangkok, Thailand
  • Year and Date: 2007-10-18
• [Presentation] Arbitrary-order non-causal Lagrange-type variable fractional-delay digital filters (2007)
  • Author(s): Tian-Bo Deng
  • Organizer: IEICE Technical Report
  • Place of Presentation: Kochi, Japan
  • Year and Date: 2007-08-07
• [Presentation] WLS design of odd-order variable fractional-delay filters using coefficient-symmetry (2007)
  • Author(s): Tian-Bo Deng
  • Organizer: IEICE Technical Report
  • Place of Presentation: Kochi, Japan
  • Year and Date: 2007-08-07
• [Presentation] Generalized structure for designing odd-order variable fractional-delay filters (2007)
  • Author(s): Tian-Bo Deng
  • Organizer: IEICE Technical Report
  • Place of Presentation: Kochi, Japan
  • Year and Date: 2007-08-07
• [Presentation] Structure transformation for odd-order Lagrange-type variable fractional-delay filters (2007)
  • Author(s): Tian-Bo Deng
  • Organizer: ITC-CSCC'07
  • Place of Presentation: Busan, Korea
  • Year and Date: 2007-07-08
• [Presentation] High-speed and low-cost structures for implementing odd-order Lagrange-type variable fractional-delay filters (2007)
  • Author(s): Tian-Bo Deng
  • Organizer: IEEE ISCAS'07
  • Place of Presentation: New Orleans, USA
  • Year and Date: 2007-05-28
• [Presentation] Weighted-least-squares design of odd-order variable fractional-delay filters using coefficient-symmetry (2007)
  • Author(s): T.-B. Deng
  • Organizer: Proc. 2007 IEEE International Conference on Information, Communications and Signal Processing(ICICS 2007)
  • Place of Presentation: Singapore
• [Presentation] Arbitrary-order noncausal Lagrangetype variable fractional-delay digital filters (2007)
  • Author(s): T.-B. Deng
  • Organizer: Proc. 2007 IEEE International Conference on Information, Communications and Signal Processing(ICICS 2007), P0217
  • Place of Presentation: Singapore
• [Presentation] Transformation matrix for odd-order Lagrange-type variable fractional-delay filters (2007)
  • Author(s): T.-B. Deng
  • Organizer: Proc. 2007 IEEE International Conference on Information, Communications and Signal Processing(ICICS 2007), P0214
  • Place of Presentation: Singapore
• [Presentation] Symmetric structures for even-order Lagrange-type variable fractional-delay filters (2007)
  • Author(s): T.-B. Deng
  • Organizer: Proc. 2007 IEEE International Conference on Intelligent & Advanced Systems(ICIAS 2007), SignalP2 : 194-197
  • Place of Presentation: Kuala Lumpur, Malaysia
• [Presentation] Efficient implementation of odd-order Lagrange-type variable fractional-delay digital filters (2007)
  • Author(s): T.-B. Deng
  • Organizer: Proc. 2007 IEEE Asia-Pacific Conference on Communications(APCC 2007) pp.441-444
  • Place of Presentation: Bangkok, Thailand
• [Presentation] Structure transformation for odd-order Lagrange-type variable fractional-delay filters (2007)
  • Author(s): T.-B. Deng
  • Organizer: Proc. 2007 International Technical Conference on Circuits/Systems, Computers and Communications(ITC-CSCC 2007), vol.3, pp.1035-1036
  • Place of Presentation: Busan, Korea
• [Presentation] High-speed and low-cost structures for implementing odd-order Lagrange-type variable fractional-delay filters (2007)
  • Author(s): T.-B. Deng
  • Organizer: Proc. 2007 IEEE International Symposium on Circuits and Systems(ISCAS 2007), pp.3435-3438
  • Place of Presentation: New Orleans, USA
• [Presentation] Symmetry development for implementing odd-order Lagrange-type variable fractional-delay filters (2006)
  • Author(s): T.-B. Deng
  • Organizer: Proc. 2006 IEEE Asia Pacific Conference on Circuits and Systems(APCCAS 2006), pp.57-60
  • Place of Presentation: Singapore
• [Presentation] Weighted least-squares design of wide-band interpolation kernel (2006)
  • Author(s): T.-B. Deng
  • Organizer: Proc. 2006 IEEE International Symposium on Communications and Information Technologies(ISCIT 2006), pp.W4A-6
  • Place of Presentation: Bangkok, Thailand
• [Presentation] High-speed and low-cost structures for implementing odd-order Lagrange-type variable fractional-delay filters (2006)
  • Author(s): T.-B. Deng
  • Organizer: Proc. 2006 IEEE International Symposium on Communications and Information Technologies(ISCIT 2006), pp.W4A-5
  • Place of Presentation: Bangkok, Thailand
• [Presentation] High-resolution image interpolation using Lagrange-type variable fractional-delay filter (2006)
  • Author(s): T.-B. Deng
  • Organizer: Proc. 2006 International Technical Conference on Circuits/Systems, Computers and Communications(ITC-CSCC 2006), vol.II, pp.541-544
  • Place of Presentation: Chiang Mai, Thailand
• [Presentation] An explicit formula for arbitrary-order Lagrange-type variable fractional-delay filters (2006)
  • Author(s): T.-B. Deng
  • Organizer: Proc. 2006 International Technical Conference on Circuits/Systems, Computers and Communications(ITC-CSCC 2006), vol.II, pp.537-540
• [Presentation] Coefficient symmetry for implementing odd-order Lagrange-type variable fractional-delay filters (2006)
  • Author(s): T.-B. Deng
  • Organizer: Proc. 2006 IEEE International Conference on Acoustics, Speech, and Signal Processing(ICASSP), vol.III, pp.564-567
  • Place of Presentation: Toulouse, France
• [Remarks] IEEE ISCIT'06の最優秀論文賞受賞
  • URL: http://www.lab.toho-u.ac.jp/sci/is/deng
• [Remarks]
  • URL: http://www.lab.toho-u.ac.jp/sci/is/deng
• [Remarks]
  • URL: http://www.lab.toho-u.ac.jp/sci/is/deng/