A Computationally Efficient 11 Band Non-Uniform Filter Bank for Hearing Aids Targeting Moderately Sloping Sensorineural Hearing Loss

SAJAN P PHILIP, Sampath Palaniswami, Harikirubha Sivakumar


A computationally efficient 11 band non-uniform filter bank addressing low or moderately sloping sensorineural hearing loss - the most common type of hearing problem- is proposed. This structure is suitable for low cost, small area implementations of hearing aids. The computational efficiency is achieved by adopting the Frequency Response Masking technique, which uses only two prototype filters with a total of 19 multipliers at 80dB stopband attenuation for the design of entire non-uniform filter bank. The computational complexity analysis shows that the proposed method provides about a 70-90% reduction in computational resources compared to non-FRM methods and about a 40-80% reduction in computational resources compared to the other FRM methods. The audiogram matching performance analysis shows that the matching error of the proposed filter bank is negligible even without optimization. The delay performance of the filter bank is acceptable for both Closed Canal Fittings and Open Canal Fittings.


filter bank; frequency response masking; interpolated FIR filter; hearing aid

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R. Crochiere and L.Rabiner, Multirate digital signal processing. Englewood Cliffs: Prentice-Hall, 1983.

P. Vaidyanathan, Multirate systems and filter banks. Englewood Cliffs: Prentice Hall, 1993.

Y. Neuvo, Dong Cheng-Yu and S. Mitra, "Interpolated finite impulse response filters," in IEEE Transactions on Acoustics, Speech, and Signal Processing, vol. 32, no. 3, pp. 563-570, June 1984. DOI: 10.1109/TASSP.1984.1164348

Yong Lim, "Frequency-response masking approach for the synthesis of sharp linear phase digital filters," in IEEE Transactions on Circuits and Systems, vol. 33, no. 4, pp. 357-364, April 1986. DOI: 10.1109/TCS.1986.1085930

Y. Lim, "A digital filter bank for digital audio systems," in IEEE Transactions on Circuits and Systems, vol. 33, no. 8, pp. 848-849, August 1986. DOI: 10.1109/TCS.1986.1085988

T. Lunner and J. Hellgren, "A digital filterbank hearing aid-design, implementation and evaluation," [Proceedings] ICASSP 91: 1991 International Conference on Acoustics, Speech, and Signal Processing, Toronto, Ontario, Canada, 1991, pp. 3661-3664 vol.5 .DOI: 10.1109/ICASSP.1991.151068

Ying Wei and Yong Lian, "A computationally efficient non-uniform digital FIR filter bank for hearing aid," IEEE International Workshop on Biomedical Circuits and Systems, 2004., Singapore, 2004, pp. S1/3/INV-S1/17. DOI: 10.1109/BIOCAS.2004.1454116

Yong Lian and Ying Wei, "A computationally efficient nonuniform FIR digital filter bank for hearing aids," in IEEE Transactions on Circuits and Systems I: Regular Papers, vol. 52, no. 12, pp. 2754-2762, Dec. 2005. DOI: 10.1109/TCSI.2005.857871

Y. Wei and Y. Lian, "A 16-band nonuniform FIR digital filter bank for hearing aid," 2006 IEEE Biomedical Circuits and Systems Conference, London, 2006, pp. 186-189. DOI: 10.1109/BIOCAS.2006.4600339

A. Sebastian, M. N. Ragesh and T. G. James, "A low complex 10-band non-uniform FIR digital filter bank using frequency response masking technique for hearing aid," 2014 First International Conference on Computational Systems and Communications (ICCSC), Trivandrum, 2014, pp. 167-172. DOI: 10.1109/COMPSC.2014.7032641

T. Devis and M. Manuel, "A 17-Band Non-Uniform Interpolated FIR Filter Bank for Digital Hearing Aid," 2018 International Conference on Communication and Signal Processing (ICCSP), Chennai, 2018, pp. 0452-0456.DOI: 10.1109/ICCSP.2018.8524446

Y. Wei, T. Ma, B. K. Ho and Y. Lian, "The Design of Low-Power 16-Band Nonuniform Filter Bank for Hearing Aids," in IEEE Transactions on Biomedical Circuits and Systems, vol. 13, no. 1, pp. 112-123, Feb. 2019. DOI: 10.1109/TBCAS.2018.2888860

Y. Wei and D. Liu, "A design of digital FIR filter banks with adjustable subband distribution for hearing aids," 2011 8th International Conference on Information, Communications & Signal Processing, Singapore, 2011, pp. 1-5.

Y. Wei and D. Liu, "A Reconfigurable Digital Filterbank for Hearing-Aid Systems With a Variety of Sound Wave Decomposition Plans," in IEEE Transactions on Biomedical Engineering, vol. 60, no. 6, pp. 1628-1635, June 2013. DOI: 10.1109/ICICS.2011.6173544

Y. Wei and Y. Wang, "Design of Low Complexity Adjustable Filter Bank for Personalized Hearing Aid Solutions," in IEEE/ACM Transactions on Audio, Speech, and Language Processing, vol. 23, no. 5, pp. 923-931, May 2015. DOI: 10.1109/TASLP.2015.2409774

Y. Kuo, T. Lin, Y. Li and C. Liu, "Design and Implementation of Low-Power ANSI S1.11 Filter Bank for Digital Hearing Aids," in IEEE Transactions on Circuits and Systems I: Regular Papers, vol. 57, no. 7, pp. 1684-1696, July 2010. DOI: 10.1109/TCSI.2009.2033539

C. Liu, K. Chang, M. Chuang and C. Lin, "10-ms 18-Band Quasi-ANSI S1.11 1/3-Octave Filter Bank for Digital Hearing Aids," in IEEE Transactions on Circuits and Systems I: Regular Papers, vol. 60, no. 3, pp. 638-649, March 2013. DOI: 10.1109/TCSI.2012.2209731

S. Lai, C. Liu, L. Wang, S. Chen and K. Chen, "11.25-ms-Group-Delay and Low-Complexity Algorithm Design of 18-Band Quasi-ANSI S1.11 1/3 Octave Digital Filterbank for Hearing Aids," in IEEE Transactions on Circuits and Systems I: Regular Papers, vol. 62, no. 6, pp. 1572-1581, June 2015. DOI: 10.1109/TCSI.2015.2411795

C. Yang, C. Liu and S. Jou, "A Systematic ANSI S1.11 Filter Bank Specification Relaxation and Its Efficient Multirate Architecture for Hearing-Aid Systems," in IEEE/ACM Transactions on Audio, Speech, and Language Processing, vol. 24, no. 8, pp. 1380-1392, Aug. 2016. DOI: 10.1109/TASLP.2016.2556422

Shaeen Kalathil, Elizabeth Elias, Efficient design of non-uniform cosine modulated filter banks for digital hearing aids, AEU - International Journal of Electronics and Communications,Volume 69, Issue 9, 2015, Pages 1314-1320. DOI: 10.1016/j.aeue.2015.05.015

Nisha Haridas, Elizabeth Elias, Efficient variable bandwidth filters for digital hearing aid using Farrow structure, Journal of Advanced Research, Volume 7, Issue 2, 2016, Pages 255-262. DOI:10.1016/j.jare.2015.06.002

Nisha Haridas, Elizabeth Elias, Design of reconfigurable low-complexity digital hearing aid using Farrow structure based variable bandwidth filters, Journal of Applied Research and Technology, Volume 14, Issue 2,2016, Pages 154-165. DOI:10.1016/j.jart.2016.03.005

Stone, Michael A., et al. “Tolerable Hearing Aid Delays. V. Estimation of Limits for Open Canal Fittings.” Ear and Hearing, vol. 29, no. 4, 2008, pp. 601–617. DOI:10.1097/AUD.0b013e3181734ef2

Stone M.A. & Moore B.C.J. 2002. Tolerable hearing aid delays. II. Estimation of limits imposed during speech production. Ear Hear , 23, 325 – 338. Stone M.A. & Moore B.C.J. 2003.DOI: 10.1097/00003446-200208000-00008

Tolerable hearing aid delays. III. Effects on speech production and perception of across-frequency variation in delay. Ear Hear , 24, 175 – 183. Stone M.A. & Moore B.C.J. 2005.

Tolerable hearing-aid delays IV. Effects on subjective disturbance during speech production by hearing-impaired subjects. Ear Hear , 26, 225 – 235. DOI: 10.1097/01.AUD.0000058106.68049.9C

Joshua Alexander, “Hearing Aid Delay and Current Drain in Modern Digital Devices”, Canadian Audiologist, Vol. 6 , Issue 6, 2019. http://canadianaudiologist.ca/hearing-aid-delay-feature/

Høydal EH. (2017) A new own voice processing system for optimizing communication. Hearing Review. 24(11):20-22. https://www.hearingreview.com/practicebuilding/marketing/new-voice-processing-system-optimizing-communication

Goehring, Tobias, et al. “Tolerable Delay for Speech Production and Perception: Effects of Hearing Ability and Experience with Hearing Aids.” International Journal of Audiology, vol. 57, no. 1, 2017, pp. 61–68.DOI: 10.1080/14992027.2017.1367848

McGrath M and Summerfield Q. Intermodal timing relations and audiovisual speech recognition by normal-hearing adults. J Acoust Soc Amer 1985;77:678–85. DOI: 10.1121/1.392336

Froehlich, M., Giese, U., Powers, T. (2019). Why open hearing aid fittings are often not the best choice for the patient. AudiologyOnline, Article 24982. Retrieved from https://www.audiologyonline.com

Wong, Lena L N et al. “Hearing aid satisfaction: what does research from the past 20 years say?.” Trends in amplification vol. 7,4 (2003): 117-61. DOI:10.1177/108471380300700402

Cox, Robyn M et al. “Impact of Hearing Aid Technology on Outcomes in Daily Life I: The Patients' Perspective.” Ear and hearing vol. 37,4 (2016): DOI:10.1097/AUD.0000000000000277

Chien W, Lin F. Prevalence of hearing aid use among older adults in the United States. Arch Intern Med. 2012;172(3):292–293 DOI:10.1001/archinternmed.2011.1408

Aahz, H., & Moore, B.C.J. (2007). The value of routine real ear measurement of the gain of digital hearing aids. Journal of the American Academy of Audiology, 18, 653-664. DOI: 10.3766/jaaa.18.8.3

Woods, W.S., Van Tasell, D.J., Rickert, M.E., & Trine, T.D. (2006). SII and fit-to-target analysis of compression system performance as a function of number of compression channels. International Journal of Audiology, 45, 630-644. DOI: 10.1080/14992020600937188

Kates, J.M. (2010). Understanding compression: Modeling the effects of dynamic-range compression in hearing aids. International Journal of Audiology, 49, 395-409. DOI: 10.3109/14992020903426256

Dakshina G. De Silva, Nidhi Thakur & Mengzhi Xie (2013) A hedonic price analysis of hearing aid technology, Applied Economics, 45:16, 2315-2323,DOI: 10.1080/00036846.2012.663473

Penteado, Silvio Pires, and Ricardo Ferreira Bento. “Performance analysis of ten brands of batteries for hearing aids.” International archives of otorhinolaryngology vol. 17,3 (2013): 291-304. DOI: 10.7162/S1809-977720130003000010

K. -. Chong, B. -. Gwee and J. S. Chang, "A 16-Channel Low-Power Nonuniform Spaced Filterbank Core for Digital Hearing Aids," in IEEE Transactions on Circuits and Systems II: Express Briefs, vol. 53, no. 9, pp. 853-857, Sept. 2006. DOI: 10.1109/TCSII.2006.881821

L. S. Nielsen and J. Sparso, "Designing asynchronous circuits for low power: an IFIR filter bank for a digital hearing aid," in Proceedings of the IEEE, vol. 87, no. 2, pp. 268-281, Feb. 1999. DOI: 10.1109/5.740020

Mccreery, Ryan W., et al. “Characteristics of Hearing Aid Fittings in Infants and Young Children.” Ear and Hearing, vol. 34, no. 6, 2013, pp. 701–710., DOI: 10.1097/AUD.0b013e31828f1033


DOI: https://doi.org/10.33180/InfMIDEM2020.301


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