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An Adaptive Feedback Canceller for Fully Implantable Hearing Device Using Tympanic Membrane Installed Microphone
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 Title & Authors
An Adaptive Feedback Canceller for Fully Implantable Hearing Device Using Tympanic Membrane Installed Microphone
Kim, Tae Yun; Kim, Myoung Nam; Cho, Jin-Ho;
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Many implantable hearing aids are being developed as alternatives to conventional hearing aids which has inconveniences for use and social stigma that make hearing-impaired people avoid to wear it. Particularly, the fully-implantable middle ear hearing devices (F-IMEHD) are being actively studied for mixed or sensorineural hearing impaired people. In development of F-IMEHD, the most difficult problem is improving the performance of implantable microphone. Recently, Cho et al. have studied the tympanic membrane installed microphone which has better sensitivity and is easier to operate on patient than the microphone implanted under the skin. But, it may cause howling problem due to the feedback signal via oval window and ossicle chain from the transducer on round window in the middle ear cavity, therefore, a feedback canceller is necessary. In this paper, we designed NLMS (normalized least mean square) adaptive feedback canceller for F-IMEHD with tympanic membrane installed microphone and a transducer implemented at round window, and computer simulation was performed to verify its operation. The designed adaptive feedback canceller has a delay filter, a 64 point FIR fixed filter and a 8-tap adaptive FIR filter. Computer simulation of the feedback path is modeled by using the data obtained through human cadaver experiment.
F-IMEHD;Implantable Microphone;Adaptive Feedback Canceller;
 Cited by
S.W. Chae, “A Review of Age-related Hearing Loss,” Journal of Korean Medical Association, Vol. 54, No. 9, pp. 908-909, 2011. crossref(new window)

M.J. Jeon, E.J. Choi, and J. Sakong, “Incidence Rate of Noise Induced Hearing Loss in Korean Youths Using National Health Insurance Data,” The Journal of Korean Society for School Health Education, Vol. 14, No. 2, pp. 93-112, 2013.

D.H. Kim, Y.J. Lee, P.U. Kim, S.H. Lee, J.H. Cho and M.N. Kim, “Finite Element Analysis of Small Acoustic Filters for Hearing Protection Device,” Journal of Korea Multimedia Society, Vol. 10, No. 2, pp. 200-208, 2006.

J.M. Kates, Digital Hearing Aids, Plural Publishing Inc., San Diego, USA, 2008.

D.D. Backous and W. Duke, “Implantable Middle Ear Hearing Devices: Current State of Technology and Market Challenges,” Current Opinion Otolaryngology-Head and Neck Surgery, Vol. 14, No. 5, pp. 314-318, 2006. crossref(new window)

D.S. Haynes, J.A. Young, G.B. Wanna, and M.E. Glasscock Ⅲ, “Middle Ear Implantable Hearing Devices: An Overview,” Trends in Amplification, Vol. 13, No. 3, pp. 206-214, 2009. crossref(new window)

J.H. Cho, I.Y. Park, H.G. Lim, Y.H. Yoon, K.W. Seong, E.S. Jung, et al., “Research of Fully Implantable Middle Ear Hearing Device in Korea: Current Status,” Journal of Rehabilitation Research, Vol. 10, No. 3, pp. 90-106, 2006.

R.L. Goode, M.L. Rosenbaum, and A.J. Maniglia, “The History and Development of the Implantable Hearing Aid,” Otolaryngologic Clinics of North America, Vol. 28, No. 1, pp. 1-16, 1995.

K. Kroll, I.L. Grant, and E. Javel, “The Envoy® Totally Implantable Hearing System, St. Croix Medical,” Trends in Amplification, Vol. 6, No. 2, pp. 73-80, 2002. crossref(new window)

H.A. Jenkins, J.S. Atkins, D. Horlbeck, M.E. Hoffer, B. Balough, J.V. Arigo, et al., “U.S. Phase Ⅰ Preliminary Results of Use of the Otologics MET Fully-implantable Ossicular Stimulator,” Otolaryngology–Head and Neck Surgery, Vol. 137, No. 2, pp. 206-212, 2007. crossref(new window)

J.H. Cho, Easily-installed Microphone for Implantable Hearing Aids, WIPO Patent Application 2014129785 A1, 2014.

L. Ljung, System Identification: Theory for the User, Prentice Hall Inf and System Science Series, New Jersey, 1987.

ASTM International, Standard Practice for Describing System Output of Implantable Middle Ear Hearing Devices, Designation: F2504-05, 2005.

Vibrant Soundbridge, (accessed Jan., 04, 2016).

D.W. Kim, A Low Power and Subminiature Processor for Fully Implantable Middle Ear Hearing Device Using Successive-FFT Based Wide Dynamic Range Compression, Doctor's Thesis of Kyungpook National University, 2014.