Contactless hearing aid designed for infants

• Autorzy: Kulesza M. , Kostek B. , Dalka P. , Czyżewski A.
• Języki publikacji: EN

Abstrakty

EN

It is a well known fact that language development through home intervention for a hearing-impaired infant should start in the early months of a newborn baby's life. The aim of this paper is to present a concept of a contactless digital hearing aid designed especially for infants. In contrast to all typical wearable hearing aid solutions (ITC, ITE, BTE), the proposed device is mounted in the infant's bed with any parts of its set-up contacting the infant's body. A processed speech signal is emitted by low-power loudspeakers placed near the infant's head. The hearing aid architecture employs a digital signal processor based on Texas Instruments technology. Since one of the main problems is the acoustic feedback between the microphone and the loudspeakers, the methods of its elimination are also briefly reviewed in this article. The first of the discussed methods employs an adaptive algorithm, the second alters the frequency response of the entire instrumentation through the use of notch filter banks, and the third incorporates a microphone array and beam-forming techniques. The paper also includes descriptions of some algorithmic solutions engineered by the authors in purpose to eliminate acoustic feedbacks. All the conclusions introduced in this article have been derived based on the simulations of an experimental contactless hearing aid set-up.

Słowa kluczowe

EN

hearing aids; digital signal processors; acoustic feedback elimination

• Wydawca: Instytut Podstawowych Problemów Techniki PAN ; Komitet Akustyki PAN ; Polskie Towarzystwo Akustyczne
• Czasopismo: Archives of Acoustics
• Rocznik: 2006
• Tom: Vol. 31, No. 4
• Strony: 431--437
• Opis fizyczny: Bibliogr. 14 poz.

Twórcy

autor

Kulesza M.

autor

Kostek B.

autor

Dalka P.

autor

Czyżewski A.

• Gdańsk University of Technology, Multimedia Systems Department Narutowicza 11/12, 80-952 Gdańsk, Poland,

Bibliografia

• [1] CHEN J. C., YAO K., HUDSON R. E., Acoustic source localization and beamforming: theory and practice, EURASIP Journal on Applied Processing, No. 4, 359.370, Hindawi Publishing Corporation, 2003.
• [2] CZYŻEWSKI A., Automatic identification of sound source position employing neural networks and rough sets, Pattern Recognition Letters, 24, 921.933, 2003.
• [3] CZYŻEWSKI A., KOSTEK B., SKARŻYŃSKI H., Applications of computer technology to audiology and speech theraphy [in Polish], EXIT Academic Press, 2002.
• [4] CZYŻEWSKI A., LASECKI J., Neural network-based spatial filtration algorithm for a 2-D microphone array, Acta Acustica . Proc. Forum Acusticum '99, Berlin, March 14.19, Abstract book, Hirzel Verlag, 4aSP7, 326, 1999.
• [5] FILLON T., PRADO J., Acoustic feedback cancellation for hearing-aids, using multi-delay filter, 5th Nordic Signal Processing Symposium, October 4.7, Hurtigruten, Norway, 2002.
• [6] KOSTEK B., Perception-based data processing in acoustics. Applications to music information retrieval and psychophysiology of hearing, Springer Verlag Series on Cognitive Technologies, Berlin, Heidelberg, New York 2005.
• [7] KOSTEK B., CZYŻEWSKI A., LASECKI J., Spatial filtration of sound for multimedia systems, [in:] Proc. IEEE Signal Processing Society 3rd Workshop on Multimedia Signal Processing, pp. 209.213, Copenhagen, Denmark 1999.
• [8] KULESZA M., DALKA P., KOSTEK B., Contactless hearing aid for infants employing signal processing algorithms, [in:] Preprint 121st AES Convention, 5.8 October, San Francisco, USA 2006.
• [9] MAXWELL J. A., ZUREK P.M., Reducing acoustic feedback in hearing aids, IEEE Transactions on Speech and Audio Processing, 3, 4 (1995).
• [10] NISHIMURA S., KIM J. K., HIRANO K., Mean-squared error analysis of an adaptive notch filter, IEEE Int. Symp. on Circ. and Syst., 732.735, vol. 1, 8.11 May, 1989.
• [11] SPRIET A., PROUDLER I., MOONEN M., WOUTERS J., An instrumental variable method for adaptive feedback cancellation in hearing aids, IEEE Int. Conf. on Acoustics, Speech, and Signal Proc., vol. 3, iii/129-iii/132, 18.23, March, 2005.
• [12] TMS320VC5503 fixed-point digital signal processor, Texas Instruments, 2005.
• [13] YANTORNO R. E., KRISHNAMACHARI K. R., LOVEKIN J.M., BENINCASA D. S., WENNDT S. J., The spectral autocorrelation peak valley ratio (SAPVR) . a useable speech measure employed as a co-channel detection system, IEEE Workshop on Intelligent Signal Processing, 193.197, Hungary, May, 2001.
• [14] YONG C. L., YUE X. Z., ZHENG N., A piloted adaptive notch filter, IEEE Trans. on Signal Processing, 53, 4, 1310.1323 (2005).