A Combined Acoustic Feedback and Noise Cancellation Algorithm for Digital Hearing Aids 


Vol. 35,  No. 11, pp. 911-916, Nov.  2010


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  Abstract

This paper proposes a new algorithm to cancel the acoustic feedback and noise signals in digital hearing aids. The proposed algorithm combines the feedback canceller to remove acoustic feedback signals and the noise canceller to reduce background noises. The feedback canceller is implemented by normal adaptive FIR filter, and the noise canceller is implemented by using the Wiener solution in frequency domain. This noise canceller has the transfer function presented by the power spectral density of signals. To verify the performances of the proposed algorithm, the simulations were carried out for the system. As the results of simulations, it was proved that we can advance 10.85㏈ output SNR on the average for the forward path gain of 0㏈, and 11.04㏈ output SNR on the average for the forward path gain of 6㏈, in the case of using the proposed algorithm.

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  Cite this article

[IEEE Style]

H. Lee, "A Combined Acoustic Feedback and Noise Cancellation Algorithm for Digital Hearing Aids," The Journal of Korean Institute of Communications and Information Sciences, vol. 35, no. 11, pp. 911-916, 2010. DOI: .

[ACM Style]

Haeng-Woo Lee. 2010. A Combined Acoustic Feedback and Noise Cancellation Algorithm for Digital Hearing Aids. The Journal of Korean Institute of Communications and Information Sciences, 35, 11, (2010), 911-916. DOI: .

[KICS Style]

Haeng-Woo Lee, "A Combined Acoustic Feedback and Noise Cancellation Algorithm for Digital Hearing Aids," The Journal of Korean Institute of Communications and Information Sciences, vol. 35, no. 11, pp. 911-916, 11. 2010.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880