Abstract
This research evaluates four state-of-the-art acoustic feedback cancellation systems in hearing aids in terms of the cancellation performance, sound quality degradation, and computational complexity. The authors compared a traditional full-band system to a system with a prediction error method in a full band, a subband system, a subband system with frequency shifting, and a recently proposed subband system with a novel probe noise deployment. All systems outperformed the traditional full-band system in cancellation performance, especially the subband system with probe noise is most effective for cancellation. However, in all cases there was a trade-off between performance and computational cost. With a 3-times increase in computation load, the probe noise based cancellation system can be realized that functions even in the most challenging feedback situation.
Originalsprog | Engelsk |
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Tidsskrift | Journal of the Audio Engineering Society |
Vol/bind | 61 |
Udgave nummer | 3 |
Sider (fra-til) | 125-137 |
Antal sider | 13 |
ISSN | 1549-4950 |
Status | Udgivet - 9 apr. 2013 |