New Insights into Optimal Acoustic Feedback Cancellation
In this letter, we present new insights into the bias problem for acoustic feedback cancellation when a probe signal approach is used. The optimum solution of the feedback canceler is not the feedback path but the product of the feedback path and the sensitivity function and hence, the solution is b...
| Main Authors: | , , |
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| Format: | Journal Article |
| Published: |
IEEE Signal Processing Society
2013
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| Online Access: | http://hdl.handle.net/20.500.11937/18543 |
| _version_ | 1848749773852508160 |
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| author | Nakagawa, C. Renato C. Nordholm, Sven Yan, Wei-Yong |
| author_facet | Nakagawa, C. Renato C. Nordholm, Sven Yan, Wei-Yong |
| author_sort | Nakagawa, C. Renato C. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | In this letter, we present new insights into the bias problem for acoustic feedback cancellation when a probe signal approach is used. The optimum solution of the feedback canceler is not the feedback path but the product of the feedback path and the sensitivity function and hence, the solution is biased. The novelty of this paper also consists of the derivation of the conditions for unbiased feedback cancellation when a probe signal is used as input to the canceler. An adequate delay in the forward path is necessary to reduce, or remove the bias term. The theoretical analysis is verified with simulation results. |
| first_indexed | 2025-11-14T07:26:16Z |
| format | Journal Article |
| id | curtin-20.500.11937-18543 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:26:16Z |
| publishDate | 2013 |
| publisher | IEEE Signal Processing Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-185432017-09-13T13:46:48Z New Insights into Optimal Acoustic Feedback Cancellation Nakagawa, C. Renato C. Nordholm, Sven Yan, Wei-Yong hearing aids feedback cancellation probe injection bias problem Acoustic feedback In this letter, we present new insights into the bias problem for acoustic feedback cancellation when a probe signal approach is used. The optimum solution of the feedback canceler is not the feedback path but the product of the feedback path and the sensitivity function and hence, the solution is biased. The novelty of this paper also consists of the derivation of the conditions for unbiased feedback cancellation when a probe signal is used as input to the canceler. An adequate delay in the forward path is necessary to reduce, or remove the bias term. The theoretical analysis is verified with simulation results. 2013 Journal Article http://hdl.handle.net/20.500.11937/18543 10.1109/LSP.2013.2271318 IEEE Signal Processing Society fulltext |
| spellingShingle | hearing aids feedback cancellation probe injection bias problem Acoustic feedback Nakagawa, C. Renato C. Nordholm, Sven Yan, Wei-Yong New Insights into Optimal Acoustic Feedback Cancellation |
| title | New Insights into Optimal Acoustic Feedback Cancellation |
| title_full | New Insights into Optimal Acoustic Feedback Cancellation |
| title_fullStr | New Insights into Optimal Acoustic Feedback Cancellation |
| title_full_unstemmed | New Insights into Optimal Acoustic Feedback Cancellation |
| title_short | New Insights into Optimal Acoustic Feedback Cancellation |
| title_sort | new insights into optimal acoustic feedback cancellation |
| topic | hearing aids feedback cancellation probe injection bias problem Acoustic feedback |
| url | http://hdl.handle.net/20.500.11937/18543 |