Trade-off evaluation for speech enhancement algorithms with respect to the a priori SNR estimation acoustics
In this paper, a modified a priori SNR estimator is proposed for speech enhancement. The well-known decision-directed (DD) approach is modified by matching each gain function with the noisy speech spectrum at current frame rather than the previous one. The proposed algorithm eliminates the speech tr...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Conference Paper |
| Published: |
The Institute of Electrical and Electronics Engineers Signal Processing Society
2012
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| Online Access: | http://hdl.handle.net/20.500.11937/32699 |
| _version_ | 1848753735927332864 |
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| author | Yong, Pei Nordholm, Sven Dam, Hai Huyen Heidi |
| author2 | Akihiko Sugiyama |
| author_facet | Akihiko Sugiyama Yong, Pei Nordholm, Sven Dam, Hai Huyen Heidi |
| author_sort | Yong, Pei |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | In this paper, a modified a priori SNR estimator is proposed for speech enhancement. The well-known decision-directed (DD) approach is modified by matching each gain function with the noisy speech spectrum at current frame rather than the previous one. The proposed algorithm eliminates the speech transient distortion and reduces the impact from the choice of the gain function towards the level of smoothing in the SNR estimate. An objective evaluation metric is employed to measure the trade-off between musical noise, noise reduction and speech distortion. Performance is evaluated and compared between a modified sigmoid gain function, the state-of-the-art log-spectral amplitude estimator and the Wiener filter. Simulation results show that the modified DD approach performs better in terms of the trade-off evaluation. |
| first_indexed | 2025-11-14T08:29:15Z |
| format | Conference Paper |
| id | curtin-20.500.11937-32699 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:29:15Z |
| publishDate | 2012 |
| publisher | The Institute of Electrical and Electronics Engineers Signal Processing Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-326992023-02-07T08:01:19Z Trade-off evaluation for speech enhancement algorithms with respect to the a priori SNR estimation acoustics Yong, Pei Nordholm, Sven Dam, Hai Huyen Heidi Akihiko Sugiyama Hitoshi Kiya In this paper, a modified a priori SNR estimator is proposed for speech enhancement. The well-known decision-directed (DD) approach is modified by matching each gain function with the noisy speech spectrum at current frame rather than the previous one. The proposed algorithm eliminates the speech transient distortion and reduces the impact from the choice of the gain function towards the level of smoothing in the SNR estimate. An objective evaluation metric is employed to measure the trade-off between musical noise, noise reduction and speech distortion. Performance is evaluated and compared between a modified sigmoid gain function, the state-of-the-art log-spectral amplitude estimator and the Wiener filter. Simulation results show that the modified DD approach performs better in terms of the trade-off evaluation. 2012 Conference Paper http://hdl.handle.net/20.500.11937/32699 10.1109/ICASSP.2012.6288957 The Institute of Electrical and Electronics Engineers Signal Processing Society restricted |
| spellingShingle | Yong, Pei Nordholm, Sven Dam, Hai Huyen Heidi Trade-off evaluation for speech enhancement algorithms with respect to the a priori SNR estimation acoustics |
| title | Trade-off evaluation for speech enhancement algorithms with respect to the a priori SNR estimation acoustics |
| title_full | Trade-off evaluation for speech enhancement algorithms with respect to the a priori SNR estimation acoustics |
| title_fullStr | Trade-off evaluation for speech enhancement algorithms with respect to the a priori SNR estimation acoustics |
| title_full_unstemmed | Trade-off evaluation for speech enhancement algorithms with respect to the a priori SNR estimation acoustics |
| title_short | Trade-off evaluation for speech enhancement algorithms with respect to the a priori SNR estimation acoustics |
| title_sort | trade-off evaluation for speech enhancement algorithms with respect to the a priori snr estimation acoustics |
| url | http://hdl.handle.net/20.500.11937/32699 |