A Stereo Wind-Noise Suppressor with Null Beamforming and Frequency-Domain Noise Averaging
This paper proposes a stereo wind-noise suppressor with frequency-domain noise averaging. A directional gain for diffuse wind noise is estimated frame by frame using a null beamformer based on interchannel phase difference which blocks the target signal. The wind-noise gain estimate is commonly mult...
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| Veröffentlicht in: | IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences Communications and Computer Sciences, 2018/10/01, Vol.E101.A(10), pp.1631-1637 |
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| container_title | IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences |
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| creator | KATO, Masanori SUGIYAMA, Akihiko KOMATSU, Tatsuya |
| description | This paper proposes a stereo wind-noise suppressor with frequency-domain noise averaging. A directional gain for diffuse wind noise is estimated frame by frame using a null beamformer based on interchannel phase difference which blocks the target signal. The wind-noise gain estimate is commonly multiplied by the input noisy signal to generate channel dependent wind noise estimates in order to cope with interchannel wind-noise imbalance. Interchannel phase agreement by target signal dominance or incidentally equal wind-noise phase, which leads to underestimation, is offset by averaging channel dependent wind-noise estimates along frequency. Evaluation results show that the mean PESQ score by the proposed wind-noise suppressor reaches 2.1 which is 0.2 higher than that by the wind-noise suppressor without averaging and 0.3 higher than that by a conventional monaural-noise suppressor with a statistically significant difference. |
| doi_str_mv | 10.1587/transfun.E101.A.1631 |
| format | Article |
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Fundamentals</addtitle><date>2018-10-01</date><risdate>2018</risdate><volume>E101.A</volume><issue>10</issue><spage>1631</spage><epage>1637</epage><pages>1631-1637</pages><issn>0916-8508</issn><eissn>1745-1337</eissn><abstract>This paper proposes a stereo wind-noise suppressor with frequency-domain noise averaging. A directional gain for diffuse wind noise is estimated frame by frame using a null beamformer based on interchannel phase difference which blocks the target signal. The wind-noise gain estimate is commonly multiplied by the input noisy signal to generate channel dependent wind noise estimates in order to cope with interchannel wind-noise imbalance. Interchannel phase agreement by target signal dominance or incidentally equal wind-noise phase, which leads to underestimation, is offset by averaging channel dependent wind-noise estimates along frequency. 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| ispartof | IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, 2018/10/01, Vol.E101.A(10), pp.1631-1637 |
| issn | 0916-8508 1745-1337 |
| language | eng |
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| source | J-STAGE Free |
| subjects | Beamforming Frequency domain analysis frequency-domain averaging Hard rock music Noise Noise generation Noise reduction noise suppressor null beamforming stereo wind noise |
| title | A Stereo Wind-Noise Suppressor with Null Beamforming and Frequency-Domain Noise Averaging |
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