A Stereo Wind-Noise Suppressor with Null Beamforming and Frequency-Domain Noise Averaging
Summary :
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.
- Publication
- IEICE TRANSACTIONS on Fundamentals Vol.E101-A No.10 pp.1631-1637
- Publication Date
- 2018/10/01
- Publicized
- Online ISSN
- 1745-1337
- DOI
- 10.1587/transfun.E101.A.1631
- Type of Manuscript
- PAPER
- Category
- Digital Signal Processing
Authors
Masanori KATO
NEC Corporation
Akihiko SUGIYAMA
NEC Corporation,Tokyo Metropolitan University
Tatsuya KOMATSU
NEC Corporation
Keyword
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Masanori KATO, Akihiko SUGIYAMA, Tatsuya KOMATSU, "A Stereo Wind-Noise Suppressor with Null Beamforming and Frequency-Domain Noise Averaging" in IEICE TRANSACTIONS on Fundamentals,
vol. E101-A, no. 10, pp. 1631-1637, October 2018, doi: 10.1587/transfun.E101.A.1631.
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. 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.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/transfun.E101.A.1631/_p
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@ARTICLE{e101-a_10_1631,
author={Masanori KATO, Akihiko SUGIYAMA, Tatsuya KOMATSU, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={A Stereo Wind-Noise Suppressor with Null Beamforming and Frequency-Domain Noise Averaging},
year={2018},
volume={E101-A},
number={10},
pages={1631-1637},
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. 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.},
keywords={},
doi={10.1587/transfun.E101.A.1631},
ISSN={1745-1337},
month={October},}
Copy
TY - JOUR
TI - A Stereo Wind-Noise Suppressor with Null Beamforming and Frequency-Domain Noise Averaging
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 1631
EP - 1637
AU - Masanori KATO
AU - Akihiko SUGIYAMA
AU - Tatsuya KOMATSU
PY - 2018
DO - 10.1587/transfun.E101.A.1631
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E101-A
IS - 10
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - October 2018
AB - 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.
ER -
English
