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Robust Nearfield Wideband Beamforming Design Based on Adaptive-Weighted Convex Optimization
المؤلفون المشاركون
Guo, Yecai
Chao, Wang
Ning, Zhang
المصدر
Mathematical Problems in Engineering
العدد
المجلد 2017، العدد 2017 (31 ديسمبر/كانون الأول 2017)، ص ص. 1-10، 10ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2017-08-30
دولة النشر
مصر
عدد الصفحات
10
التخصصات الرئيسية
الملخص EN
Nearfield wideband beamformers for microphone arrays have wide applications in multichannel speech enhancement.
The nearfield wideband beamformer design based on convex optimization is one of the typical representatives of robust approaches.
However, in this approach, the coefficient of convex optimization is a constant, which has not used all the freedom provided by the weighting coefficient efficiently.
Therefore, it is still necessary to further improve the performance.
To solve this problem, we developed a robust nearfield wideband beamformer design approach based on adaptive-weighted convex optimization.
The proposed approach defines an adaptive-weighted function by the adaptive array signal processing theory and adjusts its value flexibly, which has improved the beamforming performance.
During each process of the adaptive updating of the weighting function, the convex optimization problem can be formulated as a SOCP (Second-Order Cone Program) problem, which could be solved efficiently using the well-established interior-point methods.
This method is suitable for the case where the sound source is in the nearfield range, can work well in the presence of microphone mismatches, and is applicable to arbitrary array geometries.
Several design examples are presented to verify the effectiveness of the proposed approach and the correctness of the theoretical analysis.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Guo, Yecai& Chao, Wang& Ning, Zhang. 2017. Robust Nearfield Wideband Beamforming Design Based on Adaptive-Weighted Convex Optimization. Mathematical Problems in Engineering،Vol. 2017, no. 2017, pp.1-10.
https://search.emarefa.net/detail/BIM-1190632
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Guo, Yecai…[et al.]. Robust Nearfield Wideband Beamforming Design Based on Adaptive-Weighted Convex Optimization. Mathematical Problems in Engineering No. 2017 (2017), pp.1-10.
https://search.emarefa.net/detail/BIM-1190632
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Guo, Yecai& Chao, Wang& Ning, Zhang. Robust Nearfield Wideband Beamforming Design Based on Adaptive-Weighted Convex Optimization. Mathematical Problems in Engineering. 2017. Vol. 2017, no. 2017, pp.1-10.
https://search.emarefa.net/detail/BIM-1190632
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1190632
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
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