Wideband Adaptive Beamforming Using Adjustable Focusing Method for Speech Enhancement

CHEN Peng; LI Yangyang; GAO Jingjie; WANG Wei

doi:10.7652/xjtuxb202211015

您当前的位置：

首页 >

文章列表页 >

Wideband Adaptive Beamforming Using Adjustable Focusing Method for Speech Enhancement

更新时间：2025-07-09

- Wideband Adaptive Beamforming Using Adjustable Focusing Method for Speech Enhancement
- Vol. 56, Issue 11, Pages: 148-155(2022)
- 作者机构：
  
  长安大学信息工程学院,西安,710064
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb202211015
  CLC： TN912.35
- Online First：10 November 2022，
  
  Published：2022
- 稿件说明：
移动端阅览
CHEN Peng, LI Yangyang, GAO Jingjie, et al. Wideband Adaptive Beamforming Using Adjustable Focusing Method for Speech Enhancement[J]. 2022, 56(11): 148-155.
DOI：

CHEN Peng, LI Yangyang, GAO Jingjie, et al. Wideband Adaptive Beamforming Using Adjustable Focusing Method for Speech Enhancement[J]. 2022, 56(11): 148-155. DOI： 10.7652/xjtuxb202211015.

摘要

针对语音信号相对带宽大、麦克风存在误差以及现有自适应波束形成方法宽带干扰抑制能力不足的问题

提出一种面向语音增强的聚焦自适应波束形成方法。首先将Capon空间谱处理为接收信号的概率密度函数

并对不同频带设计了基于阵列观测数据的聚焦矩阵

从而根据干扰功率自动调整频率聚焦程度; 然后

计算聚焦后的样本协方差矩阵和各子带频段内的干扰加噪声协方差矩阵

并利用聚焦矩阵重构出宽带数据的干扰加噪声协方差矩阵; 最终

通过重构出参考频率下的期望信号协方差矩阵

修正期望信号方向的导向矢量并得到自适应波束形成器的加权向量。数值仿真结果表明:所提方法能够有效地对期望信号进行接收的同时充分抑制宽带干扰; 所提方法在强干扰处的聚焦误差仅为现有方法的约1%; 在信噪比为15 dB且入射角误差为3°的情况下

所提方法的输出信噪比较现有方法提高约12 dB。

Abstract

This paper proposes an adjustable focusing method for adaptive beamforming to address the problems of large relative bandwidth of speech signals

errors in microphones and insufficient broadband interference suppression with existing adaptive beamforming methods. Firstly

the Capon spectrum is processed as the probability density function of the received signals

and the focusing matrix based on the array observation data is designed for different frequency bands

so as to automatically adjust the frequency focusing degree according to the interference power; then

the focused sample covariance matrix(SCM)and the interference-plus-noise covariance matrix(INCM)in each frequency band are obtained

and the INCM of the broadband data is reconstructed by using the focusing matrix; finally

the desired signal covariance matrix(DSCM)at the reference frequency is reconstructed

the steering vector(SV)is corrected and the weighting vector of the proposed beamformer is obtained. According to the results of several numerical simulations

the proposed method allow the desired signals to be effectively received and the wideband interference sufficiently suppressed; the focusing error of the proposed method under strong interference is only about 1% that of the existing methods; when all signals have an incident angle error of 3° and the signal-to-noise ratio(SNR)is 15 dB

the output signal-to-interference-and-noise-ratio(SINR)of the proposed method is about 12 dB higher than the existing methods.

关键词

Keywords

references

霍广. 近场宽带波束形成算法研究 [D]. 哈尔滨: 哈尔滨工程大学, 2015.

WANG Yong, YANG Yixin, HE Zhengyao, et al. Robust superdirective frequency-invariant beamforming for circular sensor arrays [J]. IEEE Signal Processing Letters, 2017, 24(8): 1193-1197.

YAN Shefeng. Optimal design of FIR beamformer with frequency invariant patterns [J]. Applied Acoustics, 2006, 67(6): 511-528.

GODARA L C. Application of the fast Fourier transform to broadband beamforming [J]. The Journal of the Acoustical Society of America, 1995, 98(1): 230-240.

CHEN Peng, YANG Yixin, WANG Yong, et al. Robust covariance matrix reconstruction algorithm for time-domain wideband adaptive beamforming [J]. IEEE Transactions on Vehicular Technology, 2019, 68(2): 1405-1416.

范展, 梁国龙. 基于凸优化的最小旁瓣恒定束宽时域宽带波束形成 [J]. 电子学报, 2013, 41(5): 943-948.

FAN Zhan, LIANG Guolong. Broadband beamforming with minimum sidelobe and constant beamwidth based on convex optimization [J]. Acta Electronica Sinica, 2013, 41(5): 943-948.

YANG Yixin, YANG Long, ZHU Jiannan. Sidelobe suppression for time-domain adaptive broadband beamforming with sparse constraint [C]∥OCEANS 2016 MTS/IEEE Monterey. Piscataway, NJ, USA: IEEE, 2016: 1-4.

ZHAO Yong, LIU Wei, LANGLEY R J. Subband design of fixed wideband beamformers based on the least squares approach [J]. Signal Processing, 2011, 91(4): 1060-1065.

SOMASUNDARAM S D. Wideband robust capon beamforming for passive sonar [J]. IEEE Journal of Oceanic Engineering, 2013, 38(2): 308-322.

HUNG H, KAVEH M. Focussing matrices for coherent signal-subspace processing [J]. IEEE Transactions on Acoustics, Speech, and Signal Processing, 1988, 36(8): 1272-1281.

LIU Yanhui, ZHANG Liang, YE Longfang, et al. Synthesis of sparse arrays with frequency-invariant-focused beam patterns under accurate sidelobe control by iterative second-order cone programming [J]. IEEE Transactions on Antennas and Propagation, 2015, 63(12): 5826-5832.

VALAEE S, KABAL P. Wideband array processing using a two-sided correlation transformation [J]. IEEE Transactions on Signal Processing, 1995, 43(1): 160-172.

HUNG H S, MAO C Y. Robust coherent signal-subspace processing for directions-of-arrival estimation of wideband sources [J]. IEE Proceedings: Radar, Sonar and Navigation, 1994, 141(5): 256-262.

BUCRIS Y, COHEN I, DORON M A. Bayesian focusing for coherent wideband beamforming [J]. IEEE Transactions on Audio, Speech, and Language Processing, 2012, 20(4): 1282-1296.

陈亮, 盛卫星, 韩玉兵, 等. 改进贝叶斯聚焦的宽带自适应单脉冲算法 [J]. 电波科学学报, 2013, 28(2): 237-248.

CHEN Liang, SHENG Weixing, HAN Yubing, et al. Wideband adaptive monopulse algorithm based on improved Bayesian focusing [J]. Chinese Journal of Radio Science, 2013, 28(2): 237-248.

CAPON J. High-resolution frequency-wavenumber spectrum analysis [J]. Proceedings of the IEEE, 1969, 57(8): 1408-1418.

夏麾军, 马远良, 汪勇, 等. 高增益对角减载波束形成方法研究 [J]. 声学学报, 2016, 41(4): 449-455.

XIA Huijun, MA Yuanliang, WANG Yong, et al. Study of high-gain beamforming using diagonal reducing [J]. Acta Acustica, 2016, 41(4): 449-455.

GU Yujie, LESHEM A. Robust adaptive beamforming based on interference covariance matrix reconstruction and steering vector estimation [J]. IEEE Transactions on Signal Processing, 2012, 60(7): 3881-3885.

MALLIPEDDI R, LIE J P, RAZUL S G, et al. Robust adaptive beamforming based on covariance matrix reconstruction for look direction mismatch [J]. Progress In Electromagnetics Research Letters, 2011, 25: 37-46.

吴仁斌, 姚敏立, 贾维敏, 等. 采用幅度响应约束的鲁棒自适应波束形成算法 [J]. 西安交通大学学报, 2014, 48(4): 109-114.

WU Renbin, YAO Minli, JIA Weimin, et al. Robust adaptive beamforming algorithm by constraints on magnitude response [J]. Journal of Xi'an Jiaotong University, 2014, 48(4): 109-114.

范展, 梁国龙. 基于干扰协方差矩阵重构的恒定束宽鲁棒自适应波束形成 [J]. 声学学报, 2015, 40(1): 104-109.

FAN Zhan, LIANG Guolong. Frequency-invariant robust adaptive beamforming based on interference covariance matrix reconstruction [J]. Acta Acustica, 2015, 40(1): 104-109.

CHEN Peng, ZUO Long, WANG Wei. Adaptive beamforming for passive synthetic aperture with uncertain curvilinear trajectory [J]. Remote Sensing, 2021, 13(13): 2562.

CHEN Peng, GAO Jingjie, WANG Wei. Linear prediction-based covariance matrix reconstruction for robust adaptive beamforming [J]. IEEE Signal Processing Letters, 2021, 28: 1848-1852.

CHEN Peng, YANG Yixin. An uncertainty-set-shrinkage-based covariance matrix reconstruction algorithm for robust adaptive beamforming [J]. Multidimensional Systems and Signal Processing, 2021, 32(1): 263-279.

ZHU Xingyu, YE Zhongfu, XU Xu, et al. Covariance matrix reconstruction via residual noise elimination and interference powers estimation for robust adaptive beamforming [J]. IEEE Access, 2019, 7: 53262-53272.

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

A Short-Time Spectrum Estimation Algorithm of Speech Enhancement under the Distortion Control

Sensitivity Analysis of Foil Geometrical Parameters for the Third-Generation CO2 Gas Foil Bearings Based on Design of Experiments Method

Mechanism and Optimal Control Strategy for Hysteresis in Rapid Dehumidification Response of Indirect Thermal Systems in Electric Vehicles

Bi-Level Multi-Obj ective Optimization of a Wind-Solar Coupled Hydrogen Production System Based on the Synergy of Hybrid Electrolyzer Arrays

Effects of Expansion Angle Crater Film Hole on the Film Cooling Characteristics of a Double-Wall Structure

Related Author

刘晓明

班超帆

冯晓荣

Related Institution

College of Communication Engineering, Chongqing University

⁰