摘要
针对由两个微型麦克风阵列组成的双微阵列,提出一种改进GSC结构的双微阵列语音增强算法,通过在广义旁瓣抵消器的前端加一个基于迭代噪声功率谱估计的谱修正滤波器,在广义旁瓣抵消器的输出端使用调制域谱减法,对仍有噪声残留的含噪语音进行增强处理。实验结果表明,该算法在抑制背景噪声方面优于现有广义旁瓣抵消器算法,在语音质量方面得到了一定提升,为双微阵列语音增强算法更好应用于手机、助听器及人工耳蜗等方面提供了途径。
Aiming at the array consisting of two mini-typed microphone arrays,a speech enhancement algorithm was presented to modify the generalized sidelobes canceller.A modified spectrum filter based on iterative noise power spectrum estimation in the front was used to process before the generalized sidelobes canceller,and at the output of the generalized sidelobe canceller,filtering modulation domain spectral subtraction was used to enhance noisy speech with noise residual.Experimental results show that the proposed algorithm can suppress the background noise.The algorithm is better than the existing generalized sidelobe canceller algorithm,and also improve speech quality,which provides a method for dual-mini microphone array speech enhancement algorithm to be better applied to the mobile phone,hearing aids and cochlear implants.
作者
毛维
曾庆宁
龙超
MAO Wei, ZENG Qing -ning, LONG Chao(School of information and Communication, Guilin University of Electronic Technology, Guilin 541004, Chin)
出处
《计算机工程与设计》
北大核心
2018年第8期2490-2494,共5页
Computer Engineering and Design
基金
国家自然科学基金项目(61461011)
"认知无线电与信息处理"教育部重点实验室2016年主任基金项目(CRKL160107)
广西自然科学基金项目(2014GXNSFBA118273)
桂林电子科技大学研究生科研创新基金项目(2017YJCX16
2017YJCX20)
关键词
双微阵列
广义旁瓣抵消器
谱修正滤波器
调制域谱减法
语音质量
dual-mini microphone array
GSC
modified spectrum filter
modulation domain spectral substraction
speech quality
