湖北大学学报(自然科学版)
湖北大學學報(自然科學版)
호북대학학보(자연과학판)
2015年
2期
122-126
,共5页
麦克风小阵列%语音增强%广义旁瓣相消器%相干滤波器
麥剋風小陣列%語音增彊%廣義徬瓣相消器%相榦濾波器
맥극풍소진렬%어음증강%엄의방판상소기%상간려파기
small microphone arrays%speech enhancement%generalized sidelobe canceler%coherence filter
提出一种相干滤波器与广义旁瓣相消器结合(GSC)的二元麦克风阵列语音增强算法。将基于噪声谱估计的单通道相干滤波器作为广义旁瓣相消器的后置滤波器,充分利用阵元间蕴含的信号进行噪音抑制,克服经典结合算法无法使用基于噪声谱估计的相干滤波器的缺点。计算机仿真实验表明,该算法明显优于小阵列广义旁瓣相消算法和基于相位差的算法。
提齣一種相榦濾波器與廣義徬瓣相消器結閤(GSC)的二元麥剋風陣列語音增彊算法。將基于譟聲譜估計的單通道相榦濾波器作為廣義徬瓣相消器的後置濾波器,充分利用陣元間蘊含的信號進行譟音抑製,剋服經典結閤算法無法使用基于譟聲譜估計的相榦濾波器的缺點。計算機倣真實驗錶明,該算法明顯優于小陣列廣義徬瓣相消算法和基于相位差的算法。
제출일충상간려파기여엄의방판상소기결합(GSC)적이원맥극풍진렬어음증강산법。장기우조성보고계적단통도상간려파기작위엄의방판상소기적후치려파기,충분이용진원간온함적신호진행조음억제,극복경전결합산법무법사용기우조성보고계적상간려파기적결점。계산궤방진실험표명,해산법명현우우소진렬엄의방판상소산법화기우상위차적산법。
This paper proposed a speech enhancement method which based on the combination of generalized sidelobe canceller(GSC)and coherence filter for small microphone array.The use of single-channel coherence filter based on noise spectrum estimation as a generalized sidelobe canceller post filter ,which takes full advantage of information between array elements to suppress noise and to overcome the shortcomings of classical algorithms which can not use coherence filter that based on the noise spectrum estimation.Simulations tests showed that the proposed algorithm was superior to separate small arrayGSCalgorithms and phase difference algorithm.