一种结合短时过零率的快速语音端点检测算法  

A Fast Algorithm of Speech End-Point Detection Combined with Short-Time Zero Crossing Rate

作　　者：蔡萍[1] 

机构地区：[1]闽江学院物理学与电子信息工程系,福建福州350108

出　　处：《厦门理工学院学报》2013年第2期48-51,共4页Journal of Xiamen University of Technology

摘　　要：针对传统的频带方差检测算法运算量较大的问题,提出一种结合短时过零率的快速算法.该算法通过将平方运算转换为求绝对值运算,减小了计算量;绝对值运算相当于在相邻帧之间进行"谱减",有效地抑制了白噪声的干扰,在低信噪比条件下显示出其优越性.In order to solve the problem of big computation efforts of traditional spectral variance method, this paper puts forward a new algorithm combined with short time zero crossing rate. By converting square calculation to ABS function, this approach reduces calculation amount. Meanwhile, ABS function suppresses the interference of white noise effectively as it is equivalent to spectral subtraction between adjacent frames. This algorithm is superior to others in condition of low SNR.

关 键 词：检测算法 语音信号 端点检测 频带方差 短时过零率 

分 类 号：TN912.3[电子电信—通信与信息系统]