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子带特征参数在家禽应激发声识别中的应

, PP. 143-146

Keywords: 家禽,应激发声,特征提取,子带梅尔频谱质心

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Abstract:

基于子带梅尔频谱质心的优化特征参数(SMSC),研究了35日龄海兰褐蛋鸡在正常状态、光照与人为干扰等应激下发声信息的变化特征,并通过建立支持向量机模型(SVM),比较了采用优化特征参数与梅尔频标倒谱系数及其一阶、二阶导数组成的特征参数(MFCC_39)在识别不同应激中的应用效果。试验结果表明,采用加入梅尔频谱质心修正的特征参数,在分类正确识别率方面平均提高了

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