基于MATLAB鸟叫声特征提取方法的研究

Study on the Method of Feature Extraction of Birds Singing Based on MATLAB

脊椎动物中最重要的生物类群之一的鸟类不仅在维持和保护生态平衡和生物防治等多方面起着十分重要的作用,而且对人类来说鸟类在很多方面还具有极高的经济价值。鸟叫声作为研究鸟类的生物学最重要的特征之一,因此主要采用MATLAB2010a对鸟类的叫声进行相应的特征提取并对其进行仿真,主要包括对鸟叫声的预处理、线性预测分析(LPC)、美尔频率倒谱系数(MFCC),并用MATLAB2010a设计一款软件实现对鸟叫声的特征提取。

Birds are one of the most important biological groups among the vertebrates, which not only play a very important role in maintaining the ecological balance and biological control, but also have a high economic value for human beings. Bird singing is one of the most important biological features while studying birds. In this paper, the features of birds singing were extracted and simulated by MATLAB2010a, including the pretreatment of birds singing, linear prediction analysis, and Mel frequency Cepstrum coefficients （MFCC）. A software was designed using Matlab 2010a to implement the extraction of the characteristics of birds singing.