摘要
将MFCC特征参数应用于舰船辐射噪声特征提取 ,从理论上分析了MFCC特征参数表示水声信号的有效性。通过实验选择了Mel滤波器个数和MFCC阶数 ,并用AR特征参数与MFCC特征参数作了比较 ,实验结果证明 ,基于MFCC的特征参数对新目标的识别率以及抗加性噪声的性能要优于AR特征参数。
MFCC feature coefficients was applied to feature analysis of ship-radiated noise. Theoretical analysis showed that MFCC feature represents underwater acoustic signal effective. Number of filter and order of MFCC were decided by experimenting. Compared with AR feature coefficients,the experiment results showed that MFCC feature coefficients have higher recognition rates for new underwater acoustic target and in additive noise.
出处
《舰船科学技术》
北大核心
2004年第2期51-54,共4页
Ship Science and Technology
关键词
MFCC
特征提取
最近邻法
水声信号处理
Mel frequency cepstrum coefficents
feature extraction
nearest neighbor system
underwater acoustic signal processing
