demon
代码说明：
对实际采集的舰船辐射噪声进行了demo谱分析，分别采用了窄带解调和宽带解调两种方式，得到了较清晰的轴频和叶频信息。(use narrow-band and broad-band methods to demodulate the ship-radiated noise which is actually colleted, there can see clear axle frequency and blade frequency in the demo spectrum.)
文件列表：
bandpass.mat,1500,2012-03-30
bandpass1.mat,1491,2012-03-29
bandpass2.mat,1492,2012-03-29
bandpass3.mat,1495,2012-03-29
bandpass4.mat,1489,2012-03-29
bandpass5.mat,1493,2012-03-29
bandpass6.mat,1492,2012-03-29
bandpass7.mat,1495,2012-03-29
bandpass8.mat,1493,2012-03-29
kuadaijietiao.m,1046,2012-03-30
lowpass.mat,1493,2012-03-29
testch1.bin,3840000,2012-03-15
zhaidaijietiao.m,1323,2012-03-30
简单说明.doc,30208,2012-03-30
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