任务有两个:用db系列小波分析节律; 谐波小波变换,计算FBER曲线
http://wenku.baidu.com/link?url=h2SSjsGdSxFav9aagwFnUeMd7asMco0BP0Fvbo-iq3Q9ejhYtcgSTTqo-KrLam-m2CuNzgqkTxzhvLbVsj2I2TEOw6t85E6cnlr1itU_GXq