习题3

1.周期信号画出单边幅度谱和相位谱；出双边幅度谱和相位谱。2.3.已知信号f(t)波形如下，其频谱密度为F(jω)，不必求出F(jω)的达式，试计算下列值：4.5.6.已知双Sa信号试求其频谱7.求图示函数的傅里叶变换。8.已知信号求该信号的傅里叶变换。9.�EMBEDEquation.3����EMBEDEquation.3����EMBEDVisio.Drawing.5����EMBEDVisio.Drawing.5����EMBEDEquation.3����EMBEDEquation.3����EMBEDEquation.3����EMBEDEquation.3����EMBEDEquation.3����EMBEDVisio.Drawing.5����EMBEDEquation.3����EMBEDEquation.3���_1182360325.vsd_1182360439.unknown_1182360595.vsd_1182360669.unknown_1182360734.unknown_1182360505.unknown_1182360352.unknown_1182360399.unknown_1182360339.unknown_1182360022.unknown_1182360060.vsd_1182359922.unknown