求助数字信号处理基础问题——抽样定理应用有一调幅信号 Xa(t)=[1+cos(2*pi*100t)]cos(2*pi*600)用DFT做频谱分析,要求能分辨Xa(t)的所有频率分量,问(1)抽样频率应为多少赫兹?(2)抽样时间间隔应为多少
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/19 22:30:09
![求助数字信号处理基础问题——抽样定理应用有一调幅信号 Xa(t)=[1+cos(2*pi*100t)]cos(2*pi*600)用DFT做频谱分析,要求能分辨Xa(t)的所有频率分量,问(1)抽样频率应为多少赫兹?(2)抽样时间间隔应为多少](/uploads/image/z/11403571-67-1.jpg?t=%E6%B1%82%E5%8A%A9%E6%95%B0%E5%AD%97%E4%BF%A1%E5%8F%B7%E5%A4%84%E7%90%86%E5%9F%BA%E7%A1%80%E9%97%AE%E9%A2%98%E2%80%94%E2%80%94%E6%8A%BD%E6%A0%B7%E5%AE%9A%E7%90%86%E5%BA%94%E7%94%A8%E6%9C%89%E4%B8%80%E8%B0%83%E5%B9%85%E4%BF%A1%E5%8F%B7+Xa%28t%29%3D%5B1%2Bcos%282%2Api%2A100t%29%5Dcos%282%2Api%2A600%29%E7%94%A8DFT%E5%81%9A%E9%A2%91%E8%B0%B1%E5%88%86%E6%9E%90%2C%E8%A6%81%E6%B1%82%E8%83%BD%E5%88%86%E8%BE%A8Xa%28t%29%E7%9A%84%E6%89%80%E6%9C%89%E9%A2%91%E7%8E%87%E5%88%86%E9%87%8F%2C%E9%97%AE%281%29%E6%8A%BD%E6%A0%B7%E9%A2%91%E7%8E%87%E5%BA%94%E4%B8%BA%E5%A4%9A%E5%B0%91%E8%B5%AB%E5%85%B9%3F%282%29%E6%8A%BD%E6%A0%B7%E6%97%B6%E9%97%B4%E9%97%B4%E9%9A%94%E5%BA%94%E4%B8%BA%E5%A4%9A%E5%B0%91)
xS;oP+vĐ!$VHU@Jt:i'-imȑ҇8<MAOuХ{;J<͏OvquC-SÛW`\eCXی|z(q₰"画/ߖufFq@E>~;IjC'`n\OJĩ:$:db}GW"r?i""?DLՂG"}XӸ܋_$nO)T6iLeRHz«r~UiRp}EtSh(,y\QX 0 _l҆H&