• 2021-04-14
    已知抽样信号,对其进行采样,要使采样后的信号频谱不发生混叠现象,采样频率应为https://image.zhihuishu.com/zhs/onlineexam/ueditor/201912/a8e5a884bb1a476d8612b47d5be753d0.png